Structural diversity of bimetallic rhodium and iridium half sandwich dithiolato complexes.
The synthesis of a range of rhodium(iii) and iridium(iii) half sandwich complexes with aryl dithiolato ligands of varying geometry and flexibility are reported. These include dinuclear [Cp*M(S-R-S)]2 complexes 3b and 4b, M = Rh, Ir; S-R-S = naphthalene-1,8-dithiolate (b) and four dinuclear complexes bearing bridging dithiolate ligands [(Cp*M)2(μ2-Cl)(μ2-S-R-S)]Cl 3c, 4c, 5b, 6b, M = Rh, Ir; S-R-S = naphthalene-1,8-dithiolate (b) or acenaphthene-5,6-dithiolate (c). The introduction of a less rigid biphenyl dithiolate backbone resulted in the tetranuclear dicationic complex [(Cp*Rh)4(S-R-S)3]Cl2 (3d), S-R-S = biphenyl-2,2'-dithiolate (d) with dithiolate ligands in two different bridging modes. All new complexes were fully characterised by multinuclear NMR, IR, Raman and MS spectroscopy and single crystal X-ray diffraction.
University of St Andrews, EaStCHEM School of Chemistry, St Andrews, Fife KY16 9ST, UK. jdw3@st-and.ac.uk.
Phillip S
PS
Nejman
Brian
B
Morton-Fernandez
David J
DJ
Moulding
Kasun S
KS
Athukorala Arachchige
David B
DB
Cordes
Alexandra M Z
AM
Slawin
Petr
P
Kilian
J Derek
JD
Woollins