Author:
Hoskins BF,McLeod NJ,Schaap HA
Abstract
The structure of the
complex Lcu2Cl2,6H2O (where LH2 is
the tetra-Schiff base macrocycle formed as the
condensation product of propane-1,3-diamine and 2-hydroxy-5-methylisophthal-
aldehyde in the mole ratio 2: 2) was determined by single-crystal X-ray diffraction
methods. The crystals are monoclinic, a
7.720(1), b 17.079(1), c 11.171(1) � and β 91.50(1)�, with
two molecules per unit cell. It has proved difficult to resolve the ambiguity
between the three possible space groups (C2, Cm, and C2/m) and the
initial model has been refined in each using a full-matrix least-squares
method. The space group C2/m seems
the most likely and the structure is described in it; R 0.049 for the 1369
independent reflections measured using counter methods. The structure analysis
has confirmed the anticipated cyclic structure of the ligand with the two
copper atoms held together in a binuclear arrangement by the planar N4O2
donor set; the Cu.. .Cu distance is 3.133(1)�. Each copper atom has a distorted
square-pyramidal environment with the apical position of each being occupied by
a chlorine atom; the two chlorine atoms are on the opposite sides of the macrocycle. The water molecules are not coordinated, but
form an extensive system of hydrogen bonding throughout the crystal with discrete
binuclear molecules of the LCu2Cl2 complex.
Cited by
77 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
1. A novel single-pot synthesis of dinuclear and mononuclear copper(II) complexes with sterically demanding Schiff bases: Structural, spectral, magnetic, electrochemical, DNA binding and theoretical investigation;Journal of Molecular Structure;2021-05
2. Synthesis, crystal structures, spectral, electrochemical and magnetic properties of di-µ-phenoxido-bridged dinuclear copper(II) complexes with N-salicylidene-2-hydroxybenzylamine derivatives: axial coordination effect of dimethyl sulphoxide molecule;Chemical Papers;2014-01-01
3. Synthesis and crystal structure of a trinuclear copper(II) complex derived from N,N′-Bis(4-methoxysalicylidene)-1,3-pentanediamine;Russian Journal of Coordination Chemistry;2013-11
4. Synthetic macrocyclic chemistry studies in Australia and New Zealand from 1962 to 1987;Supramolecular Chemistry;2012-07-01
5. Synthesis, spectral characterization and in vitro microbiological evaluation of novel glyoxal, biacetyl and benzil bis-hydrazone macrocyclic Schiff bases and their Co(II), Ni(II) and Cu(II) complexes;Polyhedron;2011-05