Weak hydrogen bonding .5. Experimental evidence for the long-range nature of C C-H center dot center dot center dot pi interactions: Crystallographic and spectroscopic studies of three terminal alkynes

被引：61
作者：
Steiner, T
Tamm, M
Grzegorzewski, A
Schulte, N
Veldman, N
Schreurs, AMM
Kanters, JA
Kroon, J
vanderMaas, J
Lutz, B
机构：
[1] FREE UNIV BERLIN,INST ANORGAN & ANALYT CHEM,D-14195 BERLIN,GERMANY
[2] UNIV UTRECHT,DEPT CRYSTAL & STRUCT CHEM,BIJVOET CTR BIOMOL RES,NL-3584 CH UTRECHT,NETHERLANDS
[3] UNIV UTRECHT,FAC CHEM,DEPT ANALYT MOL SPECTROMETRY,NL-3508 TB UTRECHT,NETHERLANDS
来源：
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 | 1996年 / 11期
关键词：
D O I：
10.1039/p29960002441
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
In the crystal structures of three terminal alkynes, long C=C-H ... C=C contacts with H ... C separations in the range 2.7-3.1 Angstrom are observed, Despite the long distances, these contacts possess the characteristic infrared spectroscopic features of weak hydrogen bonds, This provides direct evidence that the range of C-H ...pi interactions donated by sufficiently acidic C-H groups extends beyond van der Waals separation, In two of the crystal structures, the C-H ...pi interactions form interconnected systems C=C-H ... C=C-H ... C=C-H.
引用
收藏
页码：2441 / 2446
页数：6
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