Oxidation reactions using water, hydrogen peroxide and halogens to give pallada(IV)cyclopentane complexes PdX(C4H8){(pz)3BH} (X = OH, Cl, Br, I). The X-ray strucutre of the hydroxoplatinum(IV) complex Pt(OH)Me2{(pz)3BH}, formed using water as an oxidant

The pallada(II)cyclopentane reagent [Pd(C 4H 8{(pz) 3BH}] -, generated by addition of potassium tris(pyrazol-1-yl)borate to the tetramethylethylenediamine analogue, reacts with water or hydrogen peroxide to give hydroxopalladium(IV) complex Pd(OH)(C 4H 8){(pz) 3BH}. Similar oxidation reactions occur with phenyliodonium dichloride, bromine and iodine to give PdX(C 4H 8){(pz) 3BH} (X = Cl, Br, I). The hydroxoplatinum(IV) complex Pt(OH)Me 2{(pz) 3BH} has been obtaine reaction of [PtMe 2(SEt 2)] 2 with K[(pz) 3BH], followed by addition of water, and its structure determined by an X-ray diffraction study. © 1995.