Displacement of ligands in [PtBr₂(en)](en = ethylenediamine) by β- and γ-mercaptoamines

Synthesis and crystal structure of thiolate-bridged dinuclear platinum(II) complexes

“…1). The average Pt-S bond lengths in 1 and 2 are equal to ~2.3 Å (Table 2), which is consistent with the data for structurally related complexes containing both aliphatic [24] and aromatic [25,26] ammine ligands. The average Pt-N bond length in 1 and 2 (~2.03 Å) approaches that in platinum complexes with aromatic amines [25][26][27][28].…”

“…The average Pt-N bond length in 1 and 2 (~2.03 Å) approaches that in platinum complexes with aromatic amines [25][26][27][28]. The Pt-N bond in platinum complexes with aliphatic amines (in the trans position with respect to thiolate ligand) is longer (2.3-2.4 Å) [24] due to stronger trans-effect of thiols, which is comparable to the trans-effect of aromatic amines [21]. This may favor removal of the amine ligand from the metal coordination sphere [19].…”

Heteropolytopic phosphanylarylthiolato ligands: formation of cis isomers of nickel(ii), palladium(ii) and platinum(ii) complexes with 1-P(Biph)-2-SHC6H4 (Biph = 1,1′-biphenyl-2,2′-diyl)

“…The structures of several trinuclear complexes of platinum with bridging sulfur atoms have been described. 21,24,25 Geometry-related structures were found in the platinum complex of 2-(dimethylamino)ethanethiol, [{PtBr(μ-SCH 2 CH 2 NMe 2 -κ 2 N, S)} 3 ], which contains a central Pt 3 S 3 ring with nearly symmetrical Pt-S-Pt thiolato bridges [Pt(1)-S(1) 2.255(4) Å, Pt(1)-S(3) 2.285(4) Å] 25 and in the trimer [PtI{(μ-S-SC 6 H 4 -2-PPh 2 )-κ 2 S, P}] 3 . 21 In 4, each sulfur atom is coordinated to two platinum atoms with one shorter (trans to iodine, av.…”

Structural Preferences in Phosphanylthiolato Platinum(II) Complexes

“…The crystal structure reveals a sulfur‐bridging edge‐sharing cyclic trinuclear complex with square‐planar coordination geometry around the platinum atoms (Figure ). Related structures were found for aminoalkylthiolato, [PtBr(μ‐SCH 2 CH 2 NMe 2 ‐κ 2 N , S )] 3 , phosphanylarylthiolato, [PtI(μ‐SC 6 H 4 ‐2‐PPh 2 ‐κ 2 P , S )] 3 and [PtI{μ‐SC 6 H 4 ‐2‐P(1,1′‐biphenyl)‐κ 2 P , S }] 3, and arsanylarylthiolato ligands, [PtI(μ‐SC 6 H 4 ‐2‐PAs 2 ‐κ 2 As , S )] 3 , but complex 2 is, to our knowledge, the first example with phosphanylalkylthiolato ligand.…”