On thio-substituted N-heterocyclic arsines

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Bender , J , Skowronska , A , Dolega , A , Nieger , M & Gudat , D 2021 , ' On thio-substituted N-heterocyclic arsines ' , Zeitschrift für anorganische und allgemeine Chemie , vol. 647 , no. 5 , pp. 534-539 . https://doi.org/10.1002/zaac.202100006

Title: On thio-substituted N-heterocyclic arsines
Author: Bender, Johannes; Skowronska, Agnieszka; Dolega, Anna; Nieger, Martin; Gudat, Dietrich
Contributor organization: Department of Chemistry
Date: 2021-03-11
Language: eng
Number of pages: 6
Belongs to series: Zeitschrift für anorganische und allgemeine Chemie
ISSN: 0044-2313
DOI: https://doi.org/10.1002/zaac.202100006
URI: http://hdl.handle.net/10138/328081
Abstract: Metathesis of N-heterocyclic chloroarsines with sulfur-based nucleophiles furnished thio-substituted 1,3,2-diazarsolidines and 1,3,2-diazarsolenes. Crystallographic and NMR spectroscopic studies revealed that a thiocyanato-diazarsolene exhibits a salt-like structure composed of weakly interacting thiocyanate and arsenium ions, while the remaining products formed neutral molecules. The structural data indicate that the heterocyclic framework induces an elongation of exocyclic As-S bonds that is more prominent in diazarsolenes than in diazarsolidines and parallels the bond polarisation effect established for N-heterocyclic phosphines. The NMR data suggest that diazarsolenes undergo facile inversion of the pyramidal configuration at arsenic, which was successfully modelled by DFT studies.
Subject: arsenic
sulfur
nitrogen heterocycles
inversion
116 Chemical sciences
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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