Cluster compounds dynamic behaviour

The osmium compound [0s3(u-H)2(C0)10] is a rich source of heteronuclear cluster complexes by virtue of the reactivity of the osmium — osmium double bond. The compounds [Pt(C2Hi.)2(PR3)] [pr3 = P(cyclo-CsHi1)3, PPh3 or PBuc2Me] afford the 58-electron clusters(43) which undergo dynamic behaviour in solution with site-exchange of the hydrido ligands(28). Compounds (43) react... 

The dynamic behaviour of cluster compounds Ag2Ru4(iJL3-H)[iJL-Ph2As(CH2)n EPh2]-(CO)12 ... 

The variable-temperature NMR spectra of the clusters [Au2Ru3( -H)-(//3-COMe)(//-L2)(CO)9] [L2 = Ph2P(CH2)5PPh2 (2) or dppf (3)] are consistent with the AU2RU3 metal frameworks of both compounds undergoing similar dynamic behaviour to that proposed for... 

Compounds of Group 11. The 3H and 31P NMR spectra of [Cu4 (. L-dppm)4(. i4 r 1, r 2-C=C-)]2+ show 2 fluxional processes in solution, i.e. oscillation of the C=C2 unit inside the Cu4 rectangle, and flipping of the diphosphines.976 Dynamic solution behaviour has been found using variable-temperature 31P NMR spectra for a number of crown clusters of copper and silver, based on resorcinarene, (PhCH2CH2CHC6H2)4.977 The proton NMR spectrum of [ Cu(L) (PF6 ]n, where L = (205), is consistent with fluxional processes involving the pyridine-H3 proton at room temperature.978... 

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