Issue 21, 2007

Solid state structure and solution behaviour of organoselenium(ii) compounds containing 2-{E(CH2CH2)2NCH2}C6H4 groups (E = O, NMe)

Abstract

Cleavage of the Se–Se bond in [2-{O(CH2CH2)2NCH2}C6H4]2Se2 (1) and [2-{MeN(CH2CH2)2NCH2}C6H4]2Se2 (2) by treatment with SO2Cl2, bromine or iodine (1 : 1 molar ratio) yielded [2-{O(CH2CH2)2NCH2}C6H4]SeX [X = Cl (3), Br (4), I (5)] and [2-{MeN(CH2CH2)2NCH2}C6H4]SeI (6). The compounds were characterized in solution by NMR spectroscopy (1H, 13C, 15N, 77Se, 2D experiments). The solid-state molecular structures of 1–3, 4·HBr, 5 and 6 were established by single crystal X-ray diffraction. In all cases T-shaped coordination geometries, i.e. (C,N)SeSe (1, 2), (C,N)SeX (3, 5, 6; X = halogen) or CSeBr2 (4·HBr), were found. Supramolecular associations in crystals based on hydrogen contacts are discussed.

Graphical abstract: Solid state structure and solution behaviour of organoselenium(ii) compounds containing 2-{E(CH2CH2)2NCH2}C6H4 groups (E = O, NMe)

Supplementary files

Article information

Article type
Paper
Submitted
20 Feb 2007
Accepted
02 Apr 2007
First published
23 Apr 2007

Dalton Trans., 2007, 2187-2196

Solid state structure and solution behaviour of organoselenium(II) compounds containing 2-{E(CH2CH2)2NCH2}C6H4 groups (E = O, NMe)

M. Kulcsar, A. Beleaga, C. Silvestru, A. Nicolescu, C. Deleanu, C. Todasca and A. Silvestru, Dalton Trans., 2007, 2187 DOI: 10.1039/B702629C

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