Rational Synthesis and Crystal Structures of Heterometallic-Heterochalcogenido Cubane-Type Clusters [(Cp<sup>*</sup>M)<sub>2</sub>(MoOCl<sub>2</sub>){MoCl<sub>2</sub>(dmf)}(μ<sub>3</sub>-S)<sub>2</sub>(μ<sub>3</sub>-Se)<sub>2</sub>] (M=Rh, Ir)
作者:Hidetake Seino、Masanobu Hidai、Yasushi Mizobe
DOI:10.1246/cl.2002.920
日期:2002.9
Reactions of [MoO(dmf)3}2(μ2-S)2]I2 with [(Cp*MCl)2(μ2-SeH)2] (M=Rh, Ir) in the presence of NMe4Cl gave mixed-metal sulfido-selenido clusters [(Cp*M)2(MoOCl2)MoCl2(dmf)}(μ3-S)2(μ3-Se)2], whose cubane-type core structures have been demonstrated in detail by X-ray crystallography.
Reactions of hydrosulfido- and hydroselenido-bridged dinuclear Ir, Rh, and Ru complexes with SbCl3 and BiCl3 affording mixed-metal sulfido and selenido clusters containing both noble metals and Group 15 metals
A new versatile method to synthesize a series of noble metal-Group 15 metal chalcogenido clusters has been found. Thus, treatment of the hydrosulfido- or hydroselenido-bridged dinuclear complexes [Cp*MCl(mu-EH)(2)MCp*Cl] (M = lr, Rh; E = S, Se; Cp* = eta(5)-C5Me5), [CpdegreesRuCl(mu-SH)(2)RuCpdegreesCl] (Cpdegrees= eta(5)-C5EtMe4), and [Ru(L)Cl(mu-SH)(2)Ru(L)Cl] (L = eta(6)-C6Me5H) with M'Cl-3 (M'=Sb, Bi) in THF at room temperature afforded smoothly the clusters [Cp*MCl(mu-EM'Cl-2)(2)MCP*Cl], [CpdegreesRuCl(mu-SM'Cl-2)(2)RuCpdegreesCl], and [Ru(L)Cl(mu-SM'Cl-2)(2)Ru(L)Cl] through dehydrochlorination. The X-ray analyses of eleven new clusters clarified the details of their structures consisting of the cubane-type M2M'2ECl2 cores resulting from the presence of weak MCL...M' bonding interactions in addition to the normal M-E, M-Cl, and M'-E bonds. (C) 2004 Elsevier B.V. All rights reserved.
Syntheses of a series of trinuclear MIr2 or pentanuclear MIr4 bimetallic bis(selenido) and selenido–sulfido clusters (M=Pd, Pt, Fe, Co) from diiridium μ-bis(hydroselenido) and μ-hydroselenido–hydrosulfido complexes [{(η5-C5Me5)IrCl}2(μ-SeH)(μ-EH)] (E=Se, S)
Reactions of a diiridium mu-bis(hydroselenido) complex [Cp*IrCl(mu-SeH)(2)IrCp*Cl] (1a; Cp* = eta(5) -C5Me5) with [MCl2(cod)] (M = Pd, Pt; cod = 1,5-cyclooctadiene), FeCl2, and CoCl2 readily afforded the bimetallic selenido clusters containing a trinuclear or a pentanuclear cores [(Cp*Ir)(2)(MCl2)(mu(3)-Se)(2)] (M = Pd, Pt (5), Fe (6)) and [(Cp*Ir)(4)Co(mu(3)-Se)(4)][CoCl3(MeCN)](2) (8). Cluster 6 was converted to the latter-type bow-tie cluster [(Cp*Ir)(4)Fe(mu(3)-Se)(4)][BPh4](2) (7) by treatment with an additional amount of 1a and excess NaBPh4. Novel mu-hydroselenido-hydrosulfido complex [Cp*IrCl(mu-SeH)(mu-SH)IrCp*Cl] (3) was obtained by the reaction of [Cp*IrCl(mu-Cl)(2)IrCp*Cl] with one equiv of H2Se generated in situ from a NaSeH/HCl aq. mixture, followed by that with H2S gas. Treatment of 3 with a range of transition metal compounds has shown that 3 can serve as a good precursor to synthesize a series of mixed-chalcogenido clusters in a rational manner; selenido-sulfido clusters derived from 3 include [(Cp*Ir)(2)(MCl2)(mu(3)-Se)(mu(3)-S)] (M=Pd, Pt, Fe (14)), [(Cp*Ir)(2)PtCl(PPh3)}(mu(3)-Se)(mu(3)-S)]Cl (13), [(Cp*Ir)(4)Co(mu(3)-Se)(2)(mu(3)-S)(2)][CoCl3(MeCN)](2) (15), and [(Cp*Ir)(4)Fe(mu(3)-Se)(2)(mu(3)-S)(2)][BPh4](2). To determine the detailed structures, X-ray analyses have been undertaken for 5.1/2ClCH(2)CH(2)Cl, 6, 7, 8, 13.CH2Cl2, 14, and 15.CH2Cl2. (C) 2003 Elsevier Science B.V. All rights reserved.