Record Details

Synthesis, characterisation and reactions of bis[2(dimethylaminomethyl)phenyl] diselenide: Its structure and that of [2-(dimethylaminomethyl)phenyl]selenium bromide

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Synthesis, characterisation and reactions of bis[2(dimethylaminomethyl)phenyl] diselenide: Its structure and that of [2-(dimethylaminomethyl)phenyl]selenium bromide
 
Creator KAUR, R
SINGH, HB
PATEL, RP
 
Subject glutathione-peroxidase
coordination chemistry
molecular-structures
complexes
crystal
ligands
spectroscopy
selenium
alkenes
rings
 
Description Bis[(2-dimethylaminomethyl)phenyl] diselenide (RSe)(2) was obtained by the organolithium route. It underwent facile reaction with stoichiometric amounts of bromine and iodine to give the corresponding arylselenium halides RSeBr and novel RSeI in which the selenium is covalently bonded to iodine. With an excess of bromine it gave the corresponding tribromide RSeBr(3) but a similar reaction with iodine gave only RSeI. With diazomethane it gave the selenoether (RSe)(2)CH2 and with HCl the known bis(hydrochloride) (RSe)(2) . 2HCl. A catalytic conversion of alkenes into allylic acetates using (RSe)(2) was carried out. The compounds were characterised by elemental analyses, mass, multinuclear NMR (H-1, C-13, Se-77), IR, Fourier-transform-Raman spectrometry and conductance measurements. The compound RSeBr(3) shows evidence for the existence of Se ... N interaction in solution and was found to equilibrate between co-ordinated and non-co-ordinated forms. The structures of the diselenide (RSe)(2) and its bromo derivative RSeBr were determined by X-ray crystallography. The compounds are isostructural and exhibit Se ... N intramolecular co-ordination. The Se atom has T-shaped three-co-ordination in both structures and the five-membered chelate rings formed by the Se, C and N atoms are puckered and exist in an envelope conformation. The Se ... N interaction in RSeBr [Se-N 2.143(6) Angstrom] is, however, considerably stronger than that in (RSe)(2)[Se(1)-N(1) 2.856(3), Se(2)-N(2) 2.863(4) Angstrom].
 
Publisher ROYAL SOC CHEMISTRY
 
Date 2011-08-28T21:25:51Z
2011-12-26T12:58:13Z
2011-12-27T05:47:47Z
2011-08-28T21:25:51Z
2011-12-26T12:58:13Z
2011-12-27T05:47:47Z
1996
 
Type Article
 
Identifier JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, (13), 2719-2726
0300-9246
http://dx.doi.org/10.1039/dt9960002719
http://dspace.library.iitb.ac.in/xmlui/handle/10054/11850
http://hdl.handle.net/10054/11850
 
Language en