Rhenium chloride, trans

QN402ReC2oH2o, Rhenium(V), dioxotetra-kis(pyiidine)-, chloride, trans-, 21 116 ClN406ReC2oH2o, Rhenium(V), dioxotetra-kis(pyridine)-, perchlorate, trans-, 21 117... 

ClN402ReC20H2(J, Rhenium(V), dioxo-tetrakis(pyridine)-, chloride, trans-,... 

ReCINjOjC oHa, Rhenium(V), dioxotetra-kis(pyridine)-, chloride trans-, 21 116 ReCIN406CxlHa, Rhenium(V), dioxotetra-kis(pyridine)-, perchlorate, trans-, 21 117 RhAs4ClC2oH32, Rhodium(l +), bis[o-phenyl-enebis(dimethylarsine)]-, chloride, 21 101 RhAs4C102C21H32, Rhodium( 1 +), (carbon dioxide)bis[o-phenylene-bis(dimethylarsine)]-, chloride, 21 101 RhBN4C44H56, Rhodium(l), tetrakis( I-isocyano-butane)-, tetraphenylborate(l -), 21 50 RhN,S Hl2, Rhodate(III), tris(pentasulfido)-, triammonium, 21 15... 

Triple bonds in side chains of aromatics can be reduced to double bonds or completely saturated. The outcome of such reductions depends on the structure of the acetylene and on the method of reduction. If the triple bond is not conjugated with the benzene ring it can be handled in the same way as in aliphatic acetylenes. In addition, electrochemical reduction in a solution of lithium chloride in methylamine has been used for partial reduction to alkenes trans isomers, where applicable) in 40-51% yields (with 2,5-dihydroaromatic alkenes as by-products) [379]. Aromatic acetylenes with triple bonds conjugated with benzene rings can be hydrogenated over Raney nickel to cis olefins [356], or to alkyl aromatics over rhenium sulfide catalyst [54]. Electroreduction in methylamine containing lithium chloride gives 80% yields of alkyl aromatics [379]. 

C. The characteristic infrared stretch of the ReN triple bond has not been found due to interference from Ph modes the ReCl stretch occurs at 323 cm (Nujol mull). Despite the color of the complex in the solid state and the yellow color of a CH2CI2 solution, no distinctive features appear in the visible region of the spectrum. The dipole moment of 1.6 (3) D is consistent with the X-ray crystal structure obtained elsewhere that reveals a distorted square pyramid with an apical nitrido ligand and mutually trans chloride ligands in the basal plane. The triphenylphosphine ligands are distorted toward the empty rhenium coordination site. 

Titanium(IV) chloride forms a number of different adducts with trans-[ReCl(N2)(PMe2Ph)4] (see Table 1) that are believed to involve dinitrogen bridging between rhenium and titanium. Hydrolysis or treatment of these adducts with ethanol results in the virtual quantitative recovery of the original rhenium-dinitrogen complex. 

C4H16ClNi,02Re, trans Dioxobis(ethylenediamine)rhenium(V) chloride, 38B, 812 40B, 802 44B, 796... 

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