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Syntheses, characterization and anti‐microbial activities of palladium(II) and palladium(IV) complexes of 3,10‐C‐ meso ‐Me 8 [14]diene (L 1 ) and its reduced isomeric anes (L A , L B and L C ). Crystal and molecular structure of [PdL 1 ][Pd(SCN) 4 ]
Author(s) -
Roy Tapashi G.,
Hazari Saroj K. S.,
Barua Kanak K.,
Kim Dong Il,
Park Yu Chul,
Tiekink Edward R.T.
Publication year - 2008
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.1451
Subject(s) - chemistry , palladium , monoclinic crystal system , octahedron , crystal structure , crystallography , stereochemistry , diene , medicinal chemistry , catalysis , organic chemistry , natural rubber
The reactions of 3,10‐C‐ meso ‐3,5,7,7,10,12,14,14‐octamethyl‐1,4,8,11‐tetraazacyclotetradecadiene, L 1 , and two isomers (L B and L C , differing in the orientation of methyl groups on the chiral carbon atoms) of its reduced form with PdCl 2 and K 2 [Pd(SCN) 4 ], produce square‐planar tetrachloro‐ and tetrathiocyano‐palladium(II) complexes of general formulae [PdL′][PdCl 4 ] and [PdL′][Pd(SCN) 4 ] (L′ = L 1 , L B and L C ), respectively. By contrast, the third ane isomer, L A , upon reaction with the same reagents, PdCl 2 and K 2 [Pd(SCN) 4 ], formed octahedral tetrachloro‐ and tetrathiocyanato‐palladium(IV) complexes [PdL A Cl 2 ]Cl 2 and [PdL A (SCN) 2 ](SCN) 2 , respectively. The [PdL′][PdCl 4 ] and [PdL A Cl 2 ]Cl 2 complexes undergo substitution reactions with KSCN to form square‐planar and octahedral tetrathiocyanato complexes [PdL′][Pd(SCN) 4 ] and [PdL A (SCN) 2 ](SCN) 2 , respectively. All complexes have been characterized on the basis of analytical, spectroscopic, conductometric and magnetochemical data. The anti‐fungal and anti‐bacterial activities of these complexes have been studied against some phytopathogenic fungi and bacteria. The crystal structure of [PdL 1 ][Pd(SCN) 4 ] has been confirmed by X‐ray crystallography and shows with square‐planar PdN 4 and PdS 4 geometries [monoclinic, space group C 2/ c , a = 17.884(3) Å, b = 14.734(2) Å, c = 11.4313(18) Å, β = 104.054(5)° ]. Copyright © 2008 John Wiley & Sons, Ltd.