The New λ6Si‐Silicate Dianion [Si(NCO)6]2−: Synthesis and Structural Characterization of [K(18‐crown‐6)]2[Si(NCO)6] |
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| Authors: | Oliver Seiler Christian Burschka Kathrin Götz Martin Kaupp Stefan Metz Reinhold Tacke Prof Dr |
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| Institution: | 1. Würzburg, Institut für Anorganische Chemie der Universit?t;2. Würzburg, Institut für Anorganische Chemie der Universit?tUniversit?t Würzburg, Institut für Anorganische Chemie, Am Hubland, D‐97074 Würzburg, Germany, Fax: (+49)931‐888‐4609 |
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| Abstract: | The λ6Si‐silicate K(18‐crown‐6)]2Si(NCO)6] ( 10 ) was synthesized by treatment of Si(NCO)4 with KNCO in the presence of 18‐crown‐6. Compound 10 (SiN6 skeleton) is the first example of a hexa(cyanato‐N)silicate. It was characterized by solid‐state and solution NMR spectroscopy, and the acetonitrile solvate 10· 2CH3CN was studied by single‐crystal X‐ray diffraction. To differentiate between the two isomeric Si(NCO)6]2? and Si(OCN)6]2? dianions, computational studies were performed. |
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| Keywords: | Computationalstudies Cyanato‐N ligand Hexacoordination Silicate dianion Silicon Solid‐state structure |
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