Synthesis and structure of di-aqua-bis-(nicotinamide-κ<i>O</i>)bis-(nitrato-κ² <i>O</i>,<i>O</i>')calcium(II).

ABSTRACT: The title complex, [Ca(NO₃)₂(C₆H₆N₂O)₂(H₂O)₂], crystallizes with an eight-coordinate Ca²⁺ ion in a distorted trigonal-dodeca-hedral coordination environment. The metal ion is coordinated to two nicotinamide ligands via their carbonyl O atoms, two bidentate nitrate anions and two water mol-ecules. The nicotinamide ligands adopt a nearly trans geometry, while the nitrate anions and aqua ligands are arranged in a pseudo-trans fashion. In the crystal, a three-dimensional supra-molecular framework is constructed through N-H⋯O and O-H⋯O hydrogen bonds involving water, nitrate, and nicotinamide functional groups, reinforced by offset π-π stacking inter-actions between nearly par

SUBMITTER: Djumanazarova Z 

PROVIDER: S-EPMC12412687 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature