Die reaktion von (C5Me5)2Ru2(CO)4 mit S8, ein Beitrag zur synthese von ruthenium-polysulfidkomplexen

Abstract

Reaction of Cp*,Ru 2(CO)4 (Cp" = $-CsMe,)

Cocrystallization of (μ-S2)2– and (μ-S)2– and Formation of an [η2-S3N(SiMe3)2] Ligand from Chalcogen Reduction by (N2)2– in a Bimetallic Yttrium Amide Complex

“…The niobium complex shows a similar difference in the metal–sulfur distances (2.481 and 2.600 Å, i.e., 0.119 Å) compared to 5 [2.673(6) and 2.840(6) Å, i.e., 0.167 Å], but the two S–S distances in the (S 3 ) 2– unit of the niobium complex are nearly the same (2.038 and 2.042 Å). In the ruthenium complex, the metal–sulfur distances are closer in length to one another, 2.255(4) and 2.362(6) Å, than those in 5 and the S–S distances are more disparate, 2.014(7) versus 2.110(5) Å . The titanium complex has 2.358(3) and 2.474(3) Å Ti–S distances with a 2.025(3) Å S–S bond between the two coordinating sulfur atoms and a 2.061(3) Å S–S bond involving the third sulfur attached to the C 5 H 5 ring.…”

“…21 The 1.704(2) Å S−N distance in 5 is also similar to those in these two organic complexes, 1.668(2) and 1.680(2) Å, in the former 14 and 1.661(3) Å in the latter. 20,21 Three examples were found in the crystallographic literature in which an S 3 unit is bound η 2 to one metal and η 1 to another atom: (C 5 H 5 ) 2 Ru 2 (CO)S 5 , 26 (C 5 H 4 t Bu) 3 Nb 3 S 12 , 27 and (C 5 H 5 )-Ti(C 5 H 5 S 5 ). 28 The first two examples have an S 3 ligand bridging two metal centers in polymetallic complexes, and the third example has a TiS 3 C linkage formed by thermal rearrangement of (C 5 H 5 ) 2 TiS 5 .…”

Synthesis and Structural Characterization of Some Selenoruthenates and Telluroruthenates

“…14-19 A number of different compounds of the type M(μ-Q n ) 2 M (where Q = S, Se, Te; M = metal) have been synthesized and structurally characterized. The most common of this type are M(μ-Q 2 ) 2 M six-membered ring compounds of Co, Ru, , and Ti, and M(μ-Q 3 ) 2 M eight-membered ring compounds of Ti and Ru . Also known are the ten-membered [Au(μ-S 4 ) 2 Au] 2- ring and the unsymmetrically bridged compounds [(ReCp(CO)) 2 (μ-S 2 )(μ-S 3 )] and [Re 2 (μ 2 -S) 2 (μ 2 -S 3 ) 2 (S 4 ) 2 ]·4H 2 O .…”

“…The most common of this type are M(µ-Q 2 ) 2 M six-membered ring compounds of Co, 20 Ru, 21,22 and Ti, 23 and M(µ-Q 3 ) 2 M eight-membered ring compounds of Ti 24 and Ru. 25 Also known are the tenmembered [Au(µ-S 4 ) 2 Au] 2ring 26 and the unsymmetrically bridged compounds [(ReCp(CO)) 2 (µ-S 2 )(µ-S 3 )] 27 and [Re 2 -(µ 2 -S) 2 (µ 2 -S 3 ) 2 (S 4 ) 2 ]‚4H 2 O. 28 A number of compounds with the M(µ 2 -S 2 )(µ 2 -S) 2 M core have also been reported, where M ) V, 29,30 Fe, [31][32][33][34] Ru, 35 and Cr.…”

Synthesis and crystal structure of a binuclear ruthenium compound containing [Ru2(.mu.-S5)(.mu.-S2CNMe2)(S2CNMe2)(CO)2(PPh3)2] and [Ru2(.mu.-S6)(.mu.-S2CNMe2)(S2CNMe2)(CO)2(PPh3)2]: the first ruthenium compounds with bridging S5 and S6 ligands

“…S52' and Sé2" chains coordinate to ruthenium atoms in any compound. Sulfur-bridged ruthenium compounds so far reported have their sulfur atoms in the form of MS42" (M = Mo, W, Re),1•2•5•12disulfido,3•13 RSH,6 RS",4 and S32',13 and it has become (PPtbh] with thermal ellipsoids drawn at the 30% probability level.Table III. Selected Bond Distances (Á) and Angles (deg) for 1 i v i d u a l n o t d i r e c t l y a s s o c i a t e d w i t h s c i t e i s p r o h i b i t e d .…”