Dischwefel und Diselen als starke Acceptorliganden in (?5?C5H5) Re (CO)2S2 und [?5?C5(CH3)5]Mn (CO)2Se2

Nonheme binuclear transition metal complexes with hydrosulfide and polychalcogenides

“…195 A notable exception to these general . 207 Quite similar to the observation noted in the case of transition metal-polysulfido complexes, most of the transition metalpolyselenido complexes are again either organometallic compounds 118,178,181,[208][209][210][211][212][213] or contain Se-/P-donor ligands [214][215][216] or contain only Se-donor ligands. [217][218][219][220][221][222] On the other hand, only a handful of non-organometallic transition metal-polyselenido complexes have been reported.…”

“…4,8,[168][169][170][171][172][173][174] Consequently, the synthesis, characterization, and reactivity of a large number of organometallic mono-, bi-and poly-nuclear transition metal-polysulfido complexes are available in the literature. 126,173,[175][176][177][178][179][180][181][182][183][184][185][186][187][188][189][190][191][192][193] In parallel to the ample availability of organometallic transition metal-polysulfido complexes, several examples of binuclear first-row transition metal-polysulfido complexes (non-organometallic) with N-/O-donor ligands are also available, [194][195][196][197][198][199][200][201][202][203][204][205][206] albeit to a lesser extent. While most of these complexes feature the smallest polysulfido unit (S 2 2À ), 194,[197]…”

Generation and Reactivity of Polychalcogenide Chains in Binuclear Cobalt(II) Complexes

“…Polysulfide anions (S n 2– ) are classic examples of the catenation property of sulfur and are quite well-known in the literature. ,− The synthesis, structural diversity, and reactivity of an appreciable number of mono-, bi-, and poly nuclear compounds of polysulfide involving transition metals, lanthanides, and main group elements have been reported previously. − It may, however, be noted that most of these metal–polysulfido compounds are strictly organometallic compounds. − ,− ,− ,,,, While reports on several binuclear transition metal-polysulfido compounds are available in the literature, ,,,− the majority of these compounds are, however, metal sulfides and clusters with only S-donor ligands (HS – , S 2– , and S n 2– ). Representative examples of such clusters include [Cu 2 (S 3 )­(S 4 )] 2– , [Ni 2 (μ-S 4 )] 2+ , [Ni 2 (μ-S 5 )] 2+ , [Co 2 (μ-S 4 )] 2+ , [Co 2 (μ-S 5 )] 2+ , [Fe 2 (μ-S 5 )] 2+ , [Fe 2 (μ-S 4 )] 2+ , [Fe 2 (μ-S) 2 (S 5 ) 2 ] 2– , [S 5 Fe­(μ-S) 2 FeS 5 ] 2– , [Mn 2 (μ-S 4 )] 2+ , and [Mn 2 (μ-S 5 )] 2+ as well as few higher nuclearity clusters .…”

“…50−78 It may, however, be noted that most of these metal−polysulfido compounds are strictly organometallic compounds. [55][56][57][60][61][62][63][64][65][67][68][69]71,72,74,77 While reports on several binuclear transition metal-polysulfido compounds are available in the literature, 50,51,55,79−85 the majority of these compounds are, however, metal sulfides and clusters with only S-donor ligands (HS − , S 2− , and S n 2+ , and [Mn 2 (μ-S 5 )] 2+ as well as few higher nuclearity clusters. 86 Moreover, the mono-, bi-, and trinuclear polysulfido complexes of first-row transition metals in N/O-donor ligands 82,83,87−101 are relatively less explored.…”

“…In contrast to the plethora of reports on the chemistry of transition metal–polysulfido complexes in general, the chemistries of polyselenides and polytellurides are comparatively less developed. ,,− While an appreciable number of transition metal–polyselenido and relatively a smaller number of transition metal–polytellurido compounds are now available in the literature, most of these examples feature either metal–polyselenido/polytellurido compounds having Se/Te/P-donor ligands − or only Se/Te-donor ligands (polyselenide/polytelluride) ,,− or organometallic compounds, ,,− while some other reports include [Fe­(Se 3 )­L 2 ] 1– (L = N (Dipp)­SiMe 3 , Dipp = 2,6-diisopropylphenyl), [Cu 2 (Se 2 )­(Bn 3 TACH) 2 ] 2+ and [Mn­(dien) 2 ] 2 [SbSe 4 Cu­(μ-Se 4 )] (dien = diethylenetriamine) . The majority of these metal–polychalcogenido compounds are organometallic compounds.…”