Thiobenzamide reacted with the complexes
 [MCl
   2
 (PPh
   3
 )
   3
 ],
 [MH(X)(CO)(PPh
   3
 )
   3
 ] (M = Ru or Os,
 X = H or Cl) and
 mer-[IrH
   3
 (PPh
   3
 )
   3
 ] in boiling
 toluene to afford the products
 [MS(NH)CPh}
   2
 (PPh
   3
 )
   2
 ],
 [MXS(NH)CPh}(CO)(PPh
   3
 )
   2
 ] and
 [IrH
   2
 S(NH)CPh}(PPh
   3
 )
   2
 ]
 respectively. The crystal structure of
 [OsS(NH)CPh}
   2
 (PPh
   3
 )
   2
 ]
 confirms the expected bis(N,S-chelate) formulation and has established
 the presence of cis-phosphorus, cis-nitrogen and
 trans-sulfur donor atom pairs within a highly distorted
 octahedral co-ordination sphere. Thiobenzoic acid reacted with
 [MCl
   2
 (PPh
   3
 )
   3
 ] and
 [MH(X)(CO)(PPh
   3
 )
   3
 ] under similar conditions to
 yield [MS(O)CPh}
   2
 (PPh
   3
 )
   2
 ]
 and [MS(O)CPh}
   2
 (CO)(PPh
   3
 )
   2
 ]
 respectively. The reactions of thiobenzoic acid with
 mer-[IrH
   3
 (PPh
   3
 )
   3
 ] under
 conditions of increasing severity give
 [IrH
   2
 S(O)CPh}(PPh
   3
 )
   3
 ],
 [IrHS(O)CPh}
   2
 (PPh
   3
 )
   2
 ] and
 [IrS(O)CPh}
   3
 (PPh
   3
 )
   2
 ] the
 last two of which on carbonylation afford
 [IrHS(O)CPh}
   2
 (CO)(PPh
   3
 )
   2
 ]
 and [IrS(O)CPh}
   3
 (CO)(PPh
   3
 )
   2
 ]
 respectively. The crystal structure of
 [IrHS(O)CPh}
   2
 (PPh
   3
 )
   2
 ] has
 established the presence of trans phosphorus and trans
 sulfur donor atom pairs, with the η
   1
 - and
 η
   2
 -thiobenzoate ligands sharing a meridional set of three
 co-ordination sites. However, the NMR spectra of this complex show two
 high-field 
   1
 H triplets and two
 
   31
 P-
   1
 H} singlets. Possible explanations
 for this anomalous NMR behaviour, which is also found for the
 corresponding thioacetate, are advanced.
                                    硫代苯酰胺与复合物[MCl₂(PPh₃)₃]、[
MH(X)(CO)(PPh₃)₃](M = Ru 或 Os,X = H 或 Cl)以及mer-[IrH₃(PPh₃)₃]在沸腾的
甲苯中反应,产生了产品[MS(NH)CPh}₂(PPh₃)₂]、[MXS(NH)CPh}(CO)(PPh₃)₂]和[IrH₂S(NH)CPh}(PPh₃)₂]。复合物[OsS(NH)CPh}₂(PPh₃)₂]的晶体结构确认了预期的双(N,S-螯合)结构,并证实了在高度扭曲的八面体配位环境中存在顺式
磷、顺式氮和反式
硫供体原子对。
硫代苯甲酸在类似条件下与[MCl₂(PPh₃)₃]和[
MH(X)(CO)(PPh₃)₃]反应,分别生成[MS(O)CPh}₂(PPh₃)₂]和[MS(O)CPh}₂(CO)(PPh₃)₂]。
硫代苯甲酸与mer-[IrH₃(PPh₃)₃]在逐渐加剧的条件下反应,生成[IrH₂S(O)CPh}(PPh₃)₃]、[IrHS(O)CPh}₂(PPh₃)₂]和[IrS(O)CPh}₃(PPh₃)₂],后两者通过羰基化反应得到[IrHS(O)CPh}₂(CO)(PPh₃)₂]和[IrS(O)CPh}₃(CO)(PPh₃)₂]。复合物[IrHS(O)CPh}₂(PPh₃)₂]的晶体结构确定了存在反式
磷和反式
硫供体原子对,其中η₁-和η₂-
硫代苯甲酸配体共享一组横向各三个配位位点。然而,该配合物的NMR光谱显示两个高场的¹H三重态和两个³¹P-¹H}单重态。对这种异常的NMR行为(在相应的
硫代乙酸盐中也发现)的可能解释得到了提出。