Mononuclear pivalates of metals of the first transition series

The synthesis and structures of mononuclear Ni(II), Co(II), Mn(II), and Cu(II) pivalates isolated as complex salts NBu4[M(Piv)(3)] ((NBu4)(+) is tetrabutylammonium cation, Piv(-) is pivalate anion) and polynuclear complexes [Ni-6(L)(2)(HL)(2)(Piv)(6)(HPiv)(8)], (NBu4)(2)[Co-4(Piv)(8)(AcO)(2)(H2O)(4)], NBu4[Co-2(Piv)(5)(H2O)(2)], and (NBu4)(2)[Cu-4(Piv)(8)(AcO)(2)(H2O)(2)] (L2-, HL-, and AcO- is lactic acid dianion, lactic acid monoanion, and acetate anion, respectively) are discussed. The formation of the compounds is detected during the development of the synthesis of NBu4[M(Piv)(3)].