Novel Layered Copper Phosphoramidate, Which Contains Six-Membered Rings Made of Five Different Elements

Copper(II) perchlorate and (PhCONH)P(O)(OH)2 (H2bpa) react in
methanol to yield [Cu(Hbpa)2]n, a novel layered solid that displays
several interesting features. Unlike the previously reported copper
phosphonates, a rare hexacoordination around the metal is
observed in the title compound because of the amide CO
coordination to Cu in addition to the phosphoramidate P−O
coordination. The six-membered chelate rings present in the title
compound are made up of five different elements (Cu, P, C, N,
and O).