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Synthesis, structure and optical limiting properties of organoruthenium-chalcogenide clusters |
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| Authors: | Mark G Humphrey Brian W Skelton Allan H White Brian F Yates |
| Institution: | a Department of Chemistry, Australian National University, Canberra, ACT, 0200, Australia b School of Chemistry, University of Tasmania, Private Bag 75, Hobart, TAS, 7001, Australia c Laser Physics Centre, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT, 0200, Australia d Chemistry M313, University of Western Australia, Crawley, WA 6009, Australia |
| Abstract: | Treatment of Ru3(CO)12 with Ph3PS affords the compounds Ru3(μ3-S)2(CO)9 − n(PPh3)n] (n = 1 (1a), 2 (2a)) and Ru3(μ3-S)(μ3-CO)(CO)7(PPh3)2] (3a) as the major products. Single crystal X-ray diffraction studies of Ru3(μ3-S)2(CO)8(PPh3)] and Ru3(μ3-S)(μ3-CO)(CO)7(PPh3)2] show these two classes of compounds to contain square pyramidal Ru3S2 and trigonal pyramidal Ru3S metal cores, respectively, with the latter being isostructural to the analogous selenide cluster compound. The clusters Ru3(μ3-E)2(CO)9 − n(PPh3)n] (E = S, n = 1; E = Se, n = 2) readily undergo ligand displacement reactions with PPh3 to afford the compounds Ru3(μ3-E)2(CO)6(PPh3)3] (E = S, 5a; E = Se 5b). The mixed chalcogenide cluster, Ru3(μ3-S)(μ3-Se)(CO)7(PPh3)2] (6), was prepared from the reaction of Ru3(μ3-S)(μ3-CO)(CO)7(PPh3)2] and SePPh3. The optical limiting properties of the complexes 1a,b, 2a,b, 5a,b have been measured by the Z-scan technique employing 40 ns pulses at 523 nm; power limiting was observed for all clusters under our experimental conditions. |
| Keywords: | Chalcogenide Ruthenium Cluster X-ray structure Optical power limiting |
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