Abfangreaktionen für Arsiniden‐ und Stibiniden‐Komplexe: Addition von Lewisbasen an [(CO) ₅ M] ₂ XR (XAs, Sb; MCr, Mo, W)

Synthesis, structure and reactivity of complexes containing a transition metal–bismuth bond

“…In general, the chelating Lewis base AB substitutes for the chloride, giving a four-coordinate bismuth atom, the geometry about which can be described as pseudo-trigonal bipyramidal. This is in contrast to lighter group 15 analogues which adopt tetrahedral geometries about the central atom [70]. Such Bi I chelate complexes demonstrate some interesting bonding situations.…”

Preparation and characterization of catena-[bromo(tetrahydrofuran-O)(2-thioxo-1,3-dithiole-4,5- dithiolato)antimony(III)], [Br(THF)Sb(dmit)]n

“…3a. Bond lengths and bond angles relating to the coordination of the Sb atom are given in Table 1 [20] and in [(CO) 5 Cr]2Sb(Cl)(THF), 2.236 Å , [21]. The intra-and inter-molecular Sb-S bond lengths in 5 can be compared with the corresponding intra-and inter-molecular bonds [9] compared with the sum of the van der Waals radii of Sb and S of 4.06 Å [19].…”

Phosphine‐Stabilized Pnictinidenes

“…[28] Stabilized by transition metal coordination a stibinidene was characterized as a Ph 3 P‐adduct in [(Ph 3 P)SbMe{W(CO) 5 } 2 ] [Sb−P 2.594(6) Å]. [16a] Thus, with compound 7 a rare case for a phosphine adduct of a stibinidene was isolated.…”

“…[3b] Terminal as well as bridging coordination modes were found for a variety of transition metals. [16] We are currently investigating the chemistry of an intramolecular cyclic germylene-phosphine adduct 1. [17] This lowvalent germanium compound reacts through oxidative addition with element halides of Groups 13 and 14: BX 3 (X=Cl, Br), PhBCl 2 and GeCl 2 .…”