Accession Number : AD0690348

Title :   COORDINATION OF SILICON TETRAFLUORIDE WITH PYRIDINE AND OTHER NITROGEN ELECTRON-PAIR DONOR MOLECULES,

Corporate Author : MCGILL UNIV MONTREAL (QUEBEC) DEPT OF CHEMISTRY

Personal Author(s) : Guertin,Jacques P. ; Onyszchuk,Mario

Report Date : 22 AUG 1968

Pagination or Media Count : 6

Abstract : Silicon tetrafluoride reacts with pyridine, pyrrolidine, and piperidine forming solid 1:2 complexes. With ethylenediamine, the stable 1:1 complex results. These compounds are easily hydrolyzed and sublimed and have no measurable vapor pressure at 25C. Hydrolysis of SiF4:2C5H5N with aqueous HF produces pyridinium hexafluorosilicate, (C5H5NH(+))2SiF6(2-). Ethylenediamine readily displaces pyridine from SiF4:2C5H5N, forming SiF4:NH2(CH2)2NH2. Infrared spectra of the complexes are compared in the 900-280/cm region, but it was not possible to decide whether the pyrrolidine and piperidine complexes are cis- or trans-octahedral. (Author)

Descriptors :   (*SILICON COMPOUNDS, *COMPLEX COMPOUNDS), (*PYRIDINES, COMPLEX COMPOUNDS), (*ETHYLENEDIAMINE, COMPLEX COMPOUNDS), PIPERIDINES, HYDROLYSIS, INFRARED SPECTRA, SYNTHESIS(CHEMISTRY), CANADA

Subject Categories : Inorganic Chemistry
      Organic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE