A series of helical coordination polymers based on two racemic bis(pyridylmethylene) propane-1,2-diamine ligands: relationship of conformations, structures and properties

CrystEngComm ◽  
2019 ◽  
Vol 21 (47) ◽  
pp. 7249-7259 ◽  
Author(s):  
Li-Na Zhu ◽  
Zhao-Peng Deng ◽  
Li-Hua Huo ◽  
Shan Gao

The self-assembly of d10 metal salts and two racemic bis(pyridyl) diamine ligands generates ten complexes, showing diverse helical and wavelike chains, (4,4) layers, as well as 3D sqc and uog nets.

CrystEngComm ◽  
2021 ◽  
Author(s):  
Jarosław Chojnacki ◽  
Michał Mońka ◽  
Illia E. Serdiuk ◽  
Piotr Bojarski ◽  
Tadeusz Połoński ◽  
...  

The influence of ligand chirality on the self-assembly and spectroscopic properties of copper(i) halide coordination polymers was investigated.


2015 ◽  
Vol 68 (2) ◽  
pp. 322 ◽  
Author(s):  
Wenlong Liu ◽  
Mengqiang Wu ◽  
Xueying Wang ◽  
Wei Wang ◽  
Dayu Liu ◽  
...  

Using a hydrothermal synthesis, the self-assembly of MnII ions and 1,4-bis(1-imidazol-yl)-2,5-dimethyl benzene with two dicarboxylate ligands, 2-nitrobenzene-1,4-dicarboxylic acid (2-H2ata) and 5-methylbenzene-1,3-dicarboxylic acid (5-CH3-H2ip) constructed two interesting coordination polymers: [Mn(2-ata)(bimb)]n (1) and {[Mn(5-CH3-ip)(bimb)1.5]·2H2O}n (2), where bimb refers to 1,4-bis(1-imidazol-yl)-2,5-dimethyl benzene. Their structures were determined by single-crystal X-ray diffraction, elemental analysis, and infrared spectroscopy. Complex 1 exhibits a 2-fold interpenetrated pcu net. Complex 2 shows an unusual polycatenated 2D+2D→3D framework. In addition, the solid-state photoluminescent properties of 1 and 2 were investigated at room temperature.


2010 ◽  
Vol 10 (2) ◽  
pp. 995-1016 ◽  
Author(s):  
Hong-Ye Bai ◽  
Jian-Fang Ma ◽  
Jin Yang ◽  
Ying-Ying Liu ◽  
Hua-Wu ◽  
...  

2015 ◽  
Vol 44 (3) ◽  
pp. 1292-1302 ◽  
Author(s):  
Lakshmi Kanta Das ◽  
Carlos J. Gómez-García ◽  
Ashutosh Ghosh

Three new 2D coordination polymers of different networks with significant variation in magnetic properties have been synthesized by changing the central metal in the trinuclear nodes.


2020 ◽  
Author(s):  
Yuyang Miao ◽  
Shibo Lv ◽  
Daoyuan Zheng ◽  
Yuhan Liu ◽  
Dapeng Liu ◽  
...  

Abstract Porphyrin-based metal coordination polymers (MCPs) have attracted numerous attention due to their great promise application in phototherapy including photodynamic therapy (PDT) and photothermal therapy (PTT). However, the detailed self-assembly process of porphyrin-based MCPs still remains poorly understood. This work provides a detailed study of the self-assembly process of MCPs constructed by Mn2+ and TCPP (TCPP: 4,4′,4′′,4′′′-(Porphine-5,10,15,20-tetrayl)tetrakis(benzoic acid)) in aqueous solution. Unlike traditional nucleation and growth mechanism, we discover that there is a metastable metal-organic intermediate which is kinetically favored in the self-assembly process. And the metastable metal-organic intermediate nanotape structures could convert into thermodynamically favored nanosheets through disassembling into monomers followed by reassembling process. Moreover, the two structurally different assemblies exhibit distinct photophysical performances. The intermediate Mn-TCPP aggregates show good light-induced singlet oxygen 1O2 generation for PDT while the thermodynamic favored stable Mn-TCPP aggregates exhibit good photothermal conversion ability as photothermal agents (PTAs). This study could facilitate controlling self-assembly pathway to fabricate complex MCPs with desirable applications.


2019 ◽  
Author(s):  
Jonathan Kephart ◽  
Zachary Hecht ◽  
Brooke N. Livesay ◽  
Matthew P. Shores ◽  
V. Codrina Popescu ◽  
...  

<div><div><div><p>Substoichiometric aerobic oxidation of the high-spin organometallic compound (tmeda)Fe(CH2tBu)2 (tmeda = N,N,N’,N’- tetramethylethylenediamine) in toluene or THF solution leads to the self-assembly of a magic-sized all-ferrous oxide cluster containing the Fe9O6 subunit and bearing organometallic and diamine ligands. Mössbauer studies of the cluster and the reference complex (tmeda)Fe(OCPh3)2 are consistent with the all-ferrous assignment, and magnetometry reveal considerable antiferromagnetic coupling between Fe atoms in the cluster and frustrated antiferromagnetic interactions between clusters in the solid state.</p></div></div></div>


2013 ◽  
Vol 68 (3) ◽  
pp. 277-283 ◽  
Author(s):  
Sheng-Chun Chen ◽  
Jing Qin ◽  
Zhi-Hui Zhang ◽  
Xiao-Xiao Cai ◽  
Jian Gao ◽  
...  

Two new polymeric MnII complexes, {[Mn(1,2-BDC-F4)(H2O)3](EtOH)}n (1) and [Mn(1,2- BDC-F4)(H2O)2(DMF)]n (2), have been prepared from the reaction of MnII acetate with 3,4,5,6- tetrafluoro-benzene-1,2-dicarboxylic acid (1,2-H2BDC-F4) using different solvents, and characterized by elemental analysis, IR spectroscopy, thermogravimetric (TG) analysis, and single-crystal Xray structure analysis. Both complexes crystallize in the triclinic space group P1̄ and have similar one-dimensional double chain structures, consisting of a unique arrangement of 8-membered and 14- membered rings. The effects of solvent as ligand and/or guest on the self-assembly processes of the supramolecular networks and on their photoluminescence properties in the solid state are discussed.


CrystEngComm ◽  
2014 ◽  
Vol 16 (3) ◽  
pp. 359-368 ◽  
Author(s):  
Zhu-Yan Zhang ◽  
Zhao-Peng Deng ◽  
Xian-Fa Zhang ◽  
Li-Hua Huo ◽  
Hui Zhao ◽  
...  

2008 ◽  
Vol 2008 (10) ◽  
pp. 1573-1583 ◽  
Author(s):  
Eszter Holló-Sitkei ◽  
Gábor Tárkányi ◽  
László Párkányi ◽  
Tünde Megyes ◽  
Gábor Besenyei

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