Complexes not containing multiply bonded

Complexes of the (ra s-lTcO(OH)] and [TCO2] Cores Oxo-Bridged (Tc203l and Other Binuclear Complexes [TcSl Complexes Nitrido Complexes Imido and Hydrazido Complexes Complexes Not Containing Multiply Bonded Ligands... 

C. Complexes Not Containing Multiply Bonded Ligands XL Appendix Abbreviations... 

For metal-metal bonded complexes that contain multiple bonds, addition of hgands can reduce the bond order but does not have to destroy the metal metal interaction entirely. The reactions shown below are written in the forward direction, which highhghts addition reactions leading to a loss in multiple-bond character. It should be kept in mind that these are often in equilibria, and hgand elimination in the reverse direction can be a source of the multiply bonded species. 

Rhenium compounds in high oxidation states often contain multiply bonded [Re N], [Re 0], and [Re Oj] units. It is clearly desirable to have large-scale, convenient preparations of these compounds. Although the nitrido-rhenium complex featured here, ReNCl2(PPh3)2, is a key starting material, a detailed preparation has not been published previously. This new, versatile preparation is based quite closely on previous preparations and chemical observations. 

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