Abstract: | The title compound, [Ni(BMTT)2], where BMTT is 1,3‐bis(2‐methyltetrazol‐5‐yl)triazenide (C4H6N11), presents a molecular complex with tridentate ligands. The tridentate mode of the ligand is realised through the central N atom of the triazene group and two N atoms of the two tetrazole rings. The [Ni(BMTT)2] molecule is the meridional isomer, with crystallographic symmetry in space group P42/n. The nickel centre has a distorted octahedral environment, with two axial Ni—N bonds of 2.041 (2) Å and four equatorial Ni—N bonds of 2.0739 (14) Å. The molecules are linked together by van der Waals interactions only. |