Iron–sulphur clusters with rigid chiral frameworks

Edidin, Robin T.; Zyzyck, Leonard A.; Norton, Jack R.

doi:10.1039/c39790000580

Cited by 7 publications

(6 citation statements)

References 0 publications

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“…NMR (CD3-N02, -25 °C): ó 6.75 (m, 1H, MeC5//4), 6.49 (m, 1H, MeC5fl4), 6.41 (m, 1H, MeC57f4), 6.16 (m, 1H, MeC5tf4), 6.08 (m, 1H, MeC5H4), 6.03 (m, 1H, MeCsft), 5.93 (m, 1H, MeC5//4), 5.85 (m, 1H, MeC5tf4), 5.84 (m, 1H, MeCsH4), 5.73 (m, 1H, MeC5H4), 5.68 (m, 1H, MeC5H4), 5.58 (m, 2H, MeC5H4), 5.57 (m, 1H, MeC5Ff4), 5.47 (m, 1H, MeC5tf4), 5.07 (m, 1H, MeC5//4), 3.14 (s, 3H, SC//3), 2.39 (s, 3H, CftCjIL), 2.36 ), 36.65 (s,/t3-SCH3), 14.52 (s, CH3C5H4), 14.41 (s, CH3C5H4), 13.41 (s, CH3C5H4), 13.33 (s, CHsCsHt). FABMS: 867 (M+), 852 (M+ -Me), 773 (M+ -MeC5H4, -Me).…”

Section: Samples Formentioning

confidence: 99%

“…These rearrangements may be considered a form of valence isomerism as seen in bullvalene,3 P73-,4 and other main group clusters.5 678There are, of course, many situations where -M bond migration is coupled to other processes such as ligand addition/dissociation, ligand migration, or electron transfer. 6 In such cases it is not possible to identify the relative energetic importance of scission/formation of -M bonds vs other changes in the cluster.…”

Section: Introductionmentioning

confidence: 99%

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Pairwise Mobility of Metal-Metal Bonds in (MeC5H4)4Ru4S3(SMe)n+

Houser¹,

Venturelli²,

Rauchfuss³

et al. 1995

Inorg. Chem.

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Section: Samples Formentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Pairwise Mobility of Metal-Metal Bonds in (MeC5H4)4Ru4S3(SMe)n+

Houser¹,

Venturelli²,

Rauchfuss³

et al. 1995

Inorg. Chem.

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“…However, the kinetic acidity of the substituted tungsten hydride is 5 orders of magnitude lower than that of the parent tricarbonyl. 56 The extremely slow rate of proton transfer seems clearly due to this high pKa value. .…”

Section: Discussionmentioning

confidence: 99%

Electrophilic cleavage of rhenium-oxygen bonds by Broensted and Lewis acids

Simpson¹,

Bergman²

1992

Organometallics

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The rhenium-oxygen bond in complexes of the type (CO)3(L)2ReOR (1 (R = CH3) or 2 (R = CH2CH3)) may be cleaved by a number of Brensted and Lewis acids. When an acid X-H is added to 1 or 2, one observes the formation of the exchanged rhenium product (CO)3(L)2ReX and the free alcohol (L = 1,2bis(dimethylarsino)benzene (diars, a), l,2-bis(diethylphosphino)ethane (depe, b), PMe3 (c), (2S,4S)-2,4bis(diphenylphosphino)pentane (bdpp, d), or l,2-bis(diphenylphosphino)ethane (dppe, e)). For the reactions with Bronsted acids, the reaction is reversible when aniline and certain other amines are added to 1 or 2, but the reaction may be driven to the right by the removal of the alcohol from the reaction mixture.Using this technique, the arylamido complex (CO)3(depe)ReNHC6H5 (13b) has been synthesized and its structure determined by a single-crystal X-ray diffraction study. Irreversible exchange occurs upon reaction with other acids such as R2PH, RPH2, H2S, and CpW(CO)3H. The terminal phosphide complexes are fluxional in solution, undergoing phosphorus inversion at temperatures much lower than the free phosphines. The alkoxides do not react cleanly with carbon acids, but the alkoxide ligands may be removed using alkyland alkenylboranes, leading to alkenylrhenium complexes.

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“…These tetranuclear complexes are of particular interest in having rigid but chiral Fe4S3 frameworks: the overall molecular symmetry is only C2 (13), but the framework is rigid in solution up to at least +150°C (19).…”

Section: Nitrosylation Of Fe2(co)6(sme)2mentioning

confidence: 99%

“…In CDC13i ar)(/-Fe2(CO)6(SEt)2, <5(CH3), 1.11 and 1.38; 5(CH2), 2.15 and 2.45; 5(CH3),17.5 and 17.7; 5(CHZ),19.6 and 33.9; 5(CO), 209.5. syn-Fe2(CO)6(SEt)2, 5(CH3), 1.33; 5(CH2), 2.45; S(CH3), 18.0; 5(CH2), 32.9; 5(CO), 210.2. Fe2(NO)4(SEt)2, S(CH3),1.53 and 1.58; 5(CH2),3.07 and 3.10; 5(CH3), 19.1; 5(CH2), 39.5 and 40.2.…”

mentioning

confidence: 98%