New stable germylenes, stannylenes, and related compounds. 8. Amidogermanium(II) and -tin(II) chlorides R2N-E14-Cl (E14 = Ge, R = Et; E14 = Sn, R = Me) revealing new structural motifs
✍ Scribed by Victor N. Khrustalev; Ivan V. Glukhov; Irina V. Borisova; Nikolay N. Zemlyansky
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 226 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0268-2605
- DOI
- 10.1002/aoc.1252
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✦ Synopsis
Abstract
New stable amidogermanium(II) and ‐tin(II) chlorides R~2~NE^14^Cl [E^14^ = Ge, R = Et (1), E^14^ = Sn, R = Me (2)] have been synthesized and their crystal structures have been determined by X‐ray diffraction analysis. Both 1 and 2 are dimers formed via the two intermolecular E^14^← N dative interactions, with the bridged amido ligands and the terminal chloro ligands. The central E^14^~2~N~2~ four‐membered ring has a butterfly conformation in the germanium derivative 1 and a planar conformation in the tin derivative 2. The chloride atoms are disposed in the trans‐configuration relative to the four‐membered ring. Both structures 1 and 2 reveal new previously unobserved structural motifs for amidogermanium(II) and ‐tin(II) chlorides, respectively. The electronic structures of 1 and 2 were studied by quantum chemistry within the DFT approach. Copyright © 2007 John Wiley & Sons, Ltd.