Ni3(Bo3)2

The compound Ni3(BO3)2 is made up of nickel ions (Ni2+) and borate ions (BO33-). The compound has a rhombohedral crystal structure, meaning it has six faces that are all congruent rhombuses. The borate ions form a three-dimensional network through sharing oxygen atoms, while the nickel ions occupy the interstitial sites in the structure.

Each borate ion has three oxygens bonded to the central boron atom, and each oxygen is also bonded to another boron atom in the network. The borate network creates channels that run parallel to the crystallographic c-axis. The nickel ions occupy two types of interstitial sites, labeled as M1 and M2 sites. The M1 site has a coordination number of four and is surrounded by four oxygen atoms from different borate ions. The M2 site has a coordination number of six and is surrounded by six oxygen atoms from different borate ions.

Ni3(BO3)2 is a diamagnetic compound, meaning it does not possess a permanent magnetic moment. It has a high thermal stability and can be used as a host material for various optoelectronic applications.