Preparation, x-ray molecular structure, and electronic structure of the first 16-electron ruthenium dihydrogen complexes RuH(H2)X(PCy3)2

Abstract

Scheme 111 EgN OMS 2,Gdl-tert-butylpyridine CBuOH, 25', 24 -36 h I 14(80%) DBU B 1 -780 =+ 00 -1 2 h a t 0° v-v==LSupplementary Material Available: Sample procedures for the reactions described herein and spectral data and copies of the ' H NMR spectra for the products (22 pages). Ordering information is given on any current masthead page. (21) Ali, A.; Sarantakis, D.; Weinstein, B. J. Chem. Soc., Chem. Commun. 1991, 940. Jaenicke, L.; Akintobi, T.; Muller, D. G. Angew. Chem., Inf. Ed. Engl. 1971,10,492. Jaenicke, L.; Akintobi, T.; Marner, F.-J. Justus Liebigs Ann. Chem. 1973, 1252. Kajiwara, T.; Nakatomi, T.; Sasaki, Y.; Hatanaka, A. Agric. Eiol. Chem. 1980, 44, 2099. Schotten, T.; Boland, W.; Jaenicke, L. Helo. Chim. Acta 1985, 68, 1186. Dorsch, D.; Kunz, E.; Helmchen, G. Tetrahedron Lerr. 1985, 26, 3319.(22) An alternative biogenetic hypothesis involves hydrogen atom abstraction from a methylene-interrupted triene. Jaenicke, L.; Boland, W.

A manganese hydride molecular sieve for practical hydrogen storage under ambient conditions

“…Note the involvement of the hydride ligands; this is an example of the previously observed cis-hydride effect in which the hydride ligands bend towards the H 2 unit and participate in the bonding. 43 We find a maximum load of 5 H 2 on MnH 2 , where the average hydrogen binding energy (HBE) is 9.0 kJ mol À1 per H 2 (enthalpy at 298 K of 4.8 kJ mol À1 ), consistent with measurements of MOFs with Mn(II) linkers, which can bind significant amounts of H 2 only at cryogenic temperatures. 24 To better mimic and rationalize experiment, we explored Mn hydride structures containing 5 Mn centers which are consistent with the KMH-1 XPS and IR data, i.e.…”

Exceedingly Facile PhX Activation (X=Cl, Br, I) with Ruthenium(II): Arresting Kinetics, Autocatalysis, and Mechanisms

“…Carbonyl‐ and PPh 3 ‐ligated Ru complexes can cleave the less inert CX bonds of iodo‐ and bromobenzene and ‐toluene, but only at 125 °C 6. With bulky electron‐rich Cy 3 P co‐ligands, Ru can activate the PhI bond at ambient temperature,7a,b but the ArCl bond requires 80 °C 7c. In general, ruthenium‐catalyzed arylation reactions with chloroarenes occur only at 120–150 °C 8.…”

1,2,3-Triazolylidene ruthenium(ii)-cyclometalated complexes and olefin selective hydrogenation catalysis

“…25 Although this species could not be isolated, the broad 1 H NMR signal is consistent with facile interchange of the hydrides and η 2 -H 2 sites.…”