Title : ( Size‐Dependent Self‐Assembly of Lanthanide‐Based Coordination Frameworks with Phenanthroline‐2,9‐dicarboxylic Acid as a Preorganized Ligand in Hybrid Materials )
Authors: Mahboubeh Alipour , Oluseun Akintola , Axel Buchholz , Masoud Mirzaei Shahrabi , Hossein Eshtiagh Hosseini , Helmar Görls , Winfried Plass ,
Full TextAbstract
A family of lanthanide-based inorganic–organic hybrids, [Ce4(PDA)4(H2O)9(SiW12O40)]·6H2O (1, PDA = 1,10-phenanthroline- 2,9-dicarboxylic acid), [Nd5(PDA)5(H2O)13(OH)- (SiW12O40)]·8H2O (2), [Sm3(PDA)2(H2O)13(OH)(SiW12O40)]· 16.5H2O (3), and [Dy4(PDA)4(H2O)11(SiW12O40)]·7H2O (4), has been hydrothermally synthesized with the [SiW12O40]4– Keggintype anion as a building block. Characterization by IR spectroscopy, elemental analysis, thermogravimetric analysis (TGA), and single-crystal X-ray diffraction revealed that 1–4 are all co ordination polymers with different structural features owing to the lanthanide-contraction effect. Compound 1 is composed of cationic layers interconnected by Keggin anions in three dimensions. Compounds 2 and 3 are 1D rectangular tubelike and 1D ladderlike coordination polymers, respectively. The Keggin anion appears to play a different role in each of these hybrid structures, as its coordination mode varies between mono-, bi-, and tetradentate in 3, 1, and 2, respectively. In 4, the Keggin anions only reside in the interspace between two adjacent 2D cationic layers as discrete counterions. Magnetic measurements indicate that 4 exhibits frequency-dependent alternating-cur- rent (ac) magnetic susceptibilities indicative of slow relaxation of the magnetization.
Keywords
, Size-Dependent; Self-Assembly; Lanthanide-Based Coordination Frameworks; polyoxometalates; Phenanthroline-2, 9-Dicarboxylic Acid; Preorganized Ligand; Hybrid Materials
@article{paperid:1059250,
author = {Alipour, Mahboubeh and Oluseun Akintola and Axel Buchholz and Mirzaei Shahrabi, Masoud and Eshtiagh Hosseini, Hossein and Helmar Görls and Winfried Plass},
title = {Size‐Dependent Self‐Assembly of Lanthanide‐Based Coordination Frameworks with Phenanthroline‐2,9‐dicarboxylic Acid as a Preorganized Ligand in Hybrid Materials},
journal = {European Journal of Inorganic Chemistry},
year = {2016},
volume = {2016},
number = {34},
month = {December},
issn = {1434-1948},
pages = {5356--5365},
numpages = {9},
keywords = {Size-Dependent; Self-Assembly; Lanthanide-Based
Coordination Frameworks; polyoxometalates; Phenanthroline-2;9-Dicarboxylic
Acid; Preorganized Ligand; Hybrid Materials},
}
%0 Journal Article
%T Size‐Dependent Self‐Assembly of Lanthanide‐Based Coordination Frameworks with Phenanthroline‐2,9‐dicarboxylic Acid as a Preorganized Ligand in Hybrid Materials
%A Alipour, Mahboubeh
%A Oluseun Akintola
%A Axel Buchholz
%A Mirzaei Shahrabi, Masoud
%A Eshtiagh Hosseini, Hossein
%A Helmar Görls
%A Winfried Plass
%J European Journal of Inorganic Chemistry
%@ 1434-1948
%D 2016
