Kim, JH Kang, SH Han, JS Lee, ME Moon, DH Lah, MS Yoo, BR 2024-01-21T04:07:03Z 2024-01-21T04:07:03Z 2021-09-01 2005-11-01 0022-328X https://pubs.kist.re.kr/handle/201004/135994 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. English ELSEVIER SCIENCE SA RAY CRYSTAL-STRUCTURE ORGANOSILANEDIOLS METALLASILOXANES SILSESQUIOXANES DERIVATIZATION SILANETRIOLS SILICON BONDS MODEL Synthesis and structures of bis(alkyldihydroxysilyl)methanes Article 10.1016/j.jorganchem.2005.07.106 1 JOURNAL OF ORGANOMETALLIC CHEMISTRY, v.690, no.21-22, pp.4677 - 4684 JOURNAL OF ORGANOMETALLIC CHEMISTRY 690 21-22 4677 4684 scie scopus 000233063200016 2-s2.0-26444575795 Chemistry, Inorganic & Nuclear Chemistry, Organic Chemistry Article RAY CRYSTAL-STRUCTURE ORGANOSILANEDIOLS METALLASILOXANES SILSESQUIOXANES DERIVATIZATION SILANETRIOLS SILICON BONDS MODEL silanepolyols silanediols bis(dihydroxysilyl)methanes bis(alkyldihydroxysilyl)methanes bis(dichlorosilyl)methanes hydrolysis condensation