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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Bis(isothiocyanato)bis(phosphine)complexes of group 10 metals:reactivity toward organic isocyanides
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Bis(isothiocyanato)bis(phosphine)complexes of group 10 metals:reactivity toward organic isocyanides

机译:第10类金属的双(异硫氰酸根)双(膦)配合物:对有机异氰酸酯的反应性

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摘要

Treatment of Ni(NCS)_2(PMe_2Ph)_2 with organic isocyanides CN-R gave five-coordinate isocyanide Ni(n)complexes,Ni(CN-R)(NCS)_2(PMe_2Ph)_2(R=C_6H_3-2,6-Me_2(1),t-Bu(2)).Interestingly,the corresponding reaction of Ni(NCS)_2(P(n-Pr)_3)_2 with 2 equiv.of CN-t-Bu gave an unusual compound,which exists as an ion pair of the trigonal bipyramidal cation[Ni(P(n-Pr)_3)_2(CN-t-Bu)_3]~(2+)(3)and the dinuclear NCS-bridged anion[Ni(1,3-mu-NCS)(NCS)_3]_2~(2-)(4).In contrast,Pd(NCS)_2(P(n-Pr)_3)_2 underwent substitution with 2 equiv.of CN-t-Bu to give the four-coordinate mono(isocyanide)Pd(II)complex Pd(NCS)(SCN)(CN-t-Bu)(P(n-Pr)_3)(5)via phosphine dissociation.Reactions of M(NCS)_2L_2(M=Pd,Pt;L=PMe_3,PEt_3,PMePh_2,P(n-Pr)_3)with two equiv.of CN-R(R=t-Bu,i-Pr,C_6H_3-2,6-Me_2)gave the corresponding bis(isocyanide)complexes[M(CN-R)_2(PR_3)_2](SCN)_2(7-13),except for Pd(NCS)_2(PEt_3)_2 that reacted with CN-R'(R'=i-Pr,C_6H_3-2,6-Me_2)and produced the mono(isocyanide)Pd(II)complexes[Pd(CN-R')(SCN)(PEt_3)_2](SCN)(14 and 15).Finally,treatment of M(NCS)_2(PMe_3)_2(M=Ni,Pd,Pt)with sterically bulky isocyanide CN-C_6H_3-2,6-i-Pr_2 gave various products,(16-18)depending on the identity of the metal.
机译:用有机异氰酸酯CN-R处理Ni(NCS)_2(PMe_2Ph)_2得到五配位异氰酸酯Ni(n)络合物Ni(CN-R)(NCS)_2(PMe_2Ph)_2(R = C_6H_3-2,6 -Me_2(1),t-Bu(2))。有趣的是,Ni(NCS)_2(P(n-Pr)_3)_2与2当量的CN-t-Bu的相应反应产生了一种不寻常的化合物,以三角双锥体阳离子[Ni(P(n-Pr)_3)_2(CN-t-Bu)_3]〜(2 +)(3)和双核NCS桥连阴离子[Ni( 1,3-mu-NCS)(NCS)_3] _2〜(2-)(4)。相反,Pd(NCS)_2(P(n-Pr)_3)_2被2当量的CN-取代t-Bu通过膦分解生成四配位的单(异氰酸酯)Pd(II)配合物Pd(NCS)(SCN)(CN-t-Bu)(P(n-Pr)_3)(5)。 M(NCS)_2L_2(M = Pd,Pt; L = PMe_3,PEt_3,PMePh_2,P(n-Pr)_3),具有两个等价的CN-R(R = t-Bu,i-Pr,C_6H_3-2 ,6-Me_2)除与Pd(NCS)_2(PEt_3)_2反应的双(异氰酸酯)配合物[M(CN-R)_2(PR_3)_2](SCN)_2(7-13)外CN-R'(R'= i-Pr,C_6H_3-2,6-Me_2)并生成单(异氰酸酯)Pd(II)络合物[Pd(CN-R')(SCN)(PEt_3)_2] (SCN)(14和15)。最后,用空间体积大的异氰酸酯CN-C_6H_3-2,6-i-Pr_2处理M(NCS)_2(PMe_3)_2(M = Ni,Pd,Pt)得到各种产物, (16-18)取决于金属的身份。

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