%0 Journal Article
%A Ge, Fa-Yuan
%A Ma, Xin
%A Guo, Dan-Dan
%A Zhu, Li-Na
%A Deng, Zhao-Peng
%A Huo, Li-Hua
%A Gao, Shan
%D 2017
%T Syntheses, Structural
Evolutions, and Properties of
Cd(II) Coordination Polymers Induced by Bis(pyridyl) Ligand with Chelated
or Protonated Spacer and Diverse Counteranions
%U https://acs.figshare.com/articles/journal_contribution/Syntheses_Structural_Evolutions_and_Properties_of_Cd_II_Coordination_Polymers_Induced_by_Bis_pyridyl_Ligand_with_Chelated_or_Protonated_Spacer_and_Diverse_Counteranions/4884713
%R 10.1021/acs.cgd.7b00174.s001
%2 https://acs.figshare.com/ndownloader/files/8198477
%K 3 D framework
%K single-crystal X-ray diffraction
%K Complex 2 exhibits
%K 10 complexes
%K protonated spacer
%K Cd 3
%K Cd 2
%K coordination modes
%K PL
%K BDC
%K Cd 2 LCl 4
%K L molecules
%K n pcu
%K interpenetrated sql layer
%K H 2 O
%K Diverse Counteranions Hydrothermal reaction
%K cation
%K benzene dicarboxylate dianion
%X Hydrothermal
reaction of Cd(II) metal salts, diverse organic acids,
as well as flexible bis(pyridyl) ligand leads to the formation of
10 complexes, namely, [Cd2LCl4]n (1), [Cd(H2L)(SO4)2(H2O)2]n·6nH2O (2), [CdL(malonate)]n·5nH2O (3), [Cd2L(malonate)Cl2(H2O)]n·nH2O (4), [Cd2(H2L)(succinate)3]n·4nH2O (5), [Cd2L(fumarate)2(H2O)2]n·2nH2O (6), [Cd2L(m-BDC2–)2]n·2nH2O (7), [Cd2(L)(p-BDC2–)2(H2O)3]n·3nH2O (8), [Cd3(L)2(p-BDC2–)3(H2O)4]n·nH2O (9), and [Cd3(H2L)(p-BDC2–)2(SO4)2(H2O)3]n·2nH2O (10) (L = N,N′-bis(pyridin-3-ylmethyl)ethane-1,2-diamine, m-BDC2– = m-benzene dicarboxylate
dianion, p-BDC2– = p-benzene dicarboxylate dianion), which have been characterized by
elemental analysis, infrared, thermogravimetric analysis, PL, powder and single-crystal
X-ray diffraction. Structural analyses indicate that the diverse coordination
modes of the bis(pyridyl) ligand with a chelated or protonated spacer,
the feature of different inorganic and organic anions, can effectively
influence the topological structures of these complexes. Complex 1 presents a three-dimensional (3D) hybrid network which is
accomplished by the interconnection of adjacent Cd(II) cations through
L molecules and μ2-Cl– anions.
Complex 2 exhibits an interesting pseudo 2-fold interpenetrated
network formed by the interconnection of a [Cd-H2L2+]n pcu net and [SO42+-H2O]n pcu net. In complexes 3 and 4, adjacent Cd(II) cations are all bridged by dicarboxylate and L
to generate a sql layer. In contrast, complex 5 presents 3-fold parallel interpenetrated sql layer
owing to the protonated spacer of H2L2+ cation
which extends the size of the quadrate window. The organic dicarboxylates
in complexes 6 and 7 present more abundant
coordination modes which join adjacent Cd(II) cations together with
L molecules, thus giving rise to a different 3D framework with sra and snk topology. The p-BDC2– dianions in complexes 8, 9, and 10 present different coordination modes and join
adjacent Cd(II) cations together with L molecules and H2L2+ cations to form a diverse ladder chain, tfc and new (44.611)(66) topology.
Luminescent investigation reveals that the emission maximum of these
10 complexes varies from 376 to 450 nm.
%I ACS Publications