Tetrakis(triethylenediamin-1-ium) dodeca-μ2-chlorido-hexakis(thiocyanato-κN)hexa-octahedro-niobate

Abstract

The crystal structure of the cluster complex salt, (C6H13N2)4[Nb6(NCS)6Cl12] or (H-DABCO)4[Nb6Cl12(NCS)6] (DABCO = triethylenediamine or 1,4-diazabicyclo[2.2.2]octane), comprises octahedral Nb6 cluster cores, which are μ2-coordinated by 12 chloride ligands (bridging the octahedral edges, inner ligand sphere). Furthermore, each Nb atom is N-bonded to a terminal thiocyanate ligand (outer ligand sphere). The discrete clusters carry a charge of −4, which is compensated by four monoprotonated DABCO molecules. These are arranged in rows, which are N—H...Cl and N—H...N hydrogen bonded to the anions and among each other.

Keywords

• crystal structure
• niobium
• cluster
• chloride
• dabco