Coordination chemistry of the metalloligand [Pt2(μ-S)2(PPh3)4] with nickel(II) complexes - an electrospray mass spectrometry directed synthetic study |
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| Authors: | S-W Audi Fong Jagadese J Vittal Shelley Cramp |
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| Institution: | a Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
b Department of Chemistry, University of Waikato, Private Bag 3105, Hamilton, New Zealand |
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| Abstract: | The reactivity of Pt2(μ-S)2(PPh3)4] towards a range of nickel(II) complexes has been probed using electrospray ionisation mass spectrometry coupled with synthesis and characterisation in selected systems. Reaction of Pt2(μ-S)2(PPh3)4] with Ni(NCS)2(PPh3)2] gives Pt2(μ-S)2(PPh3)4Ni(NCS)(PPh3)]+, isolated as its BPh4 − salt; the same product is obtained in the reaction of Pt2(μ-S)2(PPh3)4] with NiBr2(PPh3)2] and KNCS. An X-ray structure determination reveals the expected sulfide-bridged structure, with an N-bonded thiocyanate ligand and a square-planar coordination geometry about nickel. A range of nickel(II) complexes NiL2, containing β-diketonate, 8-hydroxyquinolinate, or salicylaldehyde oximate ligands react similarly, giving Pt2(μ-S)2(PPh3)4NiL]+ cations. |
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| Keywords: | Mixed-metal complexes Sulfide ligands Electrospray mass spectrometry Platinum complexes Nickel complexes |
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