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• 作者：Karlheinz Sü ; nkel ; ^{suenk@cup.uni-muenchen.de} ; Ramona Branzan ; Stefan Weigand
• 关键词：2-Pyridylmetallocenes ; Cycloplatination ; Crystal structures
• 刊名：Inorganica Chimica Acta
• 出版年：2013
• 出版时间：1 April, 2013
• 年：2013
• 卷：399
• 期：Complete
• 页码：193-199
• 全文大小：812 K

文摘

The 2-pyridylmetallocenes [C₅H₃R(2-C₅H₄N)]ML_n (1a-e, ML_n = FeCp, RuCp, Mn(CO)₃, R = H, CH₃) react with cis-[PtCl₂(DMSO)₂] to give the cycloplatinated complexes ¦Ò-Pt{L_nM[C₅H₂(2-C₅H₄N)(R)]}Cl (DMSO) (ML_n = FeCp (R = H: 2a; R = Me: 2b), RuCp (R = H, 3a; R = Me, 3b), Mn(CO)₃ (R = H, 4)). The reaction of 1a with the chiral sulfoxide complexes cis-[PtCl₂{S(O)Me(p-C₆H₄Me)}₂] or K[PtCl₃S(O)Me(p-C₆H₄Me)] yields a mixture of ¦Ò-Pt{CpFe[C₅H₂(2-C₅H₄N)(R)]}Cl[S(O)Me(p-C₆H₄Me)] diastereomers (R_pR_S/S_pS_S)- and (R_pS_S/S_PR_S)-5. Treatment of 2a with sodium pentane-2,4-dionate (¡°Na(acac)¡±) gives the bischelate ¦Ò-Pt{CpFe[C₅H₃(2-C₅H₄N)]}(acac) (6a). Refluxing solutions of 2a with glycine in the presence of sodium methoxide yields the amino acidato complex Pt{CpFe[C₅H₃(2-C₅H₄N)]}(gly) 6b. The molecular structures of 2a, b, 3a and 6a have been determined by X-ray diffraction. 2a, b and 3a show a trans-N, S configuration of the pyridine nitrogen and the DMSO sulfur atoms.