title: Efficient hydride and pyrazolyl redistribution upon thermolysis of a calcium complex containing dihydrobis(pyrazolyl)borate ligands.
abstract: Thermolysis of CaBp(2)(THF)(2) (THF = tetrahydrofuran) at 190-200 °C and 0.05 Torr leads to a redistribution reaction to afford CaTp(2) (90%) and CaTp(BH(4)) (84%). Treatment of CaTp(BH(4)) with THF affords CaTp(BH(4))(THF)(2) and [CaTp(BH(4))(THF)](4), both of which were structurally characterized. Methanolysis or ethanolysis/hydrolysis of the BH(4)(-)-containing complexes affords [TpCa(HOMe)(2)(μ(4)-B(OMe)(4))Ca(HOMe)(2)Tp][B(OMe)(4)] and [{TpCa}(3){μ(6)-B(OB(OEt)(3))(3)]·EtOH.
authors.affiliation: Department of Chemistry, Wayne State University, Detroit, Michigan 48202, USA.
authors.forename: Mark J
authors.initials: MJ
authors.lastname: Saly
authors.forename: Jing
authors.initials: J
authors.lastname: Li
authors.forename: Mary Jane
authors.initials: MJ
authors.lastname: Heeg
authors.forename: Charles H
authors.initials: CH
authors.lastname: Winter