Communications to the Editor 2933 the N2C5CI4 molecule is not known. The Ir-N(l) (1.819,1.794 Á) and N(l)-N(2) (1.171,1.159 Á) distances, while similar, are consistent with less it back-bonding from metal to atom N(l) in the N2R species.We believe that the route to a variety of metal-NaR complexes described here is general one and that the comparative reaction and structural chemistry of these complexes and their CO, NO+, and N2Ph+ analogues will prove to be diverse and interesting.
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