Abstract
In the title complex, [CuCl2(C6H7N)2(CH3OH)], the copper atom is five-coordinated by two nitro-gen atoms of 2-methyl-pyridine ligands, two chloro ligands and an oxygen atom of the methanol mol-ecule, being in a tetra-gonal-pyramidal environment with N and Cl atoms forming the basal plane. In the crystal, complex mol-ecules related by the twofold rotation axis are joined into dimeric units by pairs of O-H⋯Cl hydrogen bonds. These dimeric units are assembled through C-H⋯Cl inter-actions into layers parallel to (001).
Highlights
In the title complex, [CuCl2(C6H7N)2(CH3OH)], the copper atom is fivecoordinated by two nitrogen atoms of 2-methylpyridine ligands, two chloro ligands and an oxygen atom of the methanol molecule, being in a tetragonal– pyramidal environment with N and Cl atoms forming the basal plane
Complex molecules related by the twofold rotation axis are joined into dimeric units by pairs of O—HÁ Á ÁCl hydrogen bonds
These dimeric units are assembled through C—HÁ Á ÁCl interactions into layers parallel to (001)
Summary
Both organic (from simple molecules to peptides and proteins) and inorganic complexes have been known for more than a century and are central to modern chemistry because of their fascinating, aesthetic architectures and multiple applications (Gan et al, 2011; Gellman, 1998; Thorat et al, 2013; Vijayadas et al, 2013; Ziach et al, 2018). There are many reports of coordination complexes where solvent molecules are located in the voids of the crystal structure. Reports describing the replacement of coordinated solvent molecules with other molecules are relatively scarce. A literature survey revealed that coordination complex aquadichlorobis(2-methylpyridine)copper(II) had been reported (Marsh et al, 1982). Our interest was to see whether we could replace the coordinated water molecule in the complex with other solvent molecules such as methanol or ethanol via single-crystal-to-single-crystal transition (SCSCT) to investigate the structural changes. We could not succeed in SCSCT of the complex, we were successful in synthesizing the methanol-coordinated copper complex incorporating 2-methylpyridine as reported . Symmetry codes: (i) Àx þ 1; y; Àz þ 12; (ii) x À 12; y þ 12; z
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