28 research outputs found
Crystal structures and charge distributions in 2-phenyl-imidazo[1,2-a]-pyridine and two related salts
No full text3,5-bis[(N,N-dimethylamino)methyl-eneamino]-1-methyl-4- nitropyrazole from X-ray powder diffraction data.
No full text3,5-bis[(N,N-dimethylamino)methyl-eneamino]-1-methyl-4- nitropyrazole from X-ray powder diffraction data.
No full textCrystal and molecular structures of 1-hydro-2-phenyl-imidazo[1,2-a]-pyridinium bromide monohydrate
No full textSynthesis and crystal structure of 7,7,10-trimethyl-7-silabenzo[a]anthrone
No full textSkeletal isomerization of arylsilanes that occurs under conditions of catalytic dehydrocyclization and is accompanied by migration of the triorganosilyl group was additionally confirmed by dehydrocyclization of dimethyl(2,4-dimethylphenyl)(1-naphthyl)silane on chromium-containing oxide catalysts
Hydrogen bonding in hydroxypyridium salts
No full textThe crystal structures of 6-methyl-2-ethyl-3-hydroxypyridiniun nitrate (C8H12NO)NO3 (I) and fumarate (C8H12NO)2C4H2O4 (II) were solved and refined from X-ray single crystal diffraction data (CuKΞ±, (I) a=4.6477(2), b=14.5906(9), c=14.5551(8) Γ
, Ξ²=99.100(4)Β°, space group P21/c, Z=4, Rp/Rwp=0.033/0.047; (II) a=8.8293(3), b=13.4268(5), c=8.3893(3) Γ
, Ξ²=96.303(3)Β°, space group P21/c, Z=2, Rp/Rwp=0.034/0.049). Both structures are built of infinite chains along ac diagonal of the unit cells formed by hydrogen bonding between the hydroxypyridium cation and the corresponding anion. Each fumarate anion is linked to four hydroxypyridium cations while nitrate anion is connected with two hydroxypyridium cations only leaving one oxygen atom in the nitrogen group isolated. Β© 2018 Walter de Gruyter GmbH, Berlin/Boston 2018
Some reactions of 8,11,11-trimethyl-11-silabenzo[b]naphtho[2,3-d]thiophen-6-one involving the carbonyl group
No full text
