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Author:

Xu, Shan (Xu, Shan.) | Liu, Min (Liu, Min.) | Yang, Yu-Ping (Yang, Yu-Ping.) | Jiang, Yu-Han (Jiang, Yu-Han.) | Li, Zhong-Feng (Li, Zhong-Feng.) | Jin, Qiong-Hua (Jin, Qiong-Hua.) | Wang, Xin (Wang, Xin.) | Xue, Xiao-Nan (Xue, Xiao-Nan.)

Indexed by:

Scopus SCIE

Abstract:

Nine lanthanide complexes with a high L:Ln ratio (4:1), [LnL(4)](OTf)(3) (1-8) (L = tetrakis(O-isopropyl)methylenediphosphonate, OTf = SO3CF3, Ln = Ce, Pr, Nd, Sm, Eu, Gd, Dy, Yb) and [DyL4](OTf)(3)center dot DMF (9) have been synthesized through easy and effective methods in air. Each complex was synthesized by the reaction of lanthanide triflate with the L ligand in a solvent mixture (acetonitrile and DMF for 1-8, dichloromethane and DMF for 9). The above complexes, except for complex 9, were synthesized in the presence of 1,10-phenanthroline. The title complexes were characterized by elemental analyses, IR spectra, single-crystal X-ray diffraction analysis, luminescence, NMR spectra and terahertz time-domain spectroscopy (THz-TDS). Structure analysis shows that complexes 1-9 consist of one cation [LnL(4)](3+) and three triflate anions OTf-. Complexes 1-8 crystallized in the orthorhombic system, space group Pbcn, whereas complex 9 belongs to the space group I222. The cationic [LnL(4)](3+) fragments in complexes 1-8 are self-assembled to construct 2D layers with a (8.2.8.4) net topology by hydrogen bonding interactions. The OTf- cations in 9 are attached directly to the [DyL4](3+) cations to form a 2-fold hydrogen-bonded three-dimensional (3D) cage structure framework. Solid luminescence of complex 5 displays the characteristic bands of Eu3+, due to a long emission lifetime (4.04 ms of D-5(0)) and high absolute emission quantum yield (53.30%). Terahertz (THz) time-domain spectroscopy of the complexes was also studied. (C) 2014 Elsevier Ltd. All rights reserved.

Keyword:

Crystal structure Tetrakis(O-isopropyl)methylenediphosphonate 1,10-Phenathroline Lanthanide triflate Luminescence

Author Community:

  • [ 1 ] [Xu, Shan]Capital Normal Univ, Dept Chem, Beijing 100048, Peoples R China
  • [ 2 ] [Jiang, Yu-Han]Capital Normal Univ, Dept Chem, Beijing 100048, Peoples R China
  • [ 3 ] [Li, Zhong-Feng]Capital Normal Univ, Dept Chem, Beijing 100048, Peoples R China
  • [ 4 ] [Jin, Qiong-Hua]Capital Normal Univ, Dept Chem, Beijing 100048, Peoples R China
  • [ 5 ] [Wang, Xin]Capital Normal Univ, Dept Chem, Beijing 100048, Peoples R China
  • [ 6 ] [Xue, Xiao-Nan]Capital Normal Univ, Dept Chem, Beijing 100048, Peoples R China
  • [ 7 ] [Liu, Min]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100022, Peoples R China
  • [ 8 ] [Yang, Yu-Ping]Minzu Univ China, Sch Sci, Beijing 100081, Peoples R China

Reprint Author's Address:

  • [Jin, Qiong-Hua]Capital Normal Univ, Dept Chem, Beijing 100048, Peoples R China

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Source :

POLYHEDRON

ISSN: 0277-5387

Year: 2015

Volume: 87

Page: 293-301

2 . 6 0 0

JCR@2022

ESI Discipline: CHEMISTRY;

ESI HC Threshold:253

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 17

SCOPUS Cited Count: 14

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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