Treatment of Silylene–Phosphinidene with Chalcogens Resulted Exclusively in the Formation of Silicon‐Bonded Chalcogens
| Autor: | Dietmar Stalke, Mujahuddin M. Siddiqui, Samir Kumar Sarkar, Annika Münch, Herbert W. Roesky, Anjana George, Soumen Sinhababu, Regine Herbst-Irmer, Pattiyil Parameswaran |
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| Rok vydání: | 2019 |
| Předmět: |
Silicon
chemistry.chemical_element 010402 general chemistry 01 natural sciences Catalysis chemistry.chemical_compound Chalcogen Atomic orbital phosphinidenes phosphorus Lone pair 010405 organic chemistry Chemistry Communication Organic Chemistry silylene–phosphinidene Silylene silicon Main Group Elements General Chemistry Communications 0104 chemical sciences 3. Good health Crystallography Phosphinidene chalcogens silylene-phosphinidene |
| Zdroj: | Chemistry (Weinheim an Der Bergstrasse, Germany) |
| ISSN: | 1521-3765 0947-6539 |
| DOI: | 10.1002/chem.201902661 |
| Popis: | Chalcogen-bonded silicon phosphinidenes LSi(E)-P-Me cAAC (E=S (1); Se (2); Te (3); L=PhC(NtBu)2 ; Me cAAC=C(CH2 )(CMe2 )2 N-2,6-iPr2 C6 H3 )) were synthesized from the reactions of silylene-phosphinidene LSi-P-Me cAAC (A) with elemental chalcogens. All the compounds reported herein have been characterized by multinuclear NMR, elemental analyses, LIFDI-MS, and single-crystal X-ray diffraction techniques. Furthermore, the regeneration of silylene-phosphinidene (A) was achieved from the reactions of 2-3 with L'Al (L'=HC{(CMe)(2,6-iPr2 C6 H3 N)}2 ). Theoretical studies on chalcogen-bonded silicon phosphinidenes indicate that the Si-E (E=S, Se, Te) bond can be best represented as charge-separated electron-sharing σ-bonding interaction between [LSi-P-Me cAAC]+ and E- . The partial double-bond character of Si-E is attributed to significant hyperconjugative donation from the lone pair on E- to the Si-N and Si-P σ*-molecular orbitals. https://creativecommons.org/licenses/by/4.0/ peerReviewed |
| Databáze: | OpenAIRE |
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