Dimethyl 6-[1,2-bis(methoxycarbonyl)-2-(triphenyl-lambda5-phosphanylidene)ethylideneamino]-2-methylsulfanyl-3,4-pyridinedicarboxylate forms a chain of hydrogen-bonded rings.
In the title compound, C(34)H(31)N(2)O(8)PS, the intramolecular distances provide evidence for polarization of the molecular-electronic structure. The molecules are linked into complex chains of rings by three independent C-H...O hydrogen bonds. The significance of this study lies in its finding that two of the four carbonyl O atoms play no role in the hydrogen bonding, despite the large excess of potential hydrogen-bond donors present.
Orozco
Fabián
F
Departamento de Química, Universidad de Valle, AA 25360 Cali, Colombia.
Low
John N
JN
Cobo
Justo
J
Glidewell
Christopher
C
D003461:Crystallography; D006860:Hydrogen Bonding; D015394:Molecular Structure; D010720:Phosphines / Q000737:chemistry*; D011725:Pyridines / Q000737:chemistry*
D010720:Phosphines; D011725:Pyridines; C531926:dimethyl 6-(1,2-bis(methoxycarbonyl)-2-(triphenyl-lambda5-phosphanylidene)ethylideneamino)-2-methylsulfanyl-3,4-pyridinedicarboxylate