Inorganic Chemistry, Vol.50, No.16, 7385-7387, 2011
Efficient Hydride and Pyrazolyl Redistribution upon Thermolysis of a Calcium Complex Containing Dihydrobis(pyrazolyl)borate Ligands
Thermolysis of CaBp(2)(THE)(2) (THF = tetrahydrofuran) at 190-200 degrees C and 0.05 Torr leads to a redistribution reaction to afford CaTp(2) (90%) and CaTp(BH4) (84%). Treatment of CaTp(BH4) with THF affords CaTp(BH4)(THF)(2) and [CaTp(BH4)(THF)](4), both of which were structurally characterized. Methanolysis or ethanolysis/hydrolysis of the BH4--containing complexes affords [TpCa(HOMe)(2)(mu(4)-B(OMe)(4))Ca(HOMe)(2)Tp][B(OMe)(4)] and [{TpCa}(3){mu(6)-B(OB(OEt)(3))(3)]center dot EtOH.