Molecular and Crystal Structure of the Tetrakis(4-Methyl-1H- Pyrazole)-bis(acetato)Nickel(II)

Ligands with multiple coordination sites are often used in the synthesis of the extended metallo-organic structures. Both pyrazolyl and acetato ligands can have a role of a ''bridge'' between the metallo-organic fragments. As a part of the study of the coordination capabilities of pyrazole-based ligands we are reporting the molecular and crystal structure of the tetrakis(4-methyl-1H-pyrazole)-bis(acetato)Nickel(II). The asymmetric unit contains two halves of the title molecule with nickel (II) ions sitting on inversion centers. Four 4-methyl-pyrazole and two acetato ligands are coordinated to Ni (II) in a distorted octahedral geometry. Deviations from ideal octahedral geometry are associated with acetato ligands involved in intramolecular hydrogen bonds. ; Published in Bulletin of the Chemists and Technologistsof Bosnia and Herzegovina as Special Issue (2024).