The reactions of fac-[Rh(apt)3] (apt: 3-aminopropanethiolate) with PdII and ZnII gave S-bridged RhIII2ZnII trinuclear and RhIII3PdII3 hexanuclear complexes, respectively. The structures of these complexes, determined by single-crystal X-ray crystallography, were quite different from S-bridged structures derived from fac-[Rh(aet)3] (aet: 2-aminoethanethiolate). This is ascribed to the difference in S–Rh–S bite angles between fac-[Rh(apt)3] with six-membered N,S-chelate rings and fac-[Rh(aet)3] with five-membered N,S-chelate rings. The reactions of fac-[Rh(3-aminopropanethiolato-N,S)3] having six-membered chelate rings with PdII and ZnII gave S-bridged RhIII2ZnII trinuclear and RhIII3PdII3 hexanuclear complexes, respectively, the structures of which are entirely different from those derived from fac-[Rh(2-aminoethanethiolato-N,S)3] having five-membered chelate rings.
16 June 2015 in The Journal of Physical Chemistry C
Treatment of fac-[Rh(apt)3] (apt = 3-aminopropanethiolate) with [Cu(CH3CN)4]+ in a 2:3 ratio in water gave a CuI3RhIII2 pentanuclear complex ([1apt]3+), in which two octahedral fac-[Rh(apt)3] units are linked by three linear CuI ions through sulfur bridges. Complex [1apt]3+ was oxidized to produce a CuICuIIRhIII2 tetranuclear complex, in which two fac-[Rh(apt)3] units are linked by linear CuI and square-planar CuII ions. The structure and property of [1apt]3+ were compared with those of the corresponding CuI3RhIII2 complex with 2-aminoethanethiolate.
Three dinuclear palladium(II) complexes with 2,2′-bipyridine (bpy) were synthesized from [Pd(bpy)Cl2] and 3-aminopropanethiol (Hapt) by changing reaction conditions. It was found that Hapt can adopt three different coordination modes (Hapt-κ2S, apt-κN,κ2S, H−1apt-κ2N,κ2S) dependent on its protonation states in this coordination system.