Hexacoordinate Silicon(IV) Complexes Containing Thiocyanato-N Ligands - Syntheses, Structural Characterization, and Computational Studies
The hexacoordinate silicon(IV) complexes [NEt4]2[Si(NCS)6] (2), [K(18‐crown‐6)]2[Si(NCS)6]·2CH3CN (3·2CH3CN), and cis‐[(acac)2Si(NCS)2] (cis‐4; acac = acetylacetonato‐O, O) were synthesized, starting from Si(NCS)4 (1). Compounds 1, 2, 3·2CH3CN, and cis‐4 were structurally characterized in the solid...
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Published in | Zeitschrift für anorganische und allgemeine Chemie (1950) Vol. 629; no. 7-8; pp. 1403 - 1411 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Weinheim
WILEY-VCH Verlag
01.07.2003
WILEY‐VCH Verlag |
Subjects | |
Online Access | Get full text |
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Summary: | The hexacoordinate silicon(IV) complexes [NEt4]2[Si(NCS)6] (2), [K(18‐crown‐6)]2[Si(NCS)6]·2CH3CN (3·2CH3CN), and cis‐[(acac)2Si(NCS)2] (cis‐4; acac = acetylacetonato‐O, O) were synthesized, starting from Si(NCS)4 (1). Compounds 1, 2, 3·2CH3CN, and cis‐4 were structurally characterized in the solid state (13C, 15N (cis‐4 only), and 29Si MAS NMR; crystal structure analyses) and in solution (1H, 13C, and 29Si NMR; cis‐4 only). The experimental investigations were complemented by computational studies (RI‐MP2 geometry optimizations of 1, [Si(NCS)6]2—, cis‐4, and trans‐4; calculations of the 29Si NMR chemical shifts using the optimized structures).
Hexakoordinierte Silicium(IV)‐Komplexe mit Thiocyanato‐N‐Liganden — Synthesen, strukturelle Charakterisierung und theoretische Untersuchungen
Die hexakoordinierten Silicium(IV)‐Komplexe [NEt4]2[Si(NCS)6] (2), [K(18‐Krone‐6)]2[Si(NCS)6]·2CH3CN (3·2CH3CN) und cis‐[(acac)2Si(NCS)2] (cis‐4; acac = Acetylacetonato‐O, O) wurden ausgehend von Si(NCS)4 (1) synthetisiert. Die Verbindungen 1, 2, 3·2CH3CN und cis‐4 wurden im festen Zustand (13C‐, 15N‐ (nur cis‐4) und 29Si‐MAS‐NMR; Kristallstrukturanalysen) und in Lösung (1H‐, 13C‐ und 29Si‐NMR; nur cis‐4) strukturell charakterisiert. Die experimentellen Untersuchungen wurden durch theoretische Studien ergänzt (RI‐MP2‐Geometrieoptimierungen von 1, [Si(NCS)6]2—, cis‐4 und trans‐4; Berechnungen der 29Si‐NMR‐chemischen Verschiebungen für die geometrieoptimierten Strukturen). |
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Bibliography: | Dedicated to Professor Heinrich Nöth on the Occasion of his 75th Birthday ArticleID:ZAAC200300097 ark:/67375/WNG-8276B64K-R istex:1BE87026AAF875898F11F16CEBAFB2BB673CA46E |
ISSN: | 0044-2313 1521-3749 |
DOI: | 10.1002/zaac.200300097 |