Organosilanes bearing a phosphine imide moiety were synthesized and crystallographically characterized. Reaction of the pentacoordinated hydrodiphenylsilyl derivative with water gave [2-(diphenylphosphino)phenyl]diphenylsilanol accompanied by both reduction of the phosphine imide moiety and hydrolytic oxidation of the Si-H moiety.

A survey of carotenoid—protein complexes is presented. Distinction is made between astaxanthin—proteins in which the absorption band of the carotenoid is unaltered in shape, and carotenoid—lipoglycoprotein complexes. The proposal by Buchwald and Jencks79 that the carotenoid is twisted about the double bonds of the polyene chain, is discussed and sustained for astaxanthin—proteins. A mode of bin...

The mol-ecules in the title compound (systematic name: 5-aminoisoindole-1,3-dione), C(8)H(6)N(2)O(2), are packed through N-H⋯O inter-molecular hydrogen-bonding inter-actions. Two types of hydrogen bonds are observed: one, involving the imide group, forms mol-ecular chains along the c axis and another two, involving the amino group, connect the mol-ecular chains.

The title compound {systematic name: 2-[7-fluoro-3,4-di-hydro-3-oxo-4-(prop-2-yn-1-yl)-2H-1,4-benzoxazin-6-yl]-4,5,6,7-tetra-hydro-1H-iso-indole-1,3(2H)-dione}, C19H15FN2O4, is a dicarboximide herbicide. The dihedral angle between the male-imide and benzene ring planes is 66.13 (5)°. In the crystal, C-H⋯O and C-H⋯F hydrogen bonds and weak C-H⋯π inter-actions [3.5601 (19) Å] link adjacent mol-ec...

The binding energy and electronic coupling of perylenediimide (PDI) pi-stacked dimers were calculated using M06-2X/6-31++G** as a function of stacking geometry. Due to shallow minima in the potential energy surface, electronic coupling can vary by over an order of magnitude among energetically accessible geometries. The coupling was then determined for 20 PDI derivatives with various substituti...

It is suggested that glutarimide moiety (2,6-piperidinedione) with the intact imide group (OC-NH-CO) and substituted at alpha or beta position in the ring, is acting as the carrier molecule (vector), which transports biologically active substituents (functional groups) through cell membranes. The results obtained from quantum chemical calculations and experimental studies indicate that structur...

In the title compound, C16H11NO2·C5H9NO, the dihedral angles between the male-imide and phenyl rings are 34.7 (2) and 64.8 (2)°. In the crystal, the 2,3-di-phenyl-male-imide and 1-methyl-pyrrolidin-2-one mol-ecules form centrosymmetrical dimers via pairs of strong N-H⋯O hydrogen bonds and π-π stacking inter-actions between the two neighboring male-imide rings [centroid-centroid distance = 3.495...