Unprecedented Pt(II) complex of an asymmetric 2,6-diacetylpyridine bis(⁴N-substituted thiosemicarbazone) ligand

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• 作者：Ana I. Matesanz ; Pilar Souza ; ^{pilar.souza@uam.es}
• 关键词：Asymmetric N3S coordination ; Bis(thiosemicarbazone) ; 2 ; 6-diacetylpyridine ; Platinum(II) complexes ; Thiol function ; X-ray diffraction
• 刊名：Inorganic Chemistry Communications
• 出版年：2013
• 出版时间：January, 2013
• 年：2013
• 卷：27
• 期：Complete
• 页码：5-8
• 全文大小：858 K

文摘

Reaction of 2,6-diacetylpyridine bis(⁴N-o-tolylthiosemicarbazone), H₂L¹, with K₂PtCl₄ and further recrystallization in DMSO/MeOH of the [PtL¹] complex obtained, led to the isolation of the novel platinum complex, [PtL²], which was structurally characterized by single crystal X-ray diffraction. The molecular structure shows that the ligand has undergone an unexpected chemical transformation viz. reduction of one of the terminal phenyl rings into cyclohexyl. The resulted asymmetrical ligand acts a dianionic tetradentate donor, coordinating to the platinum(II) center in a square planar geometry through the N_pyridinic atom and the N_iminic and the S atoms from one thiosemicarbazone arm, the fourth coordination position is occupied by the N_hydrazinic atom of the other arm.