Synthesis, structure and characterization of adenine-based aminocarbene complexes of platinum(II)

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• 作者：Tí ; mea Mihá ; ly^a ; ^b ; Martin Bette^a ; Bé ; la Mihá ; ly^a ; ^b ; Jü ; rgen Schmidt^c ; Harry Schmidt^a ; Dirk Steinborn^a ; ^{steinborn@chemie.uni-halle.de}
• 关键词：Platinum complexes ; Aminocarbene complexes ; Platina-¦Â-diketones ; Adenine-based ligands
• 刊名：Journal of Organometallic Chemistry
• 出版年：2013
• 出版时间：1 September, 2013
• 年：2013
• 卷：739
• 期：Complete
• 页码：57-62
• 全文大小：539 K

文摘

The reaction of the dinuclear platina-¦Â-diketone [Pt₂{(COMe)₂H}₂(¦Ì-Cl)₂] (1) with two equivalents of adenine and its methylated derivatives N⁶-R,9-R¡äAde_-H resulted in adenine-based aminocarbene platinum(II) complexes [Pt(COMe)Cl{CMe(N⁶-R,9-R¡äAde_-H)-¦ÊC,¦ÊN}] (R/R¡ä?=?Me/Me, 2; H/Me, 3; H/H, 4) whose identities were confirmed by NMR and IR spectroscopies as well as by high-resolution mass spectrometric investigations. Single-crystal X-ray diffraction analyses of complexes 2 and 4¡¤THF revealed relatively short Pt-C and N-C bonds in the aminocarbene-platinum units, which is in accord with a substantial double bond character of these bonds. The electronic structure of these complexes will be further confirmed by DFT calculations as also the course of reaction.