Carbonyl trichlorostannate complexes of platinum: chemistry and 119Sn, 195Pt,and 13C NMR spectroscopy |
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| Affiliation: | 1. Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China;2. Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, PR China;3. Key Laboratory of Humid Subtropical Eco-geographical Process, Ministry of Education, Fujian Normal University, Fuzhou 350007, PR China;4. Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, PR China |
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| Abstract: | The reactions of the carbonyl anion [PtCl3(CO)]- with SnCl2 in the presence of CO in both methylene chloride and acetone are reported. In the former solvent, only PtII-SnCl3 species are formed. These have been identified by 13C, 119Sn and 195Pt NMR measurements as cis-[PtCl2(SnCl3)(CO)]-, (I), trans- [PtCl(SnCl3)2(CO)]-, (II), and [Pt(SnCl3)4(CO)]2-, (III). Salts of these complexes have been isolated. In contrast, when acetone is the solvent, reduction of the platinum occurs to give two new complexes. On the basis of NMR measurements, we assign one of these as the PtI dimer [Pt2(SnCl3)4(CO)2]2-, (IV), and the other as a platinum triangle (VI) containing terminal CO ligands and two types of Sn ligand. The PtII compound (IV) can also be generated by treating a CH2Cl2 solution of trans-[PtCl(SnCl3)2- (CO)]-, (II), with dihydrogen. NMR spectroscopic data, including those from measurements on samples of the complexes containing 13C-enriched CO, are reported and discussed. |
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