Chalcogenate-bridged heterometallic complexes containing tricarbonyl rhenium combined with cymene ruthenium

Abstract

The reaction of Re(CO) 3 (THF) 2 Cl with (Cymen)RuCl 2 (Cymen = p methyl iso propylbenzene) in benzene gave the known heterometallic complex (Cymen)Ru(μ Cl) 3 Re(CO) 3 (I), which was converted to the heterometallic complex (Cymen)Ru(μ S tert Bu) 3 Re(CO) 3 (II) on treatment with tert butylmercaptan and triethylamine. Treatment of I with sodium tellurophenolate in THF results in the formation of the ionic complex [(Cymen)Ru(μ TePh) 3 Ru(Cymen)] + [(CO) 3 Re(μ TePh) 3 Re(CO) 3 ] -(III) with homobinuclear cat ion and anion. The structures of II and III were determined by X ray diffraction (CIF files CCDC nos. 1022559 (II) and 1022560 (III)).

Rhenium(V) Complexes with Selenolato‐ and Tellurolato‐Substituted Schiff Bases – Released PPh3as a Facile Reductant

“…Short Re–Se bonds are also established in binuclear rhenium compounds with Re–Re bonds or diselenolene complexes , . Most of the few rhenium complexes with tellurolato ligands are carbonyl compounds of Re(I) and they have Re–Te bond lengths between 2.760 and 2.811 Å , , , . Very recently, a series of [Re V O(aryltellurolate) 4 ] – and [Re III (aryltellurolate) 3 (PPh 3 )(CH 3 CN)] complexes was prepared and structurally characterized .…”

“…Only a few of such compounds have been characterized crystallographically . The majority of them contains the metal in low oxidation states and tricarbonylrhenium(I) species dominate . Organoselenolato and ‐tellurolato complexes with rhenium in higher oxidation states are even more scarce despite their proposed potentially beneficial catalytic properties .…”

Oxidorhenium(V) and Rhenium(III) Complexes with Arylselenolato and ‐tellurolato Ligands

“…This may mainly be due to the inherent instability of the precursor molecules. Only a few compounds containing ReÀ Se and ReÀ Te bonds have been crystallographically characterized and the majority of them contain rhenium in low oxidation states, [12,[17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] where phenylselenolates or -tellurolates act as bridging ligands between two tricarbonylrhenium(I) fragments. [21][22][23][24][25][26][27][28][29][30][31][32][33] Reports about well-defined rhenium(III) or rhenium(V) complexes containing arylselenolato or -tellurolato ligands are even more rare.…”

“…Only a few compounds containing ReÀ Se and ReÀ Te bonds have been crystallographically characterized and the majority of them contain rhenium in low oxidation states, [12,[17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] where phenylselenolates or -tellurolates act as bridging ligands between two tricarbonylrhenium(I) fragments. [21][22][23][24][25][26][27][28][29][30][31][32][33] Reports about well-defined rhenium(III) or rhenium(V) complexes containing arylselenolato or -tellurolato ligands are even more rare. In addition to some oxidorhenium compounds, [34][35][36][37] recently a series of phenylimido chelates of rhenium(V) has been reported with the corresponding diselenides and ditellurides as starting materials.…”