The crystal structure of bis(1,3‐Diphenyl‐1,3‐Propanedionato)copper (II)

The crystal structure of bis(1,3‐diphenyl‐1,3‐propanedionato)copper(II), Cu(C 6 H 5 CO.CH · COC 6 H 5 ) 2 , has been determined with the aid of three‐dimensional X‐ray diffraction data. The dimensions of the monoclinic cell are a = 26.18, b = 6.07, c = 16.64 Å, β = 115.3°, Z = 4, and the space group is C2/c. The copper ion has the square configuration with Cu‐O = 1.91 Å and with valency angles close to 90°. The chelate ring is entirely planar, the phenyl rings make small angles (9.3° and 4.6°) to this plane. There is no indication of extensive conjugation between the phenyl groups and the chelate ring system.