C–H···Onitrate synthon assisted molecular assembly of hydrogen bonded Ni(II) and Cu(II) complexes
摘要:
Two Schiff base metal complexes [Cu-SPETNNO3 (1) and Ni-SPETNNO3 (2) [SPETN=2,2-[propane,1,3-diylbis(nitrilomethyldyne)pyridyl,phenolate]] with hydrogen bonding groups have been synthesized and characterized by single-crystal X-ray diffraction. In both of the compounds nitrates occupy a crystallographic general position. In 1 the lattice nitrates are on the 2(1) screw axis while in 2 they are at the crystallographic inversion center. C-HOnitrate synthons (formed by the nitrate anions and peripheral hydrogen bonding groups of the metal complexes) are non-covalent building blocks in molecular-assembly and packing of the cationic Schiff base metal complexes (M=Ni2+, Cu2+), resulting in 2-D hydrogen bonded networks. The CuCu non-bonding contact in 1 is 3.268 angstrom while the Ni-Ni bonding distance in 2 is 3.437 angstrom.
Unsymmetrical ligand complexes of Cu II , Ni II , and Co II derived from salicylaldehyde and 1,3-propanediamine with either pyridine-2-carbaldehyde or pyrrole-2-carbaldehyde
作者:Philip J. Burke、David R. McMillin
DOI:10.1039/dt9800001794
日期:——
condensates of salicylaldehyde, propanediamine, and eitherpyrrole-2-carbaldehyde (L1) or pyridine-2-carbaldehyde (L2) have been isolated and combined with selected first-row transition-metal ions. The copper(II) and nickel(II) complexes of L1 have been prepared and characterized, as has the pyridine adduct of the corresponding cobalt(II) derivative. The copper(II) and nickel(II) complexes of L2 have also