TRANSITION-METAL COMPLEXES OF OXAMIDE OXIME .1. SYNTHESIS AND X-RAY CRYSTAL-STRUCTURE OF TRIS(OXAMIDE OXIME-N-1,N-1')COBALT(III) TRIIODIDE [CO(H(2)OXAO)(3)]I-3

Tris(oxamide oxime-N-1,N-1')cobart(III) triiodide, [Co(H(2)oxao)(3)]I- 3, has been synthesized, and its structure determined by single crysta l X-ray diffraction at room temperature. The trigonal structure (rhomb ohedral space group R (3) over bar c) was refined by full matrix least -squares to a final R (R(w)) of 4.1 (3.5)% for 51 parameters and 911 o bserved independent reflections. The structure consists exclusively of quasi-octahedral chiral cobaloxime cations, [Co(H(2)oxao)(3)](3+), an d iodide anions. This structure is isotypic to that of the homologous Ni-based salt analyzed previously in which, as a matter of specific di fference, one H2O molecule of crystallization per formula unit is pres ent. Moreover, whereas nickel in the latter salt was identified as Ni- II on the basis of magnetic data, preliminary voltammetric data clearl y reveals Co-III in the present salt.