首页> 外文期刊>Polyhedron: The International Journal for Inorganic and Organometallic Chemistry >Coordination chemistry of perhalogenated cyclopentadienes and alkynes, XXVII. Synthesis of bimetallic perchlorcymantrene derivatives [C _5Cl_(4 -X)(R)_x (ML_n)]Mn(CO) _3 with Ni, Pd or Pt - Complex fragments as ring substituents. Structures of {C_5Br_4[Ni(PMe_3) _2(Cl,Br)]}Mn(CO)_3
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Coordination chemistry of perhalogenated cyclopentadienes and alkynes, XXVII. Synthesis of bimetallic perchlorcymantrene derivatives [C _5Cl_(4 -X)(R)_x (ML_n)]Mn(CO) _3 with Ni, Pd or Pt - Complex fragments as ring substituents. Structures of {C_5Br_4[Ni(PMe_3) _2(Cl,Br)]}Mn(CO)_3

机译:全卤代环戊二烯和炔烃的配位化学,XXVII。具有Ni,Pd或Pt的双金属高氯环庚烯衍生物[C _5Cl_(4-X)(R)_x(ML_n)] Mn(CO)_3的合成-配合物片段为环取代基。 {C_5Br_4 [Ni(PMe_3)_2(Cl,Br)]} Mn(CO)_3的结构

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Treatment of [(C_5Cl_4Br)Mn(CO)_3] (1a) with ~nBuLi and the halide complexes [Ni(PR_3)_2Cl _2] (R = Me, Et, ~nPr, ~nBu; R_3 = Me_2Ph), [Pd(PPh_3)_2Cl_2], [Pd(dppe)Cl_2], and [Pt(PEt_3)_2Cl_2] yields the bimetallic cyclopentadienyl-bridged complexes {[C_5Cl _4(MLn)]Mn(CO)_3} with ML_n = trans-Ni(PR_3)_2Cl (2a-e), cis Pd(PR_3) _2Cl (3a,b) and cis-Pt(PEt_3)_2Cl (4), while with [Pd(COD)Br_2] a mixture of the neutral {[C_5Cl _4(Pd(COD)Br)]Mn(CO)_3} (5a) and the anionic {(OC) _3Mn[C_5Cl_4-Pd(Br)(μ-Br)_2(Br)Pd- C_5Cl_4]M_n(CO)_3}~(2-) (5b) is formed. The reaction of 1a, {[C~5Cl~(5-n)(SiMe _3)_n] Mn(CO)_3} (n = 1: 1b; 2: 1c) or {[C _5Cl_(5-n)(SMe)_n]Mn(CO)_3} (n = 1: 1d; 2: 1e) with a solution of in situ generated "Ni(PMe _3)_2(C_2H_4)" gives {[C _5Cl_4Ni(PMe_3)_2X]Mn(CO)_3} (X = Cl/Br: 2a/2a′) or the corresponding ring-silyl or methylthio-substituted derivatives {[C_5Cl_(4 -n)(SiMe_3)nNi(PMe_3) _2Cl]Mn(CO)_3} (6a,b) or {[C_5Cl_(4-n)(SMe)_n Ni(PMe_3)_2Cl] Mn(CO) _3} (7a,b), respectively. Similarly, the oxidative addition to [(C_5Br_5)Mn(CO)_3] (1f) yields a mixture of compounds {[C_5Br_4Ni(PMe_3)_2X]Mn(CO) _3} (X = Cl/Br: 8/8′). The molecular structures of 7b and 8/8′ have been determined by X-ray diffraction and show the trans configuration of the PMe_3 ligands in both complexes and the 1,2,4-regiochemistry of the three non-chlorine substituents in 7b.
机译:用〜nBuLi和卤化物络合物[Ni(PR_3)_2Cl _2](R = Me,Et,〜nPr,〜nBu; R_3 = Me_2Ph),[Pd]处理[(C_5Cl_4Br)Mn(CO)_3](1a) (PPh_3)_2Cl_2],[Pd(dppe)Cl_2]和[Pt(PEt_3)_2Cl_2]生成双金属环戊二烯桥连络合物{[C_5Cl _4(MLn)] Mn(CO)_3},其中ML_n =反式Ni( PR_3)_2Cl(2a-e),顺式Pd(PR_3)_2Cl(3a,b)和顺式Pt(PEt_3)_2Cl(4),而与[Pd(COD)Br_2]混合的是中性{[C_5Cl _4 (Pd(COD)Br)] Mn(CO)_3}(5a)和阴离子{(OC)_3Mn [C_5Cl_4-Pd(Br)(μ-Br)_2(Br)Pd- C_5Cl_4] M_n(CO)_3 }〜(2-)(5b)形成。 1a,{[C〜5Cl〜(5-n)(SiMe _3)_n] Mn(CO)_3}(n = 1:1b; 2:1c)或{[C _5Cl_(5-n)( SMe)_n] Mn(CO)_3}(n = 1:1d; 2:1e)与原位生成的“ Ni(PMe _3)_2(C_2H_4)”溶液给出{[C _5Cl_4Ni(PMe_3)_2X] Mn (CO)_3}(X = Cl / Br:2a / 2a')或相应的环甲硅烷基或甲硫基取代的衍生物{[C_5Cl_(4-n)(SiMe_3)nNi(PMe_3)_2Cl] Mn(CO)_3 }(6a,b)或{[C_5Cl_(4-n)(SMe)_n Ni(PMe_3)_2Cl] Mn(CO)_3}(7a,b)。类似地,向[(C_5Br_5)Mn(CO)_3](1f)进行氧化加成生成化合物{[C_5Br_4Ni(PMe_3)_2X] Mn(CO)_3}的混合物(X = Cl / Br:8/8') 。 7b和8/8'的分子结构已通过X射线衍射测定,显示了两种复合物中PMe_3配体的反式构型以及7b中三个非氯取代基的1,2,4-区域化学。

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