Rhenium complexes acetonitrile

B2F,MoN C,Hi2, Molybdenum(II), te-trakis(acetonitrile)dinitrosyl-, cis-, bis[tetrafluoroborate(l -)], 26 132 02B2F,N4 VC Hi2, Tungsten(II), te-trakis(acetonitrile)dinitrosyl-, cis-, bis[tetrafluoroborate(l -)], 26 133 O2CH24 Formic acid, rhenium complex, 26 112... 

Nitriles are resistant to hydrometallation by transition metal hydride complexes. The complex Cp2ZrHCl reacts with nitriles A rhenium complex bridged by adinuc-lear hydride undergoes insertion with several isonitriles and with acetonitrile. The product in the case of the isonitrile results from a 1,1-inertion (see 11.2.8) ... 

Carbon dioxide electroreduction can be carried out on modified polypyrrole electrodes [81,82,180]. The active electrodes are obtained by electropolymerizalion of Re(L)(CO)3Cl complex, where L is a pyrrole-substituted ligand of various length. The active species is the immobilized rhenium complex. The main reaction product in acetonitrile is carbon monoxide, and preparative-scale electrolysis gave efficiencies as high as 90%. 

The reaction between excess RO2COCCO2R (R = Me, Et) and ReH5(ttp) (Op = PhP(CH2CH2CH2PPh2)2 affords complex 73. Electroidiilic alkynes react with the rhenium complex Re2(CO)9(NCMe) with displacement of the acetonitrile ligand and insertion of the alkyne into the Re— Re bond to form the trans dimetallated alkene complexes 74. Treatment of TcI(=NAt)3 with one equivalent of KCp results in formation of Tc(tii-CpX=NAr)3. Excess of KCp results in the complex Tc(ti -Cp)2(=NAr)3. > The alkyne RCCR (R = C02Me) inserts into a Mn— P bond of (OC)4Mn(Ti2-PPh2PAr) to form the diphosphamanganacyclopentene complexes 75. ... 

An unusual dimeric complex has been synthesized by the reaction of [ReNCU] with TMSNPPha in acetonitrile. The rhenium atoms in [ Re(N)Cl(NPPh3C6H4) 2] (57), which possesses a Re—Re bond, are /i2-bridged via the A-atoms of the phosphoraneiminato ligands and the coordination spheres of the metal atoms are completed by nitrido and chloro ligands as well as by a Re—C bond to one phenyl group. 

Compared with the huge number of oxo complexes only a few rhenium(V) compound with terminal sulfldo complexes are known. The square-pyramidal complex anion [ReS(S4)2] was first isolated in pure form in 1986 by a reaction of Rc207 with (Ph4P)Br and ammonium polysulfide in acetonitrile and the structure of the Ph4P+ salt has been elucidated. Later, the same complex anion was prepared from starting materials such as [Re2Cl8] , perrhenate, ... 

Tris(l,2-bis(dimethylphosphino)ethane)rhenium(I) trifluoromethanesulfonate is a white solid which can be oxidized to the purple Re(II) analog. This Re(I) salt is soluble in methanol, ethanol, dichloromethane, acetone, dimethyl sulfoxide (DMSO), and acetonitrile, and insoluble in diethyl ether [N.B. This Re(I) complex is unstable in nitromethane, presumably suffering oxidation to Re(II)]. 

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