Zur Kenntnis der polymeren Achtringstruktur des Kupfer(II)-dichlorophosphats

Note on the polymeric 8-ring structure of copper(II) dichlorophosphate According to the vibrational spectrum, the Cu atoms in Cu(O₂PCl₂)₂ are linked to a polymeric 8-ring structure by O? P? O bridges resulting in a square planar coordination of Cu²⁺. From the EPR spectrum a canting angle 2γ? 104° between adjacent CuO₄ planes can be deduced as an additional information. The EPR powder data are discussed with respect to an alternative structural model: 2γ may be located either within each polymeric Cu(II) complex resulting in a strongly corrugated chain structure, or all CuO₄ planes of a chain may run parallel; 2γ then ought to be the angle between the CuO₄ planes of different chains.