576 J. P. COLLMAN, R. P. BLAIR,R. L. MARSHALL, AND L. SLADE
Inorganic Chemistry
magnetic moment which would seem to preclude the of low intensity suggestive of centrosymmetric Ni(I1). possibility of tetrahedral Cu(I1). The spectrum (Table Two possibilities exist here. The complex could be 11) is in accord with those of known planar Cu(I1) tetragonal due to bidentate nitrate groups1?or could be complexes, though a highly distorted tetragonal coma radically distorted tetrahedral (i e . , D2d) structure. plex involving bidentate nitrate groups cannot be posiThe spectrum of the compound is very similar to that tively rejected. The compound gives a spectrum simireported for N ~ ( N O & . ~ ( C O H ~ )for ~PO which ' ~ a D2
