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Synthesis and Structural Characterization of Neutral Higher‐Coordinate Silicon (iv) Complexes with Tridentate Dianionic Chelate Ligands
Author(s) -
Seiler Oliver,
Burschka Christian,
Metz Stefan,
Penka Martin,
Tacke Reinhold
Publication year - 2005
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.200500296
Subject(s) - hexacoordinate , chemistry , silane , denticity , silicon , ligand (biochemistry) , tetra , stereochemistry , chelation , crystallography , center (category theory) , octahedron , nuclear magnetic resonance spectroscopy , crystal structure , medicinal chemistry , inorganic chemistry , organic chemistry , receptor , biochemistry
Abstract The neutral pentacoordinate silicon (iv) complexes 8 and 9 with an Si O 2 N 3 skeleton and the neutral hexacoordinate silicon (iv) complex 10⋅ 1/2 CH 3 CN with an Si O 4 N 2 skeleton were synthesized, starting from tetra(cyanato‐ N )silane or tetra(thiocyanato‐ N )silane. Compounds 8 and 9 contain one tridentate dianionic ligand derived from 4‐[(2‐hydroxyphenyl)amino]pent‐3‐en‐2‐one and two monodentate singly charged cyanato‐ N or thiocyanato‐ N ligands bound to the silicon (iv) coordination center, whereas the silicon (iv) center of 10 is coordinated by two of these tridentate dianionic ligands. All compounds were characterized by single‐crystal X‐ray diffraction and solid‐state and solution NMR spectroscopy. To get more information about the stereochemistry of the compounds studied, the experimental investigations were complemented by computational studies.