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Topics referred to by the same term
C2H or C2H may refer to: Ethynyl radical, an organic compound with the chemical formula C≡CH (also written [CCH] or C2H) Cinnamate/coumarate 2-hydroxylase
C2H
Indian film director and actor
Thiruthangaludan (2019). C2H was expected to deliver official original DVDs on the day of a film's theatrical release to homes, for which C2H signed an agreement
Cheran_(director)
Microprocessor model
The Intel 80286 (also marketed as the iAPX 286 and often called Intel 286) is a 16-bit microprocessor that was introduced on February 1, 1982. It was the
Intel_80286
Species of fungus
two-hybrid (C2H) system was created. The strain SN152 that is auxotrophic for leucine, arginine and histidine was used to create this C2H system. It was
Candida_albicans
Chemical compound
French). p. 520. Formyle, s. m. Nom donné par Liebig au radical hypothétique (C2H) de l'ac. formique, du chloroforme, du bromoforme, de l'iodoforme, etc. [Formyle
Iodoform
Chemical compound
anti-aromatic. The synthesis of the structural isomer, the linear hexanitrogen, C2h-N6, was published in 2025. The hexazine molecule bears a structural similarity
Hexazine
2015 Indian film by Cheran
first venture in a new initiative launched by Cheran known as Cinema2Home (C2H). The Telugu version had been indefinitely placed on hold, but was later
JK_Enum_Nanbanin_Vaazhkai
Hexahedron with parallelogram faces
name, and the same symmetry group (D2h , order 8). For parallelepipeds with C2h symmetry, there are two cases: Right parallelogrammic prism: it has four
Parallelepiped
Hydrocarbon compound
reactions are listed below. C 2H+ 3 + e− → C2H + H + H C 2H+ 3 + e− → C2H + H2 CH3CCH+ + e− → C2H + CH3 C3H + O → C2H + CO The destruction of ethynyl is dominantly
Ethynyl_radical
Chemical compound
PR (June 2025). "Preparation of a neutral nitrogen allotrope hexanitrogen C2h-N6". Nature. 642 (8067): 356–360. doi:10.1038/s41586-025-09032-9. PMC 12158757
Hexanitrogen
Chemical compound – an oxide of copper with formula CuO
5257–5261, doi:10.1088/0953-8984/3/28/001. Crystallographic point group: 2/m or C2h. Space group: C2/c. Lattice parameters: a = 4.6837(5), b = 3.4226(5), c =
Copper(II)_oxide
Geometric property of some molecules and ions
This molecule has only one C2 axis: perpendicular to line of three C, but not in the plane of the figure.) C2v C2h Note: This also has a mirror plane.
Chirality_(chemistry)
Layer of gasses surrounding the moon Titan
2 + CH 3 {\displaystyle {\ce {C2H + CH4->C2H2 + CH3}}} C 2 H 2 + h ν ⟶ C 2 H + H {\displaystyle {\ce {C2H2 + h\nu->C2H + H}}} Condensation Propane CH
Atmosphere_of_Titan
Form of water
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Deuterium-depleted_water
Chemical compound
1016/0009-2614(77)85326-8. Wooten, A.; Bozyan, E. P.; Garrett, D. B. (1980). "Detection of C2H in cold dark clouds". Astrophysical Journal. 239: 844. Bibcode:1980ApJ..
Ammonia
Concept in geometry
composite of 4 reflections, with symmetry +1/h[Ch×Ch] (John H. Conway), (C2h/C1;C2h/C1) (#1', Patrick du Val (1964)), order h. In five dimensions, the symmetry
Coxeter_element
Chemical compound
constant is 1.64 mdyn / Å. The dimer has a distorted rhombus structure with C2h symmetry. The dimer is produced synthetically by hydrogenation. In this process
Chromium(II)_hydride
characterized by X-ray crystallography. The unprotonated anion [W12O42]12- has C2h symmetry. Metatungstate [W12O40]8-, with idealized Td symmetry. Lassner,
Paratungstate
Chemical element with atomic number 53 (I)
well-characterised, including bent dark-brown or black I+ 3 and centrosymmetric C2h green or black I+ 5, known in the AsF− 6 and AlCl− 4 salts among others.
Iodine
Chemical element with atomic number 7 (N)
(June 2025). "Preparation of a neutral nitrogen allotrope hexanitrogen C2h-N6". Nature. 642 (8067): 356–360. doi:10.1038/s41586-025-09032-9. ISSN 1476-4687
Nitrogen
Chemical compound
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Calcium_hydride
Organic compound (HCCCCH)
proposed to arise by a reaction between acetylene and the ethynyl radical (C2H), which is produced when acetylene undergoes photolysis. This radical can
Diacetylene
Hydrocarbon compound (CH4) in natural gas
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Methane
Classification system for crystals
C6 Cnv C1v=C1h C2v C3v C4v C6v Cnh C1h C2h C3h C4h C6h Dn D1=C2 D2 D3 D4 D6 Dnh D1h=C2v D2h D3h D4h D6h Dnd D1d=C2h D2d D3d D4d D6d S2n S2 S4 S6 S8 S12
Crystallographic_point_group
Poisonous and flammable gas
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Hydrogen_sulfide
Chemical element with atomic number 36 (Kr)
compounds Krypton compounds KrF2 KrF 4‡ KrF 6‡ KrFAuF6 KrFSbF6 HKrCN HKrC2H Kr(OTeF5)2 HCNKrF2 Organokrypton compounds Xenon compounds Xe(0) AuXe4(Sb2F11)2
Krypton
Groups of point isometries in 3 dimensions
reflection in a plane and a 180° rotation through a line in that plane D1d and C2h: group of order 4 with a reflection in a plane and a 180° rotation through
Point groups in three dimensions
Point_groups_in_three_dimensions
1920s American amphibious airliner
The Loening C-2 Air Yacht was an amphibious airliner produced in the United States at the end of the 1920s, developed from the OL observation aircraft
Loening_C-2
Chemical compound
compounds Krypton compounds KrF2 KrF 4‡ KrF 6‡ KrFAuF6 KrFSbF6 HKrCN HKrC2H Kr(OTeF5)2 HCNKrF2 Organokrypton compounds Xenon compounds Xe(0) AuXe4(Sb2F11)2
Xenon_dioxide
Chemical compound
Mercury(IV) HgF4 (hypothetical) Amalgams Na(Hg) Al(Hg) K(Hg) Au(Hg) Tl(Hg) Sn(Hg) Mercury cations Hg2+ Hg2+2 Hg2+3 Hg2+4 Hg4+3 HgCH+3 HgC2H+5 HgC6H+5
Mercury(II)_sulfate
Analytical technique based on determining mass to charge ratio of ions
ion(s) Comments H2 101 H+3 (MH)+ Significant fragmentation CH4 132 CH+5, C2H+5 (MH)+, (M · C2H5)+ Some fragmentation, can form adducts NH3 204 NH+4 (MH)+
Mass_spectrometry
Ordered arrangement of atoms, ions, or molecules in a crystalline material
(S) Body-centered (I) Face-centered (F) Triclinic (a) Ci aP Monoclinic (m) C2h mP mS Orthorhombic (o) D2h oP oS oI oF Tetragonal (t) D4h tP tI Hexagonal
Crystal_structure
Hydrocarbon compound (H2C=CH2)
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Ethylene
Solid form of the 7th element
with six nitrogens should exist at ambient conditions. The synthesis of C2h-N6 was published in 2025. It is stable at liquid nitrogen temperature and
Solid_nitrogen
Organic compound (H3C–CH3)
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Ethane
Class of positively-charged molecules
CH+5 is called methanium.. Typically named for the parent hydrocarbon, e.g. C2H+7 is ethanium. silanium (sometimes silonium), SiH+5 (protonated silane) (should
Onium_ion
Chemical compound
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
1-Butene
Chemical compound
2Ag/c1-2;;/q-2;2*+1 Key: FIDGMLJJLFFOEI-UHFFFAOYSA-N ethynide: InChI=1S/C2H.Ag/c1-2;/h1H;/q-1;+1 Key: SLERPCVQDVNSAK-UHFFFAOYSA-N SMILES [Ag+].[Ag+]
Silver_acetylide
Topologically insulating chemical compound
Mercury(IV) HgF4 (hypothetical) Amalgams Na(Hg) Al(Hg) K(Hg) Au(Hg) Tl(Hg) Sn(Hg) Mercury cations Hg2+ Hg2+2 Hg2+3 Hg2+4 Hg4+3 HgCH+3 HgC2H+5 HgC6H+5
Mercury_telluride
One of the 7 crystal systems in crystallography
Domatic Cs (C1h) m *11 [ ] polar hilgardite Pm, Pc Cm, Cc 10–12 Prismatic C2h 2/m 2* [2,2+] centrosymmetric gypsum P2/m, P21/m C2/m 13–15 P2/c, P21/c C2/c
Monoclinic_crystal_system
for n = 1 we have S2 (1×), also denoted by Ci; this is inversion symmetry. C2h, [2,2+] (2*) and C2v, [2], (*22) of order 4 are two of the three 3D symmetry
Cyclic symmetry in three dimensions
Cyclic_symmetry_in_three_dimensions
Chemical compound
Masao (1972). "Neutron Structure Determination of Monosodium Acetylide, NaC2H, at 293 and 5K". The Journal of Chemical Physics. 56 (10): 4947–4951. Bibcode:1972JChPh
Monosodium_acetylide
Chemical compound
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Hydrogen_chloride
Chemical compound
Mercury(IV) HgF4 (hypothetical) Amalgams Na(Hg) Al(Hg) K(Hg) Au(Hg) Tl(Hg) Sn(Hg) Mercury cations Hg2+ Hg2+2 Hg2+3 Hg2+4 Hg4+3 HgCH+3 HgC2H+5 HgC6H+5
Mercury(I)_bromide
Chemical compound
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Beryllium_monohydride
Chemical compound, tautomer of hydrogen cyanide
C.; et al. (1988). "Molecules in external galaxies: the detection of CN, C2H, and HNC, and the tentative detection of HC3N". Astronomy and Astrophysics
Hydrogen_isocyanide
Organomercuric antiseptic for external use on minor cuts
Mercury(IV) HgF4 (hypothetical) Amalgams Na(Hg) Al(Hg) K(Hg) Au(Hg) Tl(Hg) Sn(Hg) Mercury cations Hg2+ Hg2+2 Hg2+3 Hg2+4 Hg4+3 HgCH+3 HgC2H+5 HgC6H+5
Merbromin
Chemical compound
a P1 space group and consist of discrete Au4Cl8 molecules with idealised C2h symmetry. Within this the Au(I) centers are linearly coordinated with a Cl-Au-Cl
Gold(I,III)_chloride
Chemical compound
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Hydrogen_peroxide
Class of ions
cyclopropanes rather than true primary cations. The simple ethyl cation, C2H+5 has been demonstrated experimentally and computationally to be bridged
Carbenium_ion
Hydrocarbon compound (C3H8)
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Propane
Group of highly reactive chemical elements
->[{\ce {150\ ^{o}C}}]\ 2NaC2H\ +\ H2}}} 2 Na + 2 NaC 2 H → 220 o C 2 Na 2 C 2 + H 2 {\displaystyle {\ce {2Na\ +\ 2NaC2H\ ->[{\ce {220\ ^{o}C}}]\
Alkali_metal
Hydrocarbon compound (HC≡CH)
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Acetylene
Form of water
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Heavy_water
Chemical compound
{\displaystyle {\xrightarrow {C4H}}} → C 2 H {\displaystyle {\xrightarrow {C2H}}} ⟶ {\displaystyle \longrightarrow } The enzyme 4-hydroxycinnamate
Umbellic_acid
Chemical compound hydrogen phosphide
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Phosphine
Chemical compound
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Iron(II)_hydride
Unsaturated inorganic compound
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Triazene
Chemical compound
that is manifested in a number of physical properties. The compound has C2h symmetry, with each metal atom having pseudo-octahedral geometry. In the
Pentamethylcyclopentadienyl ruthenium dichloride dimer
Pentamethylcyclopentadienyl_ruthenium_dichloride_dimer
Colorless flammable liquid with an ammonia-like odor
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Hydrazine
Chemical compound
the M4O16 core structure for the tetramer structures of these compounds is C2h. Like the ethoxide, titanium methoxide Ti(OMe)4 exists as a tetramer with
Titanium_ethoxide
Chemical compound with hydrogen and carbon group atoms
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Group_14_hydride
Chemical compound (C6H14)
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Hexane
Alkane with 5 carbon atoms C5H12
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Pentane
Chemical compound
0 °C) ? bar Critical point 425 K (152 °C) 43.2 bar Structure Symmetry group C2h Gas properties ΔfH0 110.2 kJ/mol Cp 79.5 J/mol·K Liquid properties ΔfH0 90
Butadiene
Chemical compound (CH3CH=CH2)
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Propylene
Chemical compound
}}\\{}\end{matrix}}} → C 2 H {\displaystyle {\begin{matrix}{}\\{\xrightarrow {\mathrm {C2H} }}\\{}\end{matrix}}} ⟶ {\displaystyle \longrightarrow } Umbelliferone
Umbelliferone
Alloy of zirconium and hydrogen
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Zirconium_hydride
Chemical compound
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
1-Butyne
Chemical compound
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Plutonium_trihydride
Symmetry of molecules of chemical compounds
and B with subscripts 1 and 2 as above and subscripts g and u as in the C2h example below. (Subscript 3 also appears in D2) The irreducible representations
Molecular_symmetry
Organomercury chemical compound
Mercury(IV) HgF4 (hypothetical) Amalgams Na(Hg) Al(Hg) K(Hg) Au(Hg) Tl(Hg) Sn(Hg) Mercury cations Hg2+ Hg2+2 Hg2+3 Hg2+4 Hg4+3 HgCH+3 HgC2H+5 HgC6H+5
Dimethylmercury
Chemical compound (C7H16)
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Heptane
Chemical compound consisting of hydrogen bonded to a halogen element
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Hydrogen_halide
Any chemical compound having at least one radon atom in its structure
compounds Krypton compounds KrF2 KrF 4‡ KrF 6‡ KrFAuF6 KrFSbF6 HKrCN HKrC2H Kr(OTeF5)2 HCNKrF2 Organokrypton compounds Xenon compounds Xe(0) AuXe4(Sb2F11)2
Radon_compounds
Alloy of mercury with another metal
Mercury(IV) HgF4 (hypothetical) Amalgams Na(Hg) Al(Hg) K(Hg) Au(Hg) Tl(Hg) Sn(Hg) Mercury cations Hg2+ Hg2+2 Hg2+3 Hg2+4 Hg4+3 HgCH+3 HgC2H+5 HgC6H+5
Amalgam_(chemistry)
Chemical compound
gold or mercury reagents, phenylacetylene hydrates to give acetophenone: PhC2H + H2O → PhC(O)CH3 Alkyne Alkyne trimerisation Bordwell, F.G. (1988). "Equilibrium
Phenylacetylene
Chemical compound
typical for diimides. The cis isomer has C2v symmetry and the trans isomer has C2h symmetry. These isomers can interconvert, but the process is slow enough
Dinitrogen_difluoride
Geometry and crystallography point array
Face-centered (F) Triclinic (a) Ci 1 ¯ {\displaystyle {\bar {1}}} aP Monoclinic (m) C2h 2 / m {\displaystyle 2/m} mP mS Orthorhombic (o) D2h m m m {\displaystyle
Bravais_lattice
Chemical compound
compounds Krypton compounds KrF2 KrF 4‡ KrF 6‡ KrFAuF6 KrFSbF6 HKrCN HKrC2H Kr(OTeF5)2 HCNKrF2 Organokrypton compounds Xenon compounds Xe(0) AuXe4(Sb2F11)2
Xenon_dichloride
Chemical compound
compounds Krypton compounds KrF2 KrF 4‡ KrF 6‡ KrFAuF6 KrFSbF6 HKrCN HKrC2H Kr(OTeF5)2 HCNKrF2 Organokrypton compounds Xenon compounds Xe(0) AuXe4(Sb2F11)2
Bis(pentafluorophenyl)xenon
Inorganic radical with the chemical formula NH
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Imidogen
Physical and chemical properties of pure water
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Properties_of_water
Notation to represent symmetry in point groups
C8 ... C∞ Cnv C1v = C1h C2v C3v C4v C5v C6v C7v C8v ... C∞v Cnh C1h = Cs C2h C3h C4h C5h C6h C7h C8h ... C∞h Sn S1 = Cs S2 = Ci S3 = C3h S4 S5 = C5h S6
Schoenflies_notation
Flammable organic fuel (C4H10)
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Butane
Class of chemical compounds
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Boranes
Chemical compound
Peter R. (2025). "Preparation of a neutral nitrogen allotrope hexanitrogen C2h-N6". Nature. 642 (8067): 356–360. doi:10.1038/s41586-025-09032-9. ISSN 0028-0836
Bromine_azide
Chemical element with atomic number 80 (Hg)
Mercury(IV) HgF4 (hypothetical) Amalgams Na(Hg) Al(Hg) K(Hg) Au(Hg) Tl(Hg) Sn(Hg) Mercury cations Hg2+ Hg2+2 Hg2+3 Hg2+4 Hg4+3 HgCH+3 HgC2H+5 HgC6H+5
Mercury_(element)
Chemical compound
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Sodium_hydride
Chemical compound
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Hydrogen_polyoxide
Chemical reaction in organic chemistry
suggested the following process on his way to diphenylbutadiyne: CuCl + PhC2H + NH3 → PhC2Cu + NH4Cl 4 PhC2Cu + O2 → 2PhC2C2Ph + 2Cu2O In the related Eglinton
Glaser_coupling
Two-player or four-player strategy game
opponent will then "help" to build a winding path for the player (ie. 1.__ c2h 2.d2 b2h 3.c2 a2v note that at this position 4.c1 is necessary to prevent
Quoridor
Chemical compound
linkage between them. Liquid bicyclohexyl contains a mixture of molecules with C2h and C2 symmetry, termed ee anti and ee gauche, respectively. The link between
Bicyclohexyl
Low level firmware interface to the hardware
Protected Mode C0h Get System Parameters C1h Get Extended BIOS Data Area Segment C2h Pointing Device Functions C3h Watchdog Timer Functions - PS/2 systems only
BIOS_interrupt_call
Unstable and toxic chemical compound
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Hydrazoic_acid
investigated spectroscopically and experimentally. B-R (R=H, F, Cl, Br, I, NH2, C2H, Ph) have been observed via microwave or IR spectroscopy at low temperature
Borylene
Hydrocarbon compound with the formula C8H18
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Octane
10 Fokker Super Universal Heinkel He 116 Klemm L 26 II Loening-Keystone C2H Air Yacht Morane-Saulnier M.S.225 Potez 36 Raab-Katzenstein RK.2 Pelikan
List of aircraft used in China before 1937
List_of_aircraft_used_in_China_before_1937
Chemical compound
alkenes alkynes Cycloalkanes Cycloalkenes Cycloalkynes Annulenes CH CH2 CH3 C2H Silanes SiH4 Si2H6 Si3H8 Si4H10 Si5H12 Si6H14 Si7H16 Si8H18 Si9H20 Si10H22
Hydrogen_fluoride
Classification of crystalline materials by their three-dimensional structural geometry
m *11 [ ] polar 2 cyclic Z 2 {\displaystyle \mathbb {Z} _{2}} prismatic C2h 2/m 2* [2,2+] centrosymmetric 4 Klein four V = Z 2 × Z 2 {\displaystyle \mathbb
Crystal_system
C2H
C2H
C2H
C2H
Girl/Female
Tamil
Krushngi | கரஷà¯à®£à®•à¯€
Girl/Female
Arabic
Urbanite
Boy/Male
American, British, English, German, Portuguese, Spanish
Form of Edward; Guardian of Prosperity; Princess; Prosperous Guardian
Boy/Male
Hindu, Indian, Punjabi, Sikh
Kindness; Compassion
Girl/Female
British, English, French, Swedish
From the Latin Cecilia; Blind; Sixth
Male
Celtic
, officer or magistrate.
Girl/Female
Gujarati, Indian
Fairy; Goddess
Surname or Lastname
English and Scottish
English and Scottish : from the plural of Middle English oven ‘oven’, ‘furnace’ (for lime, iron, charcoal, etc.), hence a topographic name or occupational name for someone who lived near or worked at an oven or furnace. According to MacLysaght this surname is found also in County Fermanagh in Ireland.North German : patronymic from the Frisian personal name Ove.
Boy/Male
German, Norse
Thor's Bear
Girl/Female
Hindu, Indian
Prayer
C2H
C2H
C2H
C2H
C2H
n.
The hypothetical radical C2H3, regarded as the characteristic residue of ethylene and that related series of unsaturated hydrocarbons with which the allyl compounds are homologous.
n.
A colorless, mobile, inflammable liquid, C2H5.NH2, very volatile and with an ammoniacal odor. It is a strong base, and is a derivative of ammonia. Called also ethyl carbamine, and amido ethane.
n.
Any one of series of compounds, hydrosulphides of alcohol radicals, in composition resembling the alcohols, but containing sulphur in place of oxygen, and hence called also the sulphur alcohols. In general, they are colorless liquids having a strong, repulsive, garlic odor. The name is specifically applied to ethyl mercaptan, C2H5SH. So called from its avidity for mercury, and other metals.
n.
An amido derivative of xanthic acid obtained as a white crystalline substance, C2H5O.CS.NH2; -- called also xanthogen amide.
n.
A yellow crystalline substance, (C6H5.C2H2)2CO, the ketone of cinnamic acid.
n.
Any one of a certain series of basic compounds containing a chain of four nitrogen atoms; for example, ethyl tetrazone, (C2H5)2N.N2.N(C2H5)2, a colorless liquid having an odor of leeks.
n.
A light, volatile, mobile, inflammable liquid, (C2H5)2O, of a characteristic aromatic odor, obtained by the distillation of alcohol with sulphuric acid, and hence called also sulphuric ether. It is powerful solvent of fats, resins, and pyroxylin, but finds its chief use as an anaesthetic. Called also ethyl oxide.
n.
A colorless oily liquid, (C2H5)2S2, having a strong garlic odor; -- called also ethyl disulphide. By extension, any one of the series of related compounds.
n.
A gaseous hydrocarbon, C2H6, forming a constituent of ordinary illuminating gas. It is the second member of the paraffin series, and its most important derivatives are common alcohol, aldehyde, ether, and acetic acid. Called also dimethyl.
n.
A body occurring in small quantity in the juices of muscle, in the lungs, and elsewhere, but especially in the bile, where it is found as a component part of taurocholic acid, from which it can be prepared by decomposition of the acid. It crystallizes in colorless, regular six-sided prisms, and is especially characterized by containing both nitrogen and sulphur, being chemically amido-isethionic acid, C2H7NSO3.
n.
A compound of mercaptan formed by replacing its sulphur hydrogen by a metal; as, potassium mercaptide, C2H5SK.
n.
A compound derived from ethyl alcohol by the replacement of the hydroxyl hydrogen, after the manner of a hydrate; an ethyl alcoholate; as, potassium ethylate, C2H5.O.K.
n.
A colorless, gaseous hydrocarbon, C2H4, forming an important ingredient of illuminating gas, and also obtained by the action of concentrated sulphuric acid in alcohol. It is an unsaturated compound and combines directly with chlorine and bromine to form oily liquids (Dutch liquid), -- hence called olefiant gas. Called also ethene, elayl, and formerly, bicarbureted hydrogen.
n.
A thick, colorless liquid, C2H4(OH)2, of a sweetish taste, produced artificially from certain ethylene compounds. It is a diacid alcohol, intermediate between ordinary ethyl alcohol and glycerin.
n.
The hypothetical radical, (C6H5.C2H2)2C, of cinnamic compounds.
n.
The correspondence or resemblance of substances belonging to the same type or series; a similarity of composition varying by a small, regular difference, and usually attended by a regular variation in physical properties; as, there is an homology between methane, CH4, ethane, C2H6, propane, C3H8, etc., all members of the paraffin series. In an extended sense, the term is applied to the relation between chemical elements of the same group; as, chlorine, bromine, and iodine are said to be in homology with each other. Cf. Heterology.
n.
A white crystalline nitrogenous substance, C2H4.(CO)2.NH, obtained by treating succinic anhydride with ammonia gas. It is a typical imido acid, and forms a series of salts. See Imido acid, under Imido.
n.
A white crystalline nitrogenous substance (C2H4N4); -- called also dicyandiamide.
n.
A monatomic, hydrocarbon radical, C2H5 of the paraffin series, forming the essential radical of ethane, and of common alcohol and ether.