Aqua(2,2′-bipyridine-κ2N,N′)(2-methylmalonato-κ2O1,O3)copper(II) dihydrate

P Manochitra,P Sambasiva Rao,R Sreeshailam,S Murugavel,N Manikandan

doi:10.1107/s1600536812024889

P Manochitra, P Sambasiva Rao + Show 3 more

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https://doi.org/10.1107/s1600536812024889

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Abstract

In the title compound, [Cu(C4H4O4)(C10H8N2)(H2O)]·2H2O, the CuII ion displays a slightly distorted square-pyramidal coordination. The water molecule at the apical position shows a long bond [Cu—O = 2.276 (2) Å]. The basal plane is formed by two N atoms of the 2,2′-bipyridine ligand and two carboxylate O atoms from a malonate group. The five-membered chelate ring is almost planar [maximum deviation = −0.006 (2) Å], while the six-membered chelate ring defined by the malonate ligand adopts a distorted boat conformation. In the crystal, CuII complex molecules and lattice water molecules are connected by O—H⋯O and C—H⋯O hydrogen bonds. The crystal packing is further stabilized by π–π interactions [centroid–centroid distances = 3.563 (2)–3.828 (2) Å].

Highlights

In the title compound, [Cu(C4H4O4)(C10H8N2)(H2O)]2H2O, the CuII ion displays a slightly distorted square-pyramidal coordination
The basal plane is formed by two N atoms of the 2,20 -bipyridine ligand and two carboxylate O atoms from a malonate group
0.006 (2) Å], while the six-membered chelate ring defined by the malonate ligand adopts a distorted boat conformation

Summary

Crystal data

Sambasiva Raoa a Department of Chemistry, Pondicherry University, Puducherry 605 014, India, Department of Physics, Bharathidasan Engineering College, Nattrampalli, Vellore. 635 854, India, and cDepartment of Physics, Thanthai Periyar Government Institute of Technology, Vellore 632 002, India. In the title compound, [Cu(C4H4O4)(C10H8N2)(H2O)]2H2O, the CuII ion displays a slightly distorted square-pyramidal coordination. The water molecule at the apical position shows a long bond [Cu—O = 2.276 (2) Å]. The basal plane is formed by two N atoms of the 2,20 -bipyridine ligand and two carboxylate O atoms from a malonate group. The fivemembered chelate ring is almost planar [maximum deviation =. 0.006 (2) Å], while the six-membered chelate ring defined by the malonate ligand adopts a distorted boat conformation. CuII complex molecules and lattice water molecules are connected by O—H O and C—H O hydrogen bonds.

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