나명수
2019-11-06T05:43:40Z
2019-11-06T05:43:40Z
2005-11
JOURNAL OF ORGANOMETALLIC CHEMISTRY, v. 690, No. 21-22, Page. 4677-4684
0022-328X
1872-8561
https://www.sciencedirect.com/science/article/pii/S0022328X05005863
https://repository.hanyang.ac.kr/handle/20.500.11754/111929
Bis(alkyldihydroxysilyl)methanes 1 [R(HO)(2)SiCH2Si(OH)(2)R:R = methyl (a) and cyclopentyl (b)] were prepared in 65% and 86% yields by the hydrolysis of the corresponding bis(alkyldichlorosilyl)methanes using aniline as HCl scavenger in diethyl ether. They were isolated in pure forms, fully characterized, and studied on their thermal properties. In single crystal X-ray structures, the molecules of 1a and 1b crystallize in the tetragonal (a = b = 22.884 angstrom, c = 6.1485 angstrom; alpha = beta = gamma = 90 degrees in a unit cell) and triclinic [a = 5.1729(14) angstrom [alpha = 89.133(4)], b = 11.394(3) angstrom [beta = 85.065(4)], c = 12.548(3) angstrom [gamma = 79.956(4) in a unit cell] space groups, respectively. In their solid state, the remarkable hydrogen bondings of compounds 1a and 1b lead to three dimensional network structure and one dimensional columnar tube, respectively. From the studies on their thermal analyses, both compounds 1a and 1b were stable below their melting points and then the losses of waters, which were formed by the self-condensation coincident with their melting, occurred. (c) 2005 Elsevier B.V. All rights reserved.
This research was supported financially by the Ministry of Science and Technology.
en_US
ELSEVIER SCIENCE SA
silanepolyols
silanediols
bis(dihydroxysilyl)methanes
bis(alkyldihydroxysilyl)methanes
bis(dichlorosilyl)methanes
hydrolysis
condensation
Synthesis and structures of bis(alkyldihydroxysilyl)methanes
Article
10.1016/j.jorganchem.2005.07.106
JOURNAL OF ORGANOMETALLIC CHEMISTRY
Kim, Jeong Hyun
Kang, Seung-Hyun
Han, Joon Soo
Lee, Myong Euy
Moon, Do Hyun
Lah, Myoung Soo
Yoo, Bok Ryul
2009205569
E
COLLEGE OF SCIENCE & TECHNOLOGY[E]
DIVISION OF SCIENCE & TECHNOLOGY
mslah