Synthesis, structure and luminescence of {Zn2Ln(OH)} (Ln = Eu, Gd, Tb) complexes with a triangular metal core

被引:18
作者
Kiskin, Mikhail A. [1 ]
Varaksina, Evgenia A. [2 ,3 ,4 ]
Taydakov, Ilya V. [2 ,3 ]
Eremenko, Igor L. [1 ,3 ]
机构
[1] Russian Acad Sci, NS Kurnakov Inst Gen & Inorgan Chem, Leninsky Prosp 31, Moscow 119991, Russia
[2] Russian Acad Sci, PN Lebedev Phys Inst, Leninsky Prosp 53, Moscow 119991, Russia
[3] Russian Acad Sci, AN Nesmeyanov Inst Organoelement Cpds, Vavilova St 28, Moscow 119991, Russia
[4] Moscow Inst Phys & Technol, Inst Sky Lane 9, Dolgoprudnyi 141700, Moscow Region, Russia
基金
俄罗斯科学基金会;
关键词
Zn-Ln complexes; Heterometallic; X-ray; Luminescence; Triplet state energy; LANTHANIDE(III) COMPLEXES; PHOTOPHYSICAL PROPERTIES; TERBIUM(III) COMPLEXES; CRYSTAL-STRUCTURE; QUANTUM YIELD; EUROPIUM; LIGANDS; CHEMISTRY; EMISSION; STATES;
D O I
10.1016/j.ica.2018.05.037
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Heterometallic {Zn-Ln}-complexes [Zn(2)Ln(OH)(Piv)(4)(NO3)(2)(pyzphen)(2)], where Ln is Eu (1), Gd (2) or Tb (3), Piv-is an anion of pivalic acid and pyzphen is pyrazino[2,3-f][1,10] phenanthroline, were synthesized. Crystallographic cell parameters and XRPD study show the compounds to be isostructural. The crystal structure of 3 was determined by single crystal X-ray analysis. The complexes contained two pyzphen ligands coordinated by Zn ions. Inter-and intra-molecular interactions between aromatic fragments of pyzphen resulted in the formation of a stack structure. The triplet state energy of pyzphen in complex 2 is 22200 cm(-1). Analysis of the luminescence of 1 and 3 showed a low efficiency of ligand-to-metal energy transfer.
引用
收藏
页码:85 / 89
页数:5
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