Group 6 metal carbonyl complexes of cyclo-(P5Ph5)

Group 6 metal carbonyl complexes of cyclo-(P5Ph5)
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环-(P5Ph5)第6族金属羰基配合物

DOI:
10.1515/pac-2018-0905
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发表时间:
2019
影响因子:
1.8
通讯作者:
E. Hey‐Hawkins
E. Hey‐Hawkins
中科院分区:
化学4区
文献类型:
--
作者:
D. M. Yufanyi;Toni Grell;M. Sárosi;P. Lönnecke;E. Hey‐Hawkins

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抽象第6族金属(Cr,Mo,W)羰基配合物与cyclo-(P5 Ph 5)反应得到富磷配合物[Cr(CO)5{cyclo-(P5 Ph 5)-κP1}](1),[{Cr(CO)5}2{μ-cyclo-(P5 Ph 5)-κP1,P3}](2),[M(CO)4{cyclo-(P5 Ph 5)-κP1,P3}](其中M=Cr(3),Mo(4),W(exo-5,endo-5))。配合物1-5通过31 P {1H} NMR和IR光谱、元素分析和X射线晶体学表征。环戊磷烷保持完整并作为单齿(1)、桥接(2)或双齿(3-5)配体。化合物exo-5和endo-5是构型异构体,并且在与未配位的磷原子连接的苯环所采用的取向上基本上不同。~(31)P ~(1H)NMR谱表明ABCDE自旋系统具有五重态。理论计算表明,exo-5和endo-5实际上是等能的,这与exo-5和endo-5之间在溶液中观察到的平衡很好地一致。配合物的热性质也进行了评估。
Abstract Group 6 metal (Cr, Mo, W) carbonyl complexes react with cyclo-(P5Ph5) to afford the phosphorus-rich complexes [Cr(CO)5{cyclo-(P5Ph5)-κP1}] (1), [{Cr(CO)5}2{μ-cyclo-(P5Ph5)-κP1,P3}] (2), [M(CO)4{cyclo-(P5Ph5)-κP1,P3}] (with M=Cr (3), Mo (4), W (exo-5, endo-5)) depending on the reaction conditions. Complexes 1–5 were characterised by 31P{1H} NMR and IR spectroscopy, elemental analysis, and X-ray crystallography. The cyclopentaphosphane remains intact and acts as monodentate (1), bridging (2) or bidentate (3–5) ligand. Compounds exo-5 and endo-5 are configurational isomers and essentially differ in the orientations adopted by the phenyl rings attached to the uncoordinated phosphorus atoms. The 31P{1H} NMR spectra show five multiplets for an ABCDE spin system. Theoretical calculations showed that exo-5 and endo-5 are practically isoenergetic, which is in good agreement with the observed equilibrium in solution between exo-5 and endo-5. The thermal properties of the complexes have also been evaluated.
磷富锰(I)络合物[Mn2(μâBr){cycloâ(P4tBu3)PtBu}(CO)6]的合成和热解:从络合物到金属磷化物
DOI: 10.1002/cplu.201200013
发表时间: 2012
期刊: ChemPlusChem
影响因子: 3.4
作者:
A. Kircali;R. Frank;S. Gómez-Ruiz;B. Kirchner;E. Hey-Hawkins
通讯作者: E. Hey-Hawkins
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DOI: 10.1006/bbrc.1995.1741
发表时间: 1995
影响因子: 3.1
作者:
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通讯作者: Devynck,MA