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• W2042771884 abstract "One of the two acetone ligands in the complex [IrH2(Me2CO)2(PPh3)2]BF4 (1) is displaced by pyrazole (Hpz) to give [IrH2(Me2CO)(Hpz)(PPh3)2]BF4 (2). Treatment of2 with methyl propiolate and acetylenedicar☐ylic dimethyl ester leads to the cationic complexes [I¯rH(C(CO¯OCH3)=CH2)(Hpz)(PPh3)2]BF4 (3), [I¯rH(CH= CHCO¯OCH3)(Hpz)(PPh3)2]BF4 (4) and [I¯rH(C(CO¯OCH3)=CH(CO2CH3))(Hpz)(PPh3)2]BF4 (5). The molecular structure of3 has been determined by X-ray analysis.3 crystallizes with an acetone molecule in the lattice, in the space groupP21/m witha = 9.661(3)A˚,b = 22.903(3)A˚,c = 11.056(3)A˚and β = 99.82(1)°. The coordination around the iridium atom is a distorted octahedron with the two phosphorus atoms of the triphenylphosphine ligands occupyingtrans positions. The equatorial plane is formed by the α-C atom, the oxygen atom of the carbonyl group of the ester, the hydride and a nitrogen atom of the pyrazole ligand.3 reacts with [Rh(μ-OMe)(η4-1,5-COD)2] to give, via a redistribution reaction, [I¯r¯H¯(¯C¯H=¯¯C¯H¯C¯OOCH3)(MeOH)(PPh3)2]BF4 (6) and [Rh(μ-pz)(η4-1,5-COD)2]. The methanol molecule of6 is displaced by P(OMe)3 and CO to yield [I¯rH(CH=CH¯COOCH3)L(PPh3)2]BF4 (L = P(OMe)3 (7) or CO (8)). The vinyl complexes [IrH(C(CO2CH3)=CH2)(Hpz)(P(OMe)3)(PPh3)2]BF4 (9) and [IrH(C(CO2CH3)=CH2)Cl(Hpz)(PPh3)2] (10) were prepared by reaction of3 with P(OMe)3 and Cl− respectively. Complex10 reacts with [Rh(μ-OMe)(η4- 1,5-COD)2] to afford the heterobimetallic compound [H(C(CO2CH3)=CH2)(PPh3)2Ir(μ-pz)(μ-Cl)Rh(η4-1,5-COD)] (11)." @default.
• W2042771884 created "2016-06-24" @default.
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• W2042771884 date "1994-02-01" @default.
• W2042771884 modified "2023-10-03" @default.
• W2042771884 title "Reactions of [IrH2(Me2CO)(Hpz)(PPh3)2]BF4 with alkynes: synthesis of new hydride-vinyl iridium(III) complexes" @default.
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• W2042771884 doi "https://doi.org/10.1016/0022-328x(94)88052-2" @default.
• W2042771884 hasPublicationYear "1994" @default.
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