Crystal engineering using very short and linear C(sp)-H center dot center dot center dot N hydrogen bonds: formation of head-to-tail straight tapes and their assembly into nonlinear optical polar crystals

Authors
Ohkita, M Suzuki, T Nakatani, K Tsuji, T
Citation
M. Ohkita et al., Crystal engineering using very short and linear C(sp)-H center dot center dot center dot N hydrogen bonds: formation of head-to-tail straight tapes and their assembly into nonlinear optical polar crystals, CHEM COMMUN, (16), 2001, pp. 1454-1455
Citations number
22
Categorie Soggetti
Chemistry
Journal title
CHEMICAL COMMUNICATIONS
ISSN journal
13597345 → ACNP
Issue
16
Year of publication
2001
Pages
1454 - 1455
Database
ISI
SICI code
1359-7345(20010821):16<1454:CEUVSA>2.0.ZU;2-#
Abstract
The crystallization of 4-ethynylpyridine (1) and 4-(4-ethynylphenyl)ethynyl pyridine (2) leads to C(sp)-H . . .N hydrogen bonded straight tapes that fu rther assemble into polar crystals, in the case of 2, and show intense powd er SHG response, 8 times more efficient than crystalline urea.