537683-54-8

Basic information

• Product Name: [Mo2(η5-cyclopentadienyl)2(μ-H)(μ-PCy2)(CO)2]
• Synonyms: [Mo2(η5-cyclopentadienyl)2(μ-H)(μ-PCy2)(CO)2]
• CAS NO: 537683-54-8
• Molecular Weight: 576.379
• Mol File: 537683-54-8.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: [Mo2(η5-cyclopentadienyl)2(μ-H)(μ-PCy2)(CO)2](CAS DataBase Reference)
• NIST Chemistry Reference: [Mo2(η5-cyclopentadienyl)2(μ-H)(μ-PCy2)(CO)2](537683-54-8)
• EPA Substance Registry System: [Mo2(η5-cyclopentadienyl)2(μ-H)(μ-PCy2)(CO)2](537683-54-8)

Safety Data

• Hazardous Substances Data: 537683-54-8(Hazardous Substances Data)

Upstream product

• 22560-16-3 lithium triethylborohydride 
• 16523-54-9 chlorodicyclohexylphosphane 
• 537683-53-7 Li[Mo₂Cp₂(μ-PCy₂)(μ-CO)₂] 
• 7732-18-5 water 
• 1291-32-3 zirconocene dichloride 

Downstream Products

• 833486-27-4 [Mo3(η5-C5H5)3(μ-PCy2)(μ3-CO)(CO)4] 
• 12128-26-6 tricarbonylcyclopentadienyltungsten(II) hydride 
• 923587-87-5 [Mo2W(η5-C5H5)3(μ-PCy2)(μ3-CO)(CO)4] 
• 923587-87-5 [Mo2W(η5-C5H5)3(μ-PCy2)(μ3-CO)(CO)4] 
• 923587-92-2 [Mo2Ru(η5-C5H5)3(μ-PCy2)(μ-CO)(CO)3] 
• 960303-59-7 [Mo2(C5H5)2(μ-Ph)(μ-PCy2)(CO)2] 
• 934989-62-5 [Mo2(η5-cyclopentadienyl)2(μ-H)(CN(p-tol))2(μ-PCy2)(CO)2] 
• 935449-21-1 [Mo2(η5-cyclopentadienyl)2(μ-H)(μ-PCy2)(CO)2(μ-tetraethylpyrophosphite)] 

Relevant articles and documents

Reactivity of the unsaturated dimolybdenum anion [Mo2(η5-C5H5)2(μ-PCy2)(μ-CO)2]- towards electrophiles based on p- and d-block elements

The 30-electron binuclear anion [Mo2Cp2(μ-PCy2)(μ-CO)2]- reacts with the chlorophosphite ClP(OEt)2 or the organotin chlorides Cl2SnPh2 or ClSnPh3 to give compounds of the formula trans-[Mo2Cp2(μ-E)(μ-PCy2)(CO)2], (E = P(OEt)2, SnPh3, SnPh2Cl). In contrast, this anion reacts with the organosilicon chlorides ClSiR3 (R = Ph, Me) to give unstable silyloxycarbyne-bridged complexes [Mo2Cp2(μ-PCy2)(μ-COSiR3)(μ-CO)], which rapidly hydrolyze to give the known hydride [Mo2Cp2(μ-H)(μ-PCy2)(CO)2]. Two main types of products were also observed in the reactions of the title anion with different chlorocomplexes of the transition and post-transition metals. Thus, the reactions with [MCl2Cp2] (M = Ti, Zr) give moisture-sensitive isocarbonyl-bridged complexes of the type [Mo2Cp2(μ-COMClCp2)(μ-PCy2)(μ-CO)]. In contrast, softer metallic electrophiles such as [AuCl(PR3)] (R = iPr, ptol) react with the anion at the dimolybdenum site to form new trimetallic clusters of the formula [AuMo2Cp2(μ-PCy2)(CO)2(PR3)], also retaining a Mo-Mo triple bond. Subsequent reactions of the latter products with the solvate complexes [Au(PR3)(THF)][PF6] give the tetranuclear clusters [Au2Mo2Cp2(μ-PCy2)(CO)2(PR3)2][PF6] (Mo-Mo = 2.5674(3) A? and Au-Au = 2.7832(2) A? when R = iPr). Finally, the reaction of the title anion with HgI2 gives the pentanuclear cluster [Hg{Mo2Cp2(μ-PCy2)(CO)2}2] or the trinuclear cluster [Mo2Cp2(μ-HgI)(μ-PCy2)(CO)2] depending on the stoichiometry being actually used for the reaction. The trinuclear species is only stable in tetrahydrofuran (THF), and decomposes to give a mixture of the dimeric species [Mo2Cp2(μ-HgI)(μ-PCy2)(CO)2]2 along with variable amounts of the known iodide-bridged complex [Mo2Cp2(μ-I)(μ-PCy2)(CO)2].

A versatile and unprecedented triply bonded dimolybdenum carbonyl anion

Chemical reduction of [Mo2Cp2(μ-Cl) (μ-PA2)-(CO)2] (A = Cy, Ph, OEt) gives the corresponding alkaline metal salts of the triply bonded anions [Mo2-Cp2(μ-PA2) (μ-CO)2]-, which exhibit both molybdenum and oxygen nucleophilic sites. The PCy2 anion reacts easily with NH4+, [AuCl(PR3)], or MeI to give unsaturated dicarbonyls [Mo2Cp2(μ-X)(μ-PA2) (CO)2] (X = H, AuPR3, Me), while [Me3O]BF4 gives the methoxycarbyne [Mo2Cp2(μ-COMe)(μ-PCy2)(μ-CO)] and allyl chloride rearranges to give the unsaturated alkenyl complex [Mo2-Cp2(μ-PCy2)(μ-CMeCH2) (CO)2].