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A new nickel(II) complex with N,N′-tetraethyl-N″-benzoylphosphortriamide (HL = C 6 H 5 C(O)N(H)P(O)(NEt 2 ) 2 ) of composition Ni 4 L 4 (OCH 3 ) 4 ·(HOCH 3 ) 4  (1) has been synthe­ sized. The crystal and molecular structure of 1 has been determined from the X-Ray diffraction data (tetragonal, space group P4̄2 1 c with a = 17.000(2) Å, c = 15.338(3) Å, Z = 2; R = 0.0399 for 1412 unique reflections). The structure is made up of cubane-like tetramers. In the corners of a cube there are 4 atoms of nickel and 4 atoms of oxygen of methoxy groups. The nickel atoms are characterized by a slightly distorted octahedral environment, which consists of three oxygen atoms of methoxy groups, carbonylic and phosphorylic oxygen atoms of the ligand L - , and an oxygen atom of a methanol molecule. The ligands L -  coordinate to the metal ion forming a chelate via the oxygen atoms of carbonylic and phosphorylic groups.

Synthesis, IR and X-Ray Studies of Tetra(N,N′-tetraethyl-N″-benzoyl- phosphorictriamide)-tetra(μ-3-methoxo)-tetra(methanol)tetra-NickeI(II)