From Mono- to Polynuclear Coordination Complexes with a 2,2′-Bipyrimidine-4,4′-dicarboxylate Ligand
作者:Piotr W. Zabierowski、Olivier Jeannin、Thomas Fix、Jean-François Guillemoles、Loïc J. Charbonnière、Aline M. Nonat
DOI:10.1021/acs.inorgchem.1c00938
日期:2021.6.7
of 1, [K(H2O)2][Lu(bpd)2] (2), and [(Et3NH)Lu(bpd)2] (3) could be determined by X-ray diffraction, showing the ligand to act as a tetradentate unit with formation of three five-membered chelate rings around the central Ln(III). With the aim of building polynuclear assemblies, the coordination between [Lu(bdp)2]− and [Lu(tta)3(H2O)] units (tta = thenoyltrifluoroacetylacetonate) was also investigated.
研究了配体 2,2'-双嘧啶-4,4'-二羧酸 (H 2 bpd ) 与镧系元素 (III) 离子(Ln = Eu、Tb 或 Lu)的配位特性。H 2 bpd配体及其盐类 [K 2 ( bpd )(H 2 O) 2 ] ( 1 ) 和 [( Alk NH)Lu( bpd ) 2 ] ( Alk = Et、Hex 或 en)的合成, 进行了说明。在 LnCl 3盐(Ln = Lu、Eu 或 Tb)的存在下,形成 [Ln( bpd ) 2 ] -和 [Ln( bpd )(H 2O) x ] +物质通过1 H 核磁共振 (NMR)、分光光度法和分光荧光法滴定在水溶液中进行评估。1 , [K(H 2 O) 2 ][Lu( bpd ) 2 ] ( 2 ) 和[(Et 3 NH)Lu( bpd ) 2 ] ( 3 )的固态结构可以通过X射线测定衍射,显示配体作为四齿单元,在中心 Ln(III) 周围形