- The synthesis and crystal structure of β-substituted thiaporphyrins with novel cyclic substituents
-
21,23-Dithiaporphyrins and 21-monothiaporphyrins with propane-1,3-diyldioxy and its derivatives at the β-thiophene carbons were synthesized and characterized. The cyclic substituents introduced at the β-thiophene carbons altered the electronic properties of the porphyrins. The X-ray structure for 2,3-bis(2,2-dibenzylpropane-1,3-diyldioxy) substituted 21-monothiaporphyrin showed a more planar structure compared to the saddle shaped structure reported for β-unsubstituted 21-monothiaporphyrins.
- Agarwal, Neeraj,Mishra, Sarada Prasad,Hung, Chen-Hsiung,Kumar, Anil,Ravikanth, Mangalampalli
-
p. 1173 - 1180
(2007/10/03)
-
- Synthetic lubricating oil
-
A synthetic lubricating oil contains an esterification product obtained from a hydroxycarboxylic acid polyol ester (A) and at least one aliphatic monocarboxylic acid (B), and optionally either an aliphatic carboxylic acid having two or more carboxyl groups (C) or a combination of an aliphatic carboxylic acid having two or more carboxyl groups (C) and an aliphatic polyhydric alcohol (D).
- -
-
-
