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In the title complex, [Cu 4 Cl 4 (C 58 H 52 N 2 P 4 )]  n  , four Cu II  atoms are held together  via  two doubly bridging and two triply bridging chlorides, forming a stair-like Cu 4 Cl 4  core having crystallographically imposed inversion symmetry, while the benzene-1,4-diamine ligand (with a crystallographic inversion center at the centroid) acts in a tetra­dentate coordination mode, bridging two adjacent Cu 4 Cl 4  cores, resulting in a chain along the  a -axis direction. One Cu atom has a distorted tetra­hedral geometry, coordinated by one P atom, one μ 2 -Cl and two μ 3 -Cl atoms, while the second Cu atom adopts a trigonal geometry, coordinated by one P atom, one μ 2 -Cl and one μ 3 -Cl atoms.

acta crystallographica. section e

Poly[di-μ3-chlorido-di-μ2-chlorido-{μ4-N,N,N′,N′-tetrakis[(diphenylphosphanyl)methyl]benzene-1,4-diamine-κ4P:P′:P′′:P′′′}tetracopper(II)]