Two Ternary NiII Complexes: Bisglycinato(1,10-phenanthroline)nickel(II) Trihydrate and Bisglycinato(2,2'-bipyridine)nickel(II) Trihydrate

Abstract

The two title compounds, [Ni(C 2 H 4 NO 2 ) 2 (C 12 H 8 N 2 )].3H 2 O and [Ni(C 2 H 4 NO 2 ) 2 (C 10 H 8 N 2 )].3H 2 O, are isostructural. Their structures consist of discrete complex molecules, together with water molecules of crystallization. All ligands are bidentate and the coordination polyhedron is a distorted octahedron. Distinct segregation of hydrophilic and hydrophobic regions appears along the c axis. In the hydrophilic region a three-dimensional network of hydrogen bonds is formed involving principally the water molecules. Aromatic interactions exist in the hydrophobic region