Cyclopentadienyl rhenium

Harrison, W. Trotter, J. (1972) Crystal and molecular structure of tricarbony [(trimethylsilyl)-7r-cyclopentadienyl]rhenium, J. Chem. Soc. Dalton Trans., 678-681. 

The mass spectrum of benzene(cyclopentadienyl)rhenium shows a very strong molecular ion peak. Very little fragmentation to give C5H5Re+ was observed (71). This is in contrast to the spectrum of benzene(cyclopenta-dienyl)manganese, which shows as the base peak C5H5Mn+ (54). 

Top S, Vessieres A, Pigeon P, Rager MN, Huche M, Salomon E, Cabestaing C, Vaissermann J, Jaouen G (2004) Selective estrogen receptor modulators (SERMs) in the cyclopentadienyl rhenium tricarbonyl series. Synthesis and Biological behaviour. Chem-biochem 5 1104—1113... 

Masi S, Top S, Boubeker L, Jaouen G, Mundwiler S, Spingler B, Alberto R (2004) Direct synthesis of tricarbonyl(cyclopentadienyl)rhenium and tricarbonyl(cyclopentadienyl)-technetium units from ferrocenyl moieties. Preparation of 17alpha-ethynylestradiol derivatives bearing a tricarbonyl(cyclopentadienyl)technetium group. Eur J Inorg Chem 10 2013-2017... 

The structures of isomers of complex dibromodicarbonyl cyclopentadienyl-rhenium drawn ... 

Benzenechromium tricarbonyl (Fluorobenzene)chromium tricarbonyl Cyclopentadienyl)rhenium tricarbonyl (1,3-Cyclohexadiene)iron tricarbonyl (1,3-Cyclohexadienyl)manganese tricarbonyl (T rimethylenemethane)iron tricarbonyl (Cyclopentadienyl)manganese tricarbonyl (1,3-Butadiene)iron tricarbonyl... 

On treating the compound (CsHslaReH, which has been mentioned earlier, with carbon monoxide at 90° and 250 atm it is possible to obtain the carbonyl (C6H5)2ReH(CO)2, which has neither acidic nor basic properties (8 ). It sublimes at 90-100°, melts at 111-112°, and is freely soluble in all the usual solvents such as benzene, ether, petroleum ether, and acetone. Unlike cyclopentadienyl rhenium hydride, it is stable in air. 

The first known complex in this class, frans-bis(triethylphosphine)-platinum chlorohydride, was prepared by Chatt and co-workers (86). In the light of other hydrides known at that time, in particular the carbonyl hydrides of iron and cobalt and bis(7r-cyclopentadienyl)rhenium hydride, the great stability of this complex was quite unique. It rapidly became clear that tertiary phosphine ligands were markedly effective in stabilizing the metal-hydrogen bond, and ligands such as PhjP, EtjP, o-CaH PlVfe, ... 

The reverse transfer of a hydrogen from the metal to a 7r-cyclopentadieny] ring presumably occurs in the formation of 7r-cyclopentadienylcyclopen-tadienedicarbonylrhenium from bis-(7r-cyclopentadienyl)rhenium hydride and carbon monoxide 56, 107). Cationic complexes in this class, prepared by protonation reactions, are discussed in Section III,E. 

Bis(7r-cyclopentadienyl)rhenium hydride was the first hydride to be recognized for 20 years after the isolation of the carbonyl hydrides of iron and cobalt 22). Within the last few years the related hydrides of molybdenum, tungsten, and tantalum have been isolated 80, 99, 106) (Table VIII). 

Chiral, pseudotetrahedral cyclopentadienyl rhenium complexes of formulas Re(ij -C5H5)(NO)(PPh3)(X) and [Reft/ -CjHsKNOKPPhjKLll X- have proved to be of broad utility in synthetic and mechanistic organometallic chemistry. As described in the procedures that follow, they are readily available in optically active form. This provides a valuable stereochemical probe for mechanistic... 

Cyclopentadienyl Rhenium Tricarbonyl Derivatives of Tamoxifen Derivatives... 

Scheme 3.11 Synthesis of the cyclopentadienyl rhenium tricarbonyl derivatives of OH-tamoxifen by McMurry cross-coupling.

CliHi3F6N2O3PW, (Acetone hydrazone)tricarbonyl( -cyclopentadienyl)-tungsten hexafluorophosphate, 44B, 758 CiiHi3FeP, 3,4-DimethyIphospholyl-cyclopentadienyliron, 43B, 1063 Cl iHi 303ReSi, TricarbonyK (trimethylsilyl)-7r-cyclopentadienyl)-rhenium, 38B, 781... 

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