Browsing by Subject "cvd precursors"
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Item Synthesis and Structures of Co Bis-Trifluoromethylpyrazolate Complexes(2013-04) Rivers, Joseph H.; Jones, Richard A.; Rivers, Joseph H.; Jones, Richard A.Reactions of Co(PMe3)(3)Cl or CoCl2 with 3,5-(CF3)(2)-PzNa in hexane give Co(PMe3)(3)(3,5-(CF3)(2)-Pz) (1) and Co(PMe3)(3)(3,5-(CF3)(2)-Pz)(2) (2) respectively (3,5-(CF3)(2)-PzNa = sodium bis-trifluoromethylpyrazolate). Reaction of (3,5-(CF3)(2)-PzH) with Co(PMe3)(4) produces the unusual complex [cis-Co(PMe3)(4)H-2][Co(PMe3)(3,5-( CF3)(2)-Pz)(3)] (3) which formally contains a [Co(III)](+)[Co(II)](-) complex ion pair. Reaction of 3,5-(CF3)(2)-PzLi with an oxygenated suspension of CoCl2 and 3 equivalents of PMe3 gives (3,5-(CF3)(2)-Pz)(2)Co(mu-3,5-(CF3)(2)Pz)(mu-OPMe3)Li(OPMe3)(2) (4), while 2 reacts with LiOH to give [(PMe3)Co(mu-3,5-(CF3)(2)-Pz)(2)(mu(3)-OH)Li](2) (5). Both 2 and 3 react with O-2 in toluene solution to give Co(OPMe3)(2)(3,5-(CF3)(2)-Pz)(2) (6). All compounds have been characterized spectroscopically and by single crystal X-ray diffraction studies.Item Synthesis and Structures of Mononuclear 3,4-Bis(Trifluoromethyl)Pyrrolyl Complexes of Rh(I) and Ni(II)(2014-11) Rivers, Joseph H.; Jones, Richard A.; Rivers, Joseph H.; Jones, Richard A.New mononuclear complexes of the 3,4-bis(trifluoromethyl)pyrrolyl ligand (3,4-(CF3)(2)-Pyr(-)) with Rh(I) and Ni(II) are reported. Reaction of 3,4-(CF3)(2)-PyrNa with [Rh(COD)Cl](2) produces [Rh(PMe3)(3)(3,4-(CF3)(2)(-)Pyr)] (1) while reaction of 3,4-(CF3)(2)-PyrH with [Ni(PMe3)(2)Me-2] (2) or [Ni(PMe3)(2)Ph-2] (4) gives [trans-Ni (PMe3)(2) (3,4-(CF3)(2)-Pyr)(CH3)] (3) or [trans-Ni(PMe3)(2)(C6H5)(3,4-(CF3)2-Pyr)] (5) respectively. Complexes 1, 3 and 5 have been characterized spectroscopically and all five compounds have been structurally characterized by single crystal X-ray diffraction studies.