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• 25478-60-8 cis-dicarbonyldichloroplatinum(II) 
• 21050-13-5 bis(triphenylphosphine)iminium chloride 
• 1817-57-8 4-phenyl-3-butyne-2-one 
• 10025-99-7 potassium tetrachloroplatinate(II) 

Relevant academic research and scientific papers

A facile route to carbonylhalogenometal complexes (M = Rh, Ir, Ru, Pt) by dimethylformamide decarbonylation

Dimethyl formamide (DMF) can be a convenient source of the carbonyl ligand in the coordination chemistry of rhodium, ruthenium, iridium, and platinum. We have undertaken a thorough study concerning the course of this reaction. In a first step, DMF-containing complexes are produced, which is usually accompanied by chloride redistribution. Then, upon refluxing, carbonyl species in the same oxidation state are obtained, presumably as a result of HCl-mediated DMF decomposition. Provided that water levels are kept low, reduction can occur to provide the complexes [NH2(CH3)2][RhCl2(CO) 2], [NH2(CH3)2][RuCl3(CO) 2(DMF)], [RuCl2(CO)2(DMF)2], and [NH2(CH3)2][IrCl2(CO) 2]. In the case of platinum, reduction is not effective and [NH2(CH3)2][PtCl3(CO)] is obtained. No carbonylpalladium species can be synthesized in this way, the reaction producing copious amounts of colloidal metal. Adding phosphanes to these chlorocarbonyl-containing solutions allows easy, one-step syntheses of a variety of complexes.

Reactions of acetylenes with noble-metal carbonyl halides. 12. Synthesis, reactivity, and solution structures by multinuclear NMR studies of σ-alkenylplatinum(II) complexes. X-ray structure analysis of [Pt{C(C6H5)=C(H)C(=O)Me}(CO)Cl] and [Pt{C(C6H5)=C(H)C(=NC6H 5)Me}(PPh3)2Cl]

The cluster compound [Pt(CO)2]3n2-, in chloroform solution at room temperature, reacts with H[Pt(CO)Cl3] and C6H5C≡CC(O)Me to give [Pt{C(C6H5)=C(H)C(=O)Me}(CO)Cl], 1. With PPh3, compound 1 yields [Pt{C(C6H5)=C(H)C(=O)Me}(PPh3)2Cl], 3, and with aromatic amines [Pt{C(C6H5)=C(H)C(=NR)-Me}(CO)Cl] (4, R = p-MeC6H4; 5, R = C6H5). Derivative 5 reacts with 1 and 2 mol equiv of triphenylphosphine to give complexes [Pt{C(C6H5)=C(H)C(=NC6H 5)Me}(PPh3)Cl], 6, or [Pt{C(C6H5)=C(H)C(= NC6H5)Me}(PPh3)2Cl], 7, respectively. The solution structures of compounds 1-7 was determined by a multinuclear NMR study (1H, 13C, 15N, 31P, and 195Pt), and the crystal structures of 1 and 7 were determined by X-ray diffraction. Crystals of 1 are monoclinic, space group C2/c, a = 18.516 (4) ?, b = 8.501 (1) ?, c = 14.108 (3) ?, β = 91.16 (2)°, Z = 8. The final disagreement factor was R = 0.0282 for 1199 observed reflections. The Pt atom adopts a square-planar coordination with distortions imposed by the coplanar five-membered metallacycle. An extensive π delocalization, not involving the Pt atom, spans the organic fragment. Relevant distances are Pt-C(1) = 2.017 (11) ?, Pt-O [trans to (CO)] = 2.048 (7) ?, and Pt-Cl [trans to C(sp2)] = 2.360 (3) ?. The molecules are arranged in the crystal in infinite stacks running parallel to the c axis with alternating Pt?Pt separations of 3.4467 (9) and 3.6675 (10) ?. Crystals of 7 are triclinic, space group P1, a = 9.0807 (14) ?, b = 13.0394 (8) ?, c = 19.4935 (24) ?, α = 80.239 (7)°, β = 78.065 (12)°, γ = 72.667 (8)°, Z = 2. The final disagreement factor is R = 0.0229 for 6240 observed reflections. The Pt atom has a distorted square-planar coordination with the phosphine ligands in the trans position; relevant distances are Pt-C(1) = 2.014 (4) ?, Pt-P(1) = 2.3045 (9) ?, Pt-P(2) = 2.3097 (10) ?, Pt-Cl = 2.4067 (11) ?. The organic moiety is perpendicular to the metal coordination plane due to the presence of the bulky triphenylphosphine ligands and is oriented so that the nitrogen approaches the platinum atom at the short Pt?N separation of 3.109 (3) ?.