40219-77-0

Upstream product

• 86167-35-3 [Mo(CO)2Cl(C₄H₇)((C₆H₅)2PCH₂CH₂P(C₆H₅)2)] 
• 1663-45-2 1,2-bis-(diphenylphosphino)ethane 
• 124715-68-0 MoH(ONC(O)CH₂CH₂C(O))((C₆H₅)2PCH₂CH₂P(C₆H₅)2)2 
• 50495-19-7 [Mo(N₂)2(1,2-bis(diphenylphosphino)ethane)2] 
• 63765-16-2 HMo(CO)2((C₆H₅)2PCH₂CH₂P(C₆H₅)2)2⁽¹⁺⁾*BF₄^(1-)=[HMo(CO)2((C₆H₅)2PCH₂CH₂P(C₆H₅)2)2]BF₄ 

Downstream Products

• 61542-59-4 Mo(CO)2(dpe)2Cl(+) 
• 63765-16-2 Mo(CO)2(dpe)2H(+) 
• 61542-54-9 [Mo(CO)2(Ph₂P(CH₂)2PPh₂)2F]⁽¹⁺⁾ 
• 37684-59-6 Mo(CO)2(dpe)2(+) 
• 61542-65-2 Mo(CO)2(dpe)2I(+) 
• 61542-61-8 Mo(CO)2(dpe)2Br(+) 

Relevant academic research and scientific papers

Ligand-centred Chemistry of Molybdenum Organoimides. Formation of C-C Bonds via Generation of Nitrogen Ylides, Stereospecific Conversion of an Allylimide into Alkylvinylimides, Liberation of Cyanoformate or Amino Acid Esters

The range of imides trans-(1+) made from the nitride trans- (dppe = Ph2PCH2CH2PPh2, R1 = H or organic group, R2 = organic group) has been extended; deprotonation of the imide group at the α-carbon gives reactive alkenylamides which have nitrogen ylide character and these are attacked by electrophiles.Stepwise C1 homologation of a methylimide to ethyl- and isopropyl-imides can be achieved by successive deprotonation and methylation steps.The crystal structure of the alkenylamide trans- has been determined, as has that of the imide produced directly from it by C-methylation, trans-2>(1+).Deprotonation at the α-carbon of an allylimide complex gives a species which is regioselectively and stereospecifically attacked by electrophiles at the γ-carbon; when the electrophile is the proton the overall reaction corresponds to a 1,3-prototropic rearrangement of the allylimide to the E-methylvinylimide.Electroreduction of imides in the presence of a source of protons releases the free amine; in this way esters of the amino acids glycine and DL-alanine have been synthesised.Two protons can be removed by base from imides with electron-withdrawing ester substituents and free cyanoformate esters are released from the metal centre by substitution with dinitrogen or CO.

Oxidative addition of N-substituted amides to molybdenum(II) involving N-H bond cleavage to give (η2-N-acylamido-N,O)hydridomolybdenum(II) complexes: X-ray molecular structure of the seven-coordinate complex [MoH{N(COCH3)CH3}{(C6H5) 2PCH2CH2P(C6H5) 2}2]

Photochemical or thermal reaction of [MoH4(dppe)2] with N-alkylamides R1NHCOR2 (R1, R2: Me, Me; Ph, Me; Me, H; Ph, H; (CH2)3; Ph, Ph) in benzene or toluene yielded [MoH{N(R1)COR2-N,O}(dppe)2] as a result of the oxidative addition involving amide N-H bond cleavage (dppe = Ph2PCH2CH2PPh2). The resulting N-acylamido complexes have been characterized by means of NMR and IR spectroscopy as well as with an X-ray crystal structure study for R1, R2 = Me, Me. Some reactions of the N-acylamido complexes, including the oxidation of MeOH to yield a formaldehyde-coordinated complex, are also described.

Deprotonation of [HMo(CO)2(P P)2]BF4 complexes: Hard anions as proton carriers

Reported are kinetic studies of the deprotonation of [HMo(CO)2(P P)2]BF4 complexes (P P = 1,2-bis(diphenylphosphino)ethane, dppe; P P = 1,2-bis(dimethylphosphino)ethane, dmpe; P P = 1,2-bis(diethylphosphino)ethane, depe). Amine bases deprotonated the metalloacids slowly, t1/2 typically being days, following the rate expression rate = k2[MoH+] [amine]. Deprotonation rates were dependent on the size of the amine bases and were greatly enhanced by the addition of salts of hard anions such as halides and acetate. The rate expression for deprotonation by mixed-base systems loses dependence on [amine], substituting instead a dependence on [X-]. The dependence of rate on the steric and electronic nature of the P P ligand was interrelated with similar features of the base. Activation energy parameters, H/D kinetic isotope effects, and solvent effects suggest Mo-H bond breaking as well as coordination sphere rearrangement in the transition state.

Consecutive Substitution in, and Reduction of, η-Allyl Molybdenium(II) Complexes, and a Study of Ligand Exchange in a Molybdenium(0) Product

Reactions of the allyl and 2-methylallyl complexes (R=H or Me) with ligands L=PMe2Ph or PMePh2 involve initial substitution to give followed by reduction to cis- or .The reduction, which is first order in the concentrations of both molybdenium complex and L, is thought to involve initial nucleophilic attack on the allyl ligand.Two of the PMe2Ph ligands in cis-, believed to be the mutually cis pair, undergo rapid dissociative exchange with free PMe2Ph in solution at high temperatures: the exchange occurs without scrambling the cis pair of ligands with the trans pair.In the absence of free PMe2Ph, slow decomposition at 353 K yields specifically the mer isomer of .It is shown that this is the expected result if the labile Mo-P bonds are those to the cis pair of PMe2Ph ligands.