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Hydrogen exchange, bridge-terminal

This remarkable thorium compound is stable to 80 °C. In solution it has rapid hydrogen exchange with dihydrogen gas. Solution NMR shows the bridge and terminal hydrogens... [Pg.217]

A possible exchange process that involves the Cp hydrogens, Zr-H terminal hydride, and Zr-H-B bridge hydrogens is shown in Scheme II. To account for the... [Pg.32]

Scheme 21 Transition state geometries for the bridge-terminal hydrogen exchange in T]2 - BH4 complexes... Scheme 21 Transition state geometries for the bridge-terminal hydrogen exchange in T]2 - BH4 complexes...
Hydrogen exchange between bridge and terminal positions in /x-dimethyl-aminodiborane has been studied in the pure liquid and in solution in methylcyclohexane and in ethers, by n.m.r. spectroscopy over a range of temperatures. The activation parameters (Table 1) show marked... [Pg.107]

Mechanisms for exchange of terminal and bridge hydrogen atoms in A1(BH4)3. For clarity, only one BH4 group is shown in detail. [Pg.412]

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See also in sourсe #XX -- [ Pg.193 ]



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Bridging hydrogen exchange

Hydrogen bridges

Hydrogen terminal-bridging

Hydrogen-terminated

Hydrogenation terminal

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