Geometrical isomers of ortho-substituted bis(triazene 1-oxide) chelates ofpalladium(II)

Authors
Pal, CK Chakraborty, P Chakravorty, A
Citation
Ck. Pal et al., Geometrical isomers of ortho-substituted bis(triazene 1-oxide) chelates ofpalladium(II), I J CHEM A, 40(7), 2001, pp. 675-677
Citations number
13
Categorie Soggetti
Chemistry
Journal title
INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY
ISSN journal
03764710 → ACNP
Volume
40
Issue
7
Year of publication
2001
Pages
675 - 677
Database
ISI
SICI code
0376-4710(200107)40:7<675:GIOOB1>2.0.ZU;2-B
Abstract
Bis(1-methyl-3(o-tolyl)triazene-l-oxido) (PdL2), has been synthesized from Na2PdCl4 and HL and chromatographically separated into trans and cis forms which have been structurally characterized. The trans isomer is centrosymme tric. The chelate rings are excellently planar in both isomers. The pendent aromatic rings in the cis isomer make a dihedral angle of only 15.6 degree s suggesting the presence of some pi-pi interaction between them. Upon melt ing the cis isomer it is spontaneously converted to the trans form.