Synthesis, Characterization, and Comparative Theoretical Investigation of Dinitrogen-Bridged Group 6-Gold Heterobimetallic Complexes
作者:David Specklin、Anaïs Coffinet、Laure Vendier、Iker del Rosal、Chiara Dinoi、Antoine Simonneau
DOI:10.1021/acs.inorgchem.0c03271
日期:2021.4.19
We have prepared and characterized a series of unprecedented group 6–group 11, N2-bridged, heterobimetallic [ML4(η1-N2)(μ-η1:η1-N2)Au(NHC)]+ complexes (M = Mo, W, L2 = diphosphine) by treatment of trans-[ML4(N2)2] with a cationic gold(I) complex [Au(NHC)]+. The adducts are very labile in solution and in the solid, especially in the case of molybdenum, and decomposition pathways are likely initiated
Hydride Transfer Reactivity of Mo(L)(H)(depe)
<sub>2</sub>
(L = N, NBEt
<sub>3</sub>
)
作者:Johan Cugny、Helmut W. Schmalle、Thomas Fox、Olivier Blacque、Montserrat Alfonso、Heinz Berke
DOI:10.1002/ejic.200500721
日期:2006.2
propensity of 8 to undergo carbonylinsertion was documented further by reactions with CO2 and carbonylmetal compounds. Conversion with CO2 led to formation of the formato complex Mo(NBEt3)(OCHO)(depe)2 (9) and reactions with Fe(CO)5 and Re2(CO)10 resulted in the formation of Mo[(μ-OCH)Fe(CO)4](NBEt3)(depe)2 (12) and Mo[(μ-OCH)Re2(CO)9](NBEt3)(depe)2 (13). X-ray diffraction studies were carried out on 1–4
is the N2 cleavage of a one‐electron oxidation reaction using trans‐[Mo(depe)2(N2)2] (1) (depe=Et2PCH2CH2PEt2), which is a classical molybdenum(0)‐dinitrogencomplex supported by two bidentate phosphine ligands. The molybdenum(IV) terminal nitride complex [Mo(depe)2N][BArf4] (2) (BArf4=B(3,5‐(CF3)2C6H3)4) is synthesized by the one‐electron oxidation of 1 upon addition of a mild oxidant, [Cp2Fe][BArf4]
这里报道的是使用反式-[Mo(depe)2(N 2)2 ](1)(depe = Et 2 PCH 2 CH 2 PEt 2)的单电子氧化反应的N 2裂解。(0)-二氮配合物由两个双齿膦配体支撑。钼(IV)末端氮化物络合物[Mo(depe )2 N] [BArf 4 ](2)(BArf 4 = B(3,5-(CF 3)2 C 6 H 3)4)是通过添加弱氧化剂[Cp 2 Fe] [BArf 4 ](Cp = C 5 H 5)的单电子氧化1合成的,并通过从Mo II ‐N = N裂解N 2进行‐ Mo II结构。此外,用于电化学氧化反应1也裂解Ñ 2配体,得到2。二聚体Mo络合物与桥接Ñ 2是通过原位共振拉曼和原位的UV-vis光谱的电化学氧化反应过程中检测到1。密度泛函理论(DFT)计算表明,不稳定的单体氧化的Mo I物种通过涉及Z字形过渡态的二聚结构转化为2。
The reactions of dinitrogen complexes of molybdenum with thiols and sulphenyl halides
作者:Joseph Chatt、John P. Lloyd、Raymond L. Richards
DOI:10.1039/dt9760000565
日期:——
The dinitrogencomplex trans-[Mo(N2)2dpe)2](dpe = Ph2PCH2CH2PPh2) reacts with thiols RSH (R = Et, Prn, Bun, or Ph) in tetrahydrofuran (thf) to give the diamagnetic complexes [Mo(SR)2(dpe)2], together with dihydrogen and two mole equivalents of dinitrogen. trans-[Mo(N2)2(depe)2](depe = Et2PCH2CH2PEt2) gives [Mo(SPh)2(depe)2] with thiophenol. With PhSCl, trans-[Mo(N2)2(dpe)2] gives [MoCl(SPh)(dpe)2]
Molecular hydrogen complexes. 5. Electronic control of .eta.2-H2 vs. dihydride coordination. Dihydride structure of MoH2(CO)(R2PC2H4PR2)2 for R = Et, iso-Bu versus .eta.2-H2 for R = Ph
作者:Gregory J. Kubas、R. R. Ryan、Clifford J. Unkefer
DOI:10.1021/ja00260a043
日期:1987.12
examples of transition-metal molecular-hydrogen (M-eta/sup 2/-H/sub 2/) complexes have been established at an increasingly rapid pace, including several complexes previously formulated as classical hydrides (e.g., FeH/sub 4/ (PEtPh/sub 2/)/sub 3/). Equilibrium between dihydrogen and dihydride ligands has been observed in solution, /sup 2a,2d/ emphasizing that eta/sup 2/-H/sub 2/ complexes can be considered