Three tripod molecules,tris(2-methoxy-5-nitrobenzyl)phosphine oxide(1),tris(2-butoxy-3-methyl-5-nitrobenzyl)phosphine oxide(2),and tris(3-nitrobenzyl)amine(TNBA),were synthesized and crystallized.The structures of 1,2...Three tripod molecules,tris(2-methoxy-5-nitrobenzyl)phosphine oxide(1),tris(2-butoxy-3-methyl-5-nitrobenzyl)phosphine oxide(2),and tris(3-nitrobenzyl)amine(TNBA),were synthesized and crystallized.The structures of 1,2,and their comparison(TNBA)were determined by X-ray crystallography.It is noteworthy that compound 1 interacted with adjacent molecules viaπ-πstacking and C-H···πinteractions to yield an open supramolecular network with the porosity P in 8.9%,whereas compound 2 gathered closely to form an open-dimer capsule by sixfold N-O···πand triple C-H···O interactions,which showed a rare example of a stable in,out-invertomer of phosphine inversion existing in open-dimers.A series of columns were built and arranged side by side by these weak interactions.By contrast,TNBA crystallized to form a 2D network maintained by C-H···O and C-H···πinteractions.It seems minor changes of the chemical structure may cause large differences in the crystal structure and interactions in crystal engineering.展开更多
A series of maerocyclic arylate diraers have been selectively synthesized by an interfacial polyconden-sation of o-phthaloyldichloride with bisphenols A combination of GPC,FAB-MS,1H and 13C NMR unambiguously confirmed...A series of maerocyclic arylate diraers have been selectively synthesized by an interfacial polyconden-sation of o-phthaloyldichloride with bisphenols A combination of GPC,FAB-MS,1H and 13C NMR unambiguously confirmed the cyclic nature Although single-crystal X-ray analysis of two such macrocycles reveals no severe strain on the cyclic structures,these macrocycles can undergo facile melt polymerization to give high molecular weight polyary-lates.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.20602017&20932004)the National Basic Research Program of China(Grant No.2007CB925103)the Natural Science Foundation of Jiangsu(Grant No.BK2008259)
文摘Three tripod molecules,tris(2-methoxy-5-nitrobenzyl)phosphine oxide(1),tris(2-butoxy-3-methyl-5-nitrobenzyl)phosphine oxide(2),and tris(3-nitrobenzyl)amine(TNBA),were synthesized and crystallized.The structures of 1,2,and their comparison(TNBA)were determined by X-ray crystallography.It is noteworthy that compound 1 interacted with adjacent molecules viaπ-πstacking and C-H···πinteractions to yield an open supramolecular network with the porosity P in 8.9%,whereas compound 2 gathered closely to form an open-dimer capsule by sixfold N-O···πand triple C-H···O interactions,which showed a rare example of a stable in,out-invertomer of phosphine inversion existing in open-dimers.A series of columns were built and arranged side by side by these weak interactions.By contrast,TNBA crystallized to form a 2D network maintained by C-H···O and C-H···πinteractions.It seems minor changes of the chemical structure may cause large differences in the crystal structure and interactions in crystal engineering.
基金Project supported by the National Natural Science Foundation of China
文摘A series of maerocyclic arylate diraers have been selectively synthesized by an interfacial polyconden-sation of o-phthaloyldichloride with bisphenols A combination of GPC,FAB-MS,1H and 13C NMR unambiguously confirmed the cyclic nature Although single-crystal X-ray analysis of two such macrocycles reveals no severe strain on the cyclic structures,these macrocycles can undergo facile melt polymerization to give high molecular weight polyary-lates.
