191719-64-9Relevant academic research and scientific papers
Preparation, reactions, and infrared spectra of fac-(CO) 3(P-P) Mn-Z complexes (P-P = DEPE, DPPE, DPPP; Z = H, OTs, OMe, OC(O) OMe, NCO, C1, Br, N3)
Li, Guang Qing,Orchin, Milton
, p. 43 - 47 (1997)
A series of new octahedral Mn(I) complexes fac(CO)3(depe)Mn-Z (depe = 1,2-bis(diethylphosphino)ethane, Z = H, OTs, OMe, OC(O)OMe, NCO, Cl, Br, N3) have been prepared and characterized, particularly with respect to their infrared spectra. The variations observed in the carbonyl stretching frequencies associated with the coordinated carbon monoxides are a function of the Z groups. Comparison of these spectra with similar spectra of the analogous dppp, 1,3-bis(diphenylphosphino)propane and dppe, 1,2-bis(diphenylphosphino)ethane complexes shows the effect of substituting phenyl groups for ethyl groups on the phosphorus atom. The depe azido complex (Z = N3) reacts with alkynes to give a triazolato complex which on hydrolysis with HCl liberates the triazole and regenerates the chloro complex from which the azido complex is made.
The preparation and reactions of the azides of fac-Mn(CO)3(P-P)N3. The X-ray crystal structures of fac-[Mn(CO)3(P-P)(OH2)]BF4, fac-Mn(CO)3(P-P)(NN2C(CF3)N) [(P-P)=dppe and depe], and fac-[Mn(CO)3(depe)(PPh3)]BF4
Becker, Thomas M.,Krause-Bauer, Jeanette A.,Homrighausen, Craig L.,Orchin, Milton
, p. 2563 - 2571 (2008/10/09)
A simple three-step, high-yield synthesis of the titled azides from Mn2(CO)10 and P-P is described involving the intermediate aqua complexes, fac-[Mn(CO)3(P-P)(H2O)]BF4, 3a,b. The aqua ligand is very labile; it is easily exchanged for D2O, PPh3, and NO2-. Crystal structures of the two titled aqua complexes and fac-[Mn(CO)3(depe)(PPh3)]BF4, 6a, are reported. The aqua complexes react instantaneously with aqueous NaN3 to give quantitative yields of the corresponding covalent azides which undergo the expected 1,3-dipolar additions with CF3CN to give the corresponding tetrazoles whose crystal structures are also reported. Elsevier Science Ltd.
