Dihydrogen ligands

Platinum(II) Complexes with Hydrido and Dihydrogen Ligands 718... 

A possible increased coordination number for Mo by adding hydrides and/or r 2-dihydrogen ligands for transfer to dinitrogen... 

Schemes 3.2 and 3.3 show intermediates containing dihydrogen ligands with the H-H bond intact. It has only been appreciated since the discovery of the first dihydrogen complexes by Kubas and coworkers in 1984 [14] that such complexes are key intermediates in catalytic cycles [11, 13, 14].

The mechanism is dominated by the remarkable stability of the Fe( 72-H2) bond, which is one of the most stable 72-H2 complexes reported in the literature [8, 10]. Remarkably, the free coordination site for the incoming alkyne is provided by the reversible dissociation of one of the phosphine moieties of the PP3 ligand rather than dissociation of the dihydrogen ligand (see Scheme 14.1). The coordinated alkyne subsequently inserts into the Fe-H bond and the emerging Fe-vinyl bond is... 

RUTHENIUM AND OSMIUM COMPLEXES CONTAINING HYDRIDE AND DIHYDROGEN LIGANDS... 

GENERAL VIEW FROM AN H2 MOLECULE TO A DIHYDROGEN BOND VIA A DIHYDROGEN LIGAND... 

One of the important properties of dihydrogen ligands, particularly in charged transition metal complexes, is their ability to nndergo heterolytic cleavage [9]. In addition, protonation of transition metal hydrides with acids is a common method for preparation of transition metal dihydrogen complexes ... 

Structure 3.2 Structure proposed for the binuclear Ru dihydrogen complex in ref. 8, where the dihydrogen ligand is binding to two ruthenium atoms. 

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