Skoči na glavni sadržaj

Izvorni znanstveni članak

Schiff Base Complexes of Copper(II)

Antony F. Marinovich ; Department of Chemistry, The University of Auckland, Private Bag 92 019, Auckland, New Zealand
R. Shane O’Mahony ; Department of Chemistry, The University of Auckland, Private Bag 92 019, Auckland, New Zealand
Joyce M. Waters ; Chemistry, Institute of Fundamental Sciences, Massey University, Private Bag 102 904, North Shore Mail Centre, Auckland, New Zealand
T. Neil M. Waters ; Chemistry, Institute of Fundamental Sciences, Massey University, Private Bag 102 904, North Shore Mail Centre, Auckland, New Zealand


Puni tekst: engleski pdf 359 Kb

str. 685-703

preuzimanja: 1.300

citiraj


Sažetak

The crystal structures of four Schiff base molecules are presented, one of which is a re-appraisal of a previously reported structure. Crystals of N,N'-1,2-phenylene-bis(salicylideneiminato)copper(II) have been grown from both chloroform and pyridine. The structure from chloroform shows two crystallographically distinct squareplanar molecules per asymmetric unit in an orthorhombic cell, a = 20.159(2), b = 14.918(1), c = 13.329(1) Å; space group Pna21. Two different stereochemistries are observed when pyridine is the solvent. One has square planar geometry and the other square pyramidal with a pyridine molecule bound in the fifth co-ordination site. The space group is P1 with a = 8.748(4), b = 14.499(4), c = 18.725(5) Å, α = 109.93(3), β = 91.99(2), γ = 101.64(3)°. Bis(N-phenyl pyridoxylideneiminato)copper(II) crystallises in a monoclinic cell, space group P21/c, a = 5.7037(6), b = 20.394(1), c = 10.6321(6) Å, β = 101.443(6)° with the trans square planar co-ordination geometry. In the re-appraised structure of aqua(5-phosphopyridoxylidene-DLphenylalanineato) copper(II) the complex is square pyramidal with two oxygen and one nitrogen donor from the ligand. The fourth site is occupied by a water molecule and the fifth, apical donor is a phosphate oxygen from an adjacent molecule. The space group is triclinic P1 with a = 8.697(2), b = 13.039(3), c = 12.418(3) Å, α = 110.49(2), β = 108.61(2), γ = 63.65(10)°.

Ključne riječi

copper(II) complexes; Schiff base complexes; salicylideneiminato complexes; pyridoxal

Hrčak ID:

132265

URI

https://hrcak.srce.hr/132265

Datum izdavanja:

1.9.1999.

Posjeta: 1.772 *