Heterocyclic cations with delocalised pi-systems and short intramolecular sulfur ... Sulfur contacts: The structures of two derivatives of the 2-(1,3-dithiol-2-ylidenemethyl)-1,3-dithiolium cation

Ozturk, Turan and Povey, David C. and Wallis, John D. (1997) Heterocyclic cations with delocalised pi-systems and short intramolecular sulfur ... Sulfur contacts: The structures of two derivatives of the 2-(1,3-dithiol-2-ylidenemethyl)-1,3-dithiolium cation. Phosphorus Sulfur and Silicon and the Related Elements, 122 . pp. 313-324. ISSN 0308-664X. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1080/10426509708043520

Abstract

The effective size of bonded divalent sulfur in S...S contacts is a function of the orientation of the groups, with the shortest contacts occurring when the groups are coplanar. A lower limit for the latter is indicated by the structures of the 2-(1,3-benzodithiol-2-ylidenemethyl)-1,3-benzodithiolium and 2-(1,3-dithiolan-2-ylidenemethyl)-1,3-dithiolanium cations, 2 and 3. These show almost mm symmetry with all four sulfur atoms involved in stabilisation of the positive charge. Short intramolecular sulfur...sulfur contact distances, 0.5-0.7 Angstrom within the sum of traditional van der Waals radii, and maximised by in-plane angular distortions, indicate a lower limit to the effective size of the bonded divalent sulfur atom of ca. 1.45 Angstrom.

Item Type: Article
Uncontrolled keywords: 2-(1,3-benzodithiol-2-ylidenemethyl)-1,3-benzodithiolium 2-(1,3-dithiolan-2-ylidenemethyl)1,3-dithiolanium; atomic size; X-ray; van der Waals radius molecular structure
Subjects: Q Science
Q Science > QD Chemistry
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences
Depositing User: M.A. Ziai
Date Deposited: 22 Sep 2009 14:32
Last Modified: 25 Jun 2014 11:25
Resource URI: https://kar.kent.ac.uk/id/eprint/18228 (The current URI for this page, for reference purposes)
  • Depositors only (login required):