Pd(II)- and Pt(II)-Assisted P-C Activation/Cyclization Reactions with a Luminescent α-Aminophosphine.

There is unceasing interest toward transformations of phosphine derivatives, which are facilitated by transition metals. We report a facile Pd(II)- and Pt(II)-assisted P-C bond cleavage in a luminescent 2-phenylbenzothiazole-based α-methylaminophosphine (, ). Specifically, reactions between and [M(COD)Cl] (M = Pd, Pt; COD = cycloocta-1,5-diene) in different solvents (methylene chloride, acetonitrile, pyridine, toluene) resulted in the formation of PPh, captured either as a bridging ligand in binuclear complexes with a {M(PPh)} moiety or as an adduct to COD in [Pt(PPhCOD)Cl].

Chromium-Lanthanide Complexes Containing the Cr═P═Cr Fragment: Synthesis, Characterization, and Computational Study.

Heterometallic complexes [Cp*Ln(μ-CO){Cr(μ-P)Cp(CO)}] [Ln = Yb (), Sm ()] were obtained in reactions of [Cp*Ln(thf)] (Ln = Sm, Yb) with [{CpCr(CO)}(μ,η-P)] (). An analogous yttrium compound [Cp*Y(μ-CO){Cr(μ-P)Cp(CO)}] () was synthesized using a three-component reaction between [Cp*Y(BPh)], , and KC. Compounds - were isolated as solvent-free crystalline phases; in the case of , the solvate was also obtained.

Europium and ytterbium complexes with o-iminoquinonato ligands: synthesis, structure, and magnetic behavior.

Complexes of divalent ytterbium (1) and europium (2) with a dianionic o-amidophenolate ligand were prepared by both the direct reduction of 4,6-di-tert-butyl-N-(2,6-diisopropylphenyl)-o-iminobenzoquinone (dpp-IQ) and the salt metathesis reaction of potassium o-amidophenolate with LnI2 (Ln = Yb, Eu). Oxidation of o-amidophenolates 1, 2 with one equivalent of dpp-IQ as well as the salt metathesis reaction of potassium o-iminosemiquinolate with LnI2 afforded ligand mixed-valent o-iminosemiquinonato-amidophenolato complexes of trivalent ytterbium (3) and europium (4). All novel complexes 1-4 were fully characterized, including the solid state structures of 1 and 2 determined by single crystal X-ray diffraction.