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Neutral and Cationic Phosphoramide Adducts of Silicon Tetrachloride: Synthesis and Characterization of Their Solution and Solid‐State Structures
Author(s) -
Denmark Scott E.,
Eklov Brian M.
Publication year - 2007
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200701466
Subject(s) - chemistry , cationic polymerization , hexamethylphosphoramide , adduct , zonal and meridional , solid state , inorganic chemistry , medicinal chemistry , stereochemistry , organic chemistry , atmospheric sciences , geology
The solution and solid‐state structures of hexamethylphosphoramide (HMPA) adducts of tetrachlorosilane (SiCl 4 ) are discussed. In solution, the meridional and facial isomers of the hexa‐coordinate cationic complex 3 HMPA ⋅ SiCl 3 + Cl − ( 2 ) predominate at all HMPA concentrations, and are in equilibrium with the hexa‐coordinate neutral trans ‐ and cis ‐2 HMPA ⋅ SiCl 4 complexes ( 1 ), as well as the penta‐coordinate cationic cis ‐2 HMPA ⋅ SiCl 3 + Cl − ( 3 ). Single crystal X‐ray analyses are reported for the ionized mer ‐3 HMPA ⋅ SiCl 3 + HCl 2 − and the neutral trans ‐2 HMPA ⋅ SiCl 4 complexes.