Coordination Chemistry of Transition Metals with Hydrogen Chalcogenide and Hydrochalcogenido Ligands

Reactivity of uranium(iii) with H2E (E = S, Se, Te): synthesis of a series of mononuclear and dinuclear uranium(iv) hydrochalcogenido complexes

“… 59 H 2 S and its heavier congeners H 2 Se and H 2 Te are known and well-documented precursors for the synthesis of hydrochalcogenides, however, the resultant hydrochalcogenides are rarely stable compounds and subsequent reactions often lead to the formation of metal polychalcogenide clusters or binary metal salts instead. 1 , 9 Furthermore, synthetic work is greatly complicated by the high toxicity and malodor of these gases. With the commercial availability of H 2 S as a solution in THF, reactions with this gas can be carried out under much simpler conditions.…”

“…Remarkably, the resulting complex 1-TeH is both stable at elevated temperatures up to 80 °C and in the presence of light, which contrasts with the very few reported, usually rather unstable, transition metal complexes featuring a TeH – ligand. 1 , 9 Single crystals suitable for X-ray diffraction were obtained via diffusion of n -hexane into a mixture of benzene and DME (7 : 3). The molecular structure of 1-TeH is distinctly different from those of 1-SH and 1-SeH , as it shows a six-coordinate uranium center, located in a distorted octahedral coordination environment ( Fig.…”

Synthesis of Diiron(I) Dithiolato Carbonyl Complexes

“…Thiol complexes of other metals have been well-characterized, for example, [Ru(NH 3 ) 5 (EtSH)] 2+ 120 . The intermediacy of Fe(CO) 4 (RSH) may also arise by the reaction of H 2 Fe(CO) 4 with thiols, which affords Fe 2 ( μ -SR) 2 (CO) 6 quantitatively at 0°C (R = Ph, C 6 F 5 , i -Pr).…”

A complete series of uranium(iv) complexes with terminal hydrochalcogenido (EH) and chalcogenido (E) ligands E = O, S, Se, Te

“…This is due to applications in chemical catalysis and materials science, and were found to be relevant intermediates in bioinorganic chemistry. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] Interest in chalcogenido lanthanide and actinide coordination chemistry also stems from separation and remediation research, employing sulfur-containing chelating ligands. [16][17][18][19][20] The separation chemistry relies on the distinct and highly specific coordination affinity of the f-elements to chalcogenido ligands, which often is attributed to the various degrees of covalency within the 4f/5f metal-ligand bonds.…”