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Reaction of ruthenium complexes containing heterocyclic thiazine–thione ligand

Authors:	Chao-Wan Chang Ying-Chih Lin Gene-Hsiang Lee Yu Wang

Institution:	^a Department of Chemistry, National Overseas Chinese Student University Preparation School, Linkou, Taipei Hsien 244, Taiwan, ROC ^b Department of Chemistry, National Taiwan University, Section 4, Roosevelt Road, Taipei 106, Taiwan, ROC

Abstract:	Treatment of the ruthenium complex Ru]--- Full-size image (3, Ru]=Cp(dppe)Ru) containing a heterocyclic 1,3]-thiazine-4-thione six-membered-ring ligand with various organic halides results in alkylation at the thione sulfur terminus of the ligand to yield Ru]--- Full-size image ]X] (4a, R=CN, X=I; 4b, R=Ph, X=Br; 4c, R=CH=CH₂, X=I, 4d, R=p-C₆H₄CF₃, X=Br). Similarly the reaction of 3 with HgCl₂ at room temperature affords Ru]--- Full-size image ]Cl] (5). Transformation of 5 to the cationic vinylidene complex {Ru]=C=C(Ph)C(O)NHPh}₂Hg₂Cl₆] (6) readily occurred in the air. The structures of 4c and 6 are determined by single crystal X-ray diffraction analysis.

Keywords:	Ruthenium Thiazine–thione Alkylation
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