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Synthesis, characterization and molecular structures of monomeric selenolato complexes of mercury with nitrogen-containing chelating ligands

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Title Synthesis, characterization and molecular structures of monomeric selenolato complexes of mercury with nitrogen-containing chelating ligands
 
Creator KAUR, R
SINGH, HB
PATEL, RP
KULSHRESHTHA, SK
 
Subject chalcogenolato complexes
crystal-structures
derivatives
cadmium
decomposition
precursors
thiolate
zinc
 
Description Intramolecularly stabilized divalent mercury selenolates of empirical formula Hg(SeR)(2) [R = 2-Me(2)NCH(2)C(6)H(4) 1, (S)-2-Me(2)NCHMeC(6)H(4)2,(R,S)-(C5H5)Fe(2-Me(2)NCHMeC(5)H(3)) 3 and (S,R)-(C5H5)Fe(2-Me(2)NCHMeC(5)H(3)) 4] have been synthesized in high yield by treating the corresponding diselenides with elemental mercury. The compounds show excellent solubility in non-polar solvents. They were characterized by elemental analysis, H-1, C-13, Se-77 NMR, IR, Fourier-transform Raman and mass spectral techniques. The single-crystal structures of 1 and 4 were determined. Both are monomeric and the Hg atom is four-co-ordinate, being bound to a pair of chelating aminoselenolate ligands with both the six-membered rings having Se-Hg-N co-ordination adopting an envelope conformation. The bond configuration about Hg in 1 can be approximated to distorted tetrahedral, while in 4 it is more square planar with the two Se atoms being mutually trans and the Se-Hg-Se angle 168.6(2)degrees. Compounds 1 and 2 vaporize without decomposition at atmospheric pressure and decompose at higher temperatures to give HgSe while 3 decomposes to HgSe.
 
Publisher ROYAL SOC CHEMISTRY
 
Date 2011-08-28T21:37:05Z
2011-12-26T12:58:13Z
2011-12-27T05:47:47Z
2011-08-28T21:37:05Z
2011-12-26T12:58:13Z
2011-12-27T05:47:47Z
1996
 
Type Article
 
Identifier JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, (4), 461-466
0300-9246
http://dx.doi.org/10.1039/dt9960000461
http://dspace.library.iitb.ac.in/xmlui/handle/10054/11852
http://hdl.handle.net/10054/11852
 
Language en