Diane Dickie - Reaction of carbon dioxide with main group complexes: What a difference the phosphorus makes.

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      Publication Details (including relevant citation   information): Dickie,Diane A., Kemp,Richard A.,   Abstracts of Papers, 237th ACS National Meeting, Salt Lake   City, UT, United States, March 22-26, 2009,   2009, pp INOR-073

      Abstract: Carbon dioxide has long been known to   insert into the metal-nitrogen bond of main group alkylamido   and/or silylamido complexes to form carbamates, isocyanates or   carbodiimides depending on reaction conditions. By this method, a   cheap, readily available C1 source (CO2) can be converted into   value-added org. products. In order to extend the scope of this   insertion chem. and therefore the variety of org. products, we   have prepd. a series of divalent main group complexes with   phosphinoamido ligands and studied their reaction with carbon   dioxide. Most notably, under extremely mild conditions,   Sr[N(PPh2)2]2(THF)3 reacts with CO2 to give an unexpected   oxidative rearrangement of the ligand along with the formation of   a sym. Sr6 compd. featuring unprecedented O2CN(PPh2)2- and   N(CO2)33- ligands. [on SciFinder(R)]

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