Tetra-aqua-bis(pyridine-3-sulfonato-κN)nickel(II)

Abstract

In the mol-ecule of the title compound, [Ni(C(5)H(4)NO(3)S)(2)(H(2)O)(4)], the Ni(II) cation is located on an inversion center and is coordinated by four water mol-ecules and two pyridine-3-sulfonate anions with an NiN(2)O(4) distorted octa-hedral geometry. The face-to-face separation of 3.561 (5) Å between parallel pyridine rings indicates the existence of weak π-π stacking between the pyridine rings. The structure also contains inter-molecular O-H⋯O hydrogen bonding and weak C-H⋯O hydrogen bonding.

Fig. 1.

The molecular structure of the title compound with 40% probability displacement (arbitrary spheres for H atoms) [symmetry codes: (i)1 - x,1 - y,1 - z].

Fig. 2.

A diagram showing π-π stacking between pyridine rings [symmetry code: (ii) 1 - x,1 - y,-z].