Systematic Study of Mutually Inclusive Influences of Temperature and Substitution on the Coordination Geometry of Co(II) in a Series of Coordination Polymers and Their Properties

2016 ◽  
Vol 16 (6) ◽  
pp. 3170-3179 ◽  
Author(s):  
Manasi Roy ◽  
Satirtha Sengupta ◽  
Sukhen Bala ◽  
Sudeshna Bhattacharya ◽  
Raju Mondal
Keyword(s):  
Coordination Polymers ◽  
Systematic Study ◽  
Coordination Geometry

scholarly journals Isotypic one-dimensional coordination polymers:catena-poly[[dichloridocadmium]-μ-5,6-bis(pyridin-2-yl)pyrazine-2,3-dicarboxylato-κ2N5:N6] andcatena-poly[[dichloridomercury(II)]-μ-5,6-bis(pyridin-2-yl)pyrazine-2,3-dicarboxylato-κ2N5:N6]

2016 ◽  
Vol 72 (8) ◽  
pp. 1214-1218 ◽  
Author(s):  
Montserrat Alfonso ◽  
Helen Stoeckli-Evans
Keyword(s):  
Hydrogen Bonds ◽  
Metal Ions ◽  
Coordination Polymers ◽  
Rotation Axis ◽  
Dimethyl Ester ◽  
Polymer Chains ◽  
Coordination Geometry ◽  
One Dimensional ◽  
The Difference ◽  
Title One

The isotypic title one-dimensional coordination polymers, [CdCl2(C18H14N4O4)]n, (I), and [HgCl2(C18H14N4O4)]n, (II), are, respectively, the cadmium(II) and mercury(II) complexes of the dimethyl ester of 5,6-bis(pyridin-2-yl)pyrazine-2,3-dicarboxylic acid. In both compounds, the metal ions are located on a twofold rotation axis and a second such axis bisects the Car—Carbonds of the pyrazine ring. The metal ions are bridged by binding to the N atoms of the two pyridine rings and have anMN2Cl2bisphenoidal coordination geometry. The metal–Npyrazinedistances are much longer than the metal–Npyridinedistances; the difference is 0.389 (2) Å for the Cd—N bonds but only 0.286 (5) Å for the Hg—N bond lengths. In the crystals of both compounds, the polymer chains are linkedviapairs of C—H...Cl hydrogen bonds, forming corrugated slabs parallel to theacplane.

A Systematic Study on the Stability of Porous Coordination Polymers against Ammonia

2014 ◽  
Vol 20 (47) ◽  
pp. 15611-15617 ◽  
Author(s):  
Takashi Kajiwara ◽  
Masakazu Higuchi ◽  
Daisuke Watanabe ◽  
Hideyuki Higashimura ◽  
Teppei Yamada ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Systematic Study ◽  
Porous Coordination Polymers ◽  
The Stability

Three one-dimensional coordination polymers based on 1,1′-bis(pyridin-4-ylmethyl)-2,2′-bi-1H-benzimidazole and HgX2(X= Cl, Br and I)

2013 ◽  
Vol 70 (1) ◽  
pp. 37-42 ◽  
Author(s):  
Ai-Guo Li ◽  
Qi-Kui Liu ◽  
Yan-An Li ◽  
Zhi-Xian Liu ◽  
Yu-Bin Dong
Keyword(s):  
Coordination Polymers ◽  
Free Ligand ◽  
Organic Ligand ◽  
Coordination Complexes ◽  
Coordination Geometry ◽  
Asymmetric Unit ◽  
Compound I ◽  
One Dimensional ◽  
Bridging Ligand ◽  
Dimensional Network

A new 2,2′-bi-1H-benzimidazole bridging organic ligand, namely 1,1′-bis(pyridin-4-ylmethyl)-2,2′-bi-1H-benzimidazole, C26H20N6,Lor (I), has been synthesized and used to create three new one-dimensional coordination polymers,viz.catena-poly[[dichloridomercury(II)]-μ-1,1′-bis(pyridin-4-ylmethyl)-2,2′-bi-1H-benzimidazole], [HgCl2(C26H20N6)]n, (II), and the bromido, [HgBr2(C26H20N6)]n, (III), and iodido, [HgI2(C26H20N6)]n, (IV), analogues. Free ligandLcrystallizes with two symmetry-independent half-molecules in the asymmetric unit and eachLmolecule resides on a crytallographic inversion centre. In structures (II)–(IV), theLligand is also positioned on a crystallographic inversion centre, whereas the Hg centre resides on a crystallographic twofold axis. Compound (I) adopts ananticonformation in the solid state and forms a two-dimensional network in the crystallographicbcplaneviaπ–π and C—H...π interactions. The three HgIIcoordination complexes, (II)–(IV), have one-dimensional zigzag chains composed ofLand HgX2(X= Cl, Br and I), and the HgIIcentres are in a distorted tetrahedral [HgX2N2] coordination geometry. Complexes (III) and (IV) are isomorphous, whereas complex (II) displays an interesting conformational difference from the others,i.e.a twist in the flexible bridging ligand.

Recent Advances in Supramolecular Design and Assembly of Silver(I) Coordination Polymers

2006 ◽  
Vol 59 (1) ◽  
pp. 3 ◽  
Author(s):  
Chun-Long Chen ◽  
Bei-Sheng Kang ◽  
Cheng-Yong Su
Keyword(s):  
Supramolecular Chemistry ◽  
Coordination Polymers ◽  
Structural Diversity ◽  
Short Review ◽  
Potential Functions ◽  
Supramolecular Interactions ◽  
Coordination Geometry ◽  
Recent Advances ◽  
Physical And Chemical ◽  
Design And Construction

The supramolecular chemistry of Ag(i) coordination assemblies continues to attract attention due to their versatile structural diversity and potential physical and chemical functions. This article provides a short review of recent advances in the design and construction of Ag(i) coordination polymers with special emphasis on the Ag(i) ion coordination geometry, ligand functionality, and supramolecular interactions. The potential functions of Ag(i) coordination polymers are briefly summarized.

scholarly journals Unravelling the chemical design of spin-crossover nanoparticles based on iron(ii)–triazole coordination polymers: towards a control of the spin transition

2015 ◽  
Vol 3 (30) ◽  
pp. 7946-7953 ◽  
Author(s):  
Mónica Giménez-Marqués ◽  
M. Luisa García-Sanz de Larrea ◽  
Eugenio Coronado
Keyword(s):  
Coordination Polymers ◽  
Systematic Study ◽  
Spin Crossover ◽  
Spin Transition ◽  
Chemical Design

We present a systematic study of the key synthetic parameters that control the growth of Fe–triazole spin-crossover nanoparticles and the effect of this size modulation on the spin transition.

Comprehensively understanding the steric hindrance effect on the coordination sphere of Pb2+ ions and photophysical nature of two luminescent Pb(ii)-coordination polymers

2019 ◽  
Vol 48 (36) ◽  
pp. 13841-13849 ◽  
Author(s):  
Xiao-Shuo Wu ◽  
Yue-Rou Tang ◽  
Jian-Lan Liu ◽  
Lifeng Wang ◽  
Xiao-Ming Ren
Keyword(s):  
Coordination Sphere ◽  
Coordination Polymers ◽  
Steric Hindrance ◽  
Photophysical Properties ◽  
Coordination Geometry

Two luminescent Pb(ii)-coordination polymers show different coordination geometry of lead(ii) ions and distinct photophysical properties.

Coordination Polymers Constructed from TCNQ2– Anions and Chelating Ligands

2014 ◽  
Vol 67 (12) ◽  
pp. 1871 ◽  
Author(s):  
Brendan F. Abrahams ◽  
Robert W. Elliott ◽  
Richard Robson
Keyword(s):  
Coordination Polymers ◽  
3D Structure ◽  
Three Dimensional ◽  
Binding Mode ◽  
Coordination Geometry ◽  
Chelating Ligands ◽  
Metal Centre ◽  
3D Network ◽  
2D And 3D ◽  
Dianionic Form

Coordination polymers containing tetracyanoquinodimethane (TCNQ) in its dianionic form, TCNQ–II, have been formed by combining the acid form of the dianion, TCNQH2, with divalent metal centres in the presence of chelating ligands such as 2,2′-bipyridine (bipy) and 1,10-phenanthroline (phen). When MnII or CdII is employed, two-dimensional (2D) corrugated sheet structures with the formula MII(TCNQ–II)L (M = Mn, Cd; L = bipy, phen) are obtained. In contrast, when CoII is used as the metal centre a complex three-dimensional (3D) structure of composition [CoII(TCNQ–II)(phen)] is formed. Despite the significant differences between the 2D and 3D network structures, the metal coordination geometry and the binding mode of the TCNQ dianion are very similar in all cases.

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