scholarly journals Coordination Polymers of Scandium(III) and Thiophenedicarboxylic Acid

2021 ◽  
Vol 47 (9) ◽  
pp. 593-600
Author(s):  
A. A. Lysova ◽  
V. A. Dubskikh ◽  
K. D. Abasheeva ◽  
A. A. Vasileva ◽  
D. G. Samsonenko ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Coordination Polymers ◽  
Elemental Analysis ◽  
Metal Organic Frameworks ◽  
X Ray Diffraction ◽  
Phase Purity ◽  
X Ray ◽  
Metal Organic

Abstract Three new metal−organic frameworks based on scandium(III) cations and 2,5-thiophenedicarboxylic acid (H2Tdc) are synthesized: [Sc(Tdc)(OH)]·1.2DMF (I), [Sc(Tdc)(OH)]·2/3DMF (II), and (Me2NH2)[Sc3(Tdc)4(OH)2]·DMF (III) (DMF is N,N-dimethylformamide). The structures of the compounds are determined by single-crystal X-ray structure analysis (CIF file CCDC nos. 2067819 (I), 2067820 (II), and 2067821 (III)). The chemical and phase purity of compound I is proved by elemental analysis, thermogravimetry, X-ray diffraction analysis, and IR spectroscopy.

Positional isomeric effect on the structural variation of Cd(ii) coordination polymers based on flexible linear/V-shaped bipyridyl benzene ligands

CrystEngComm ◽  
2015 ◽  
Vol 17 (3) ◽  
pp. 653-664 ◽  
Author(s):  
Lei-Lei Liu ◽  
Cai-Xia Yu ◽  
Ya-Ru Li ◽  
Jing-Jing Han ◽  
Feng-Ji Ma ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Single Crystal ◽  
Coordination Polymers ◽  
Elemental Analysis ◽  
Structural Variation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Isomeric Effect

Solvothermal reactions of Cd(OAc)2·2H2O with 2,2′-azodibenzoic acid and five positional isomeric N-donor bipyridyl benzene ligands in MeOH/H2O at 170 °C gave rise to five coordination polymers. Complexes 1–5 were characterized by elemental analysis, IR spectroscopy, powder X-ray diffraction, and single-crystal X-ray diffraction.

scholarly journals Reaction of a 3-aryilidene-2-thiohydantoin derivative with polymeric trans-[CuCl2(DMSO)2]n complex: Unexpected isomerization to dinuclear cis-[{CuCl(DMSO)2}(μ-Cl)]2

2020 ◽  
pp. 60-60
Author(s):  
Petar Stanic ◽  
Marko Rodic ◽  
Tanja Soldatovic ◽  
Aleksandar Pavic ◽  
Natasa Radakovic ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Elemental Analysis ◽  
Crucial Role ◽  
Condensation Reaction ◽  
X Ray Diffraction ◽  
Trans Form ◽  
X Ray ◽  
Stable Product

The 3-arylidene-2-thiohydantoin derivative, 3-[(2-hydroxybenzyl-idene)amino]-2-thioxoimidazolidin-4-one, was synthesized in a two-step condensation reaction of 2-hydroxybenzaldehyde, thiosemicarbazide and ethyl chloroacetate. The ligand was structurally characterized by NMR and IR spectroscopy, as well as elemental analysis. In the reaction of the well-known polymeric trans-[CuCl2(DMSO)2]n complex with the polydentate thiohydantoin type ligand, instead of the corresponding copper thiohydantoin complex, unexpectedly, the dinuclear cis-[{CuCl(DMSO)2}(m-Cl)]2 complex (1) was formed predominantly as the final stable product. The structure of the complex 1 was confirmed by single crystal X-ray diffraction analysis. The cis-complex is obtained through assisted isomerization of the trans-form, in which the thiohydantoin derivative has a crucial role.

A series of microporous and robust Ln-MOFs showing luminescent properties and catalytic performances towards Knoevenagel reactions

2021 ◽  
Author(s):  
Qing-Xia Yao ◽  
Miaomiao Tian ◽  
Jun Zheng ◽  
Jintang Xue ◽  
Xuze Pan ◽  
...  
Keyword(s):  
Single Crystal ◽  
Metal Organic Frameworks ◽  
Luminescent Properties ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metal Organic ◽  
Catalytic Performances

A series of microporous Ln(III)-based metal-organic frameworks (1-Ln) have been hydrothermally synthesized by using 4,4',4''-nitrilotribenzoic acid (H3NTB). Single crystal X-ray diffraction analyses show 1-Ln are isostructural and have 3D porous...

scholarly journals Synthesis and structure of macrocyclic dinickel(II) complex with 5-(4-pyridyl)tetrazolate as coligand

2021 ◽  
pp. 3-10
Author(s):  
Sergei V. Voitekhovich ◽  
Berthold Kersting ◽  
Oleg A. Ivashkevich
Keyword(s):  
Ir Spectroscopy ◽  
Single Crystal ◽  
Elemental Analysis ◽  
Dinuclear Complex ◽  
X Ray Diffraction ◽  
X Ray

The dinuclear nickel(II) complex [Ni2LmClO4] + , where Lm represents a 24-membered macrocyclic hexaaza-dithiophenolate ligand, reacts with 5-(4-pyridyl)tetrazole (PyrCN4H) to give the dinuclear complex [Ni2Lm(PyrCN4)]+ . The new complex was both isolated as perchlorate or tetraphenylborate salts and characterised by elemental analysis and IR spectroscopy. The structure of [Ni2Lm(PyrCN4)]BPh4 ⋅ MeCN was determined by single crystal X-ray diffraction, showing that tetrazolate units are in a N2,N3-bridging mode to generate dioctahedral N3Ni(µ-S)2(µ-N4CPyr)NiN3 core.

A zinc(II) metal–organic framework with a novel topology formed from 4,4′,4′′-nitrilotribenzoate and 4,4′-bipyridine ligands

2015 ◽  
Vol 71 (9) ◽  
pp. 799-803 ◽  
Author(s):  
Meng Zhao ◽  
Jian Su ◽  
Jun Zhang ◽  
Jie-Ying Wu ◽  
Yu-Peng Tian
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
Solvothermal Method ◽  
Metal Organic Framework ◽  
Topological Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Paddle Wheel ◽  
Metal Organic ◽  
Organic Framework

A metal–organic framework with a novel topology, poly[sesqui(μ2-4,4′-bipyridine)bis(dimethylformamide)bis(μ4-4,4′,4′′-nitrilotribenzoato)trizinc(II)], [Zn3(C21H12NO6)2(C10H8N2)1.5(C3H7NO)2]n, was obtained by the solvothermal method using 4,4′,4′′-nitrilotribenzoic acid and 4,4′-bipyridine (bipy). The structure, determined by single-crystal X-ray diffraction analysis, possesses three kinds of crystallographically independent ZnIIcations, as well as binuclear Zn2(COO)4(bipy)2paddle-wheel clusters, and can be reduced to a novel topology of a (3,3,6)-connected 3-nodal net, with the Schläfli symbol {5.62}4{52.6}4{58.87} according to the topological analysis.

Synthesis, Structure and Properties of a Novel Metal-Organic Coordination Polymer, [Zn (NH3)2(BDC)]n

2013 ◽  
Vol 575-576 ◽  
pp. 30-36 ◽  
Author(s):  
Ning Ning Wu ◽  
Can Xiong Guo ◽  
Gui An Wu ◽  
Zhao Cai ◽  
Wan Hong He
Keyword(s):  
Coordination Polymer ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Self Assembly ◽  
Terephthalic Acid ◽  
Differential Scanning Calorimetric ◽  
X Ray Diffraction ◽  
X Ray ◽  
Acid Ligand ◽  
Metal Organic

A novel one-dimensional metal-organic coordination polymer, [Zn (NH3)2(BDC)]n (BDC=1,4-benzenedicaboxylate), has been synthesized by solvent evaporation method through self-assembly of Zn (II) salts with terephthalic acid ligand in ammonia aqueous solution. Single crystal X-ray diffraction analysis indicated that each Zn (II) was coordinated by two nitrogen donors from two NH3 and two oxygen counter donors from terephthalic acid ligand. The adjacent zigzag chains are arranged in a parallel fashion and linked by interchain hydrogen bonding interaction and π-π stacking interactions into higher-dimensional framework. The compound has also been characterized by CHN elemental analyses, Single crystal X-ray diffraction analysis, powder X-ray diffraction (PXRD) analysis, Fourier transform infrared (FT-IR) spectra, Thermalgravimetric-differential scanning calorimetric (TG-DSC) and Solid-state nuclear magnetic resonance (NMR), etc. Results showed that the framework of compound was stable at the temperature up to 246°C. The desolvated product [Zn (BDC)]n, which was obtained by removal of molecular NH3 from [Zn (NH3)2(BDC)]n, can be transferred to the different skeleton structures through coordinating different small hydrogen-bond-forming molecules.

New Cu(II), Co(II), and Ni(II) complexes with thieno[2,3-b]pyridine and 2-methylthieno[2,3-b]pyridine as ligands: Synthesis and crystal structures

2009 ◽  
Vol 63 (3) ◽  
Author(s):  
Ján Halgaš ◽  
Viera Kolenová ◽  
Zuzana Števíková ◽  
Lucia Perašínová ◽  
Jozef Kožíšek
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
Crystal Structures ◽  
Elemental Analysis ◽  
Zinc Chloride ◽  
Coordination Compounds ◽  
Biological Activities ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ft Ir

AbstractAlthough thienopyridines attract attention because of their biological activities, they have not been used as ligands in coordination compounds. Thieno[2,3-b]pyridine was prepared by known procedures; by reduction of 2-nitrothiophene, and reaction of the resulting 2-thienyl ammonium salt with malondialdehyde tetramethylacetal in the presence of zinc chloride. The same procedure was used for the preparation of a new derivative, 2-methylthieno[2,3-b]pyridine, starting from 2-methyl-5-nitrothiophene. The thienopyridines were used in the synthesis of coordination compounds. Chlorides, isothiocyanates, acetates, and chloroacetates of copper(II), nickel(II), or cobalt(II) were used as starting salts. The prepared complexes were characterized by elemental analysis and FT IR. Structures of the four complexes were determined by single-crystal X-ray diffraction analysis.

1,3,5-Tris[(trimethylstannyl)ethynyl]- 1,3,5-trimethyl-1,3,5-trisilacyclohexane

2016 ◽  
Vol 71 (1) ◽  
pp. 81-84 ◽  
Author(s):  
Eugen Weisheim ◽  
Hans-Georg Stammler ◽  
Norbert W. Mitzel
Keyword(s):  
Mass Spectrometry ◽  
Ir Spectroscopy ◽  
Single Crystal ◽  
Elemental Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

AbstractThe reaction of 1,3,5-triethynyl-1,3,5-trimethyl- 1,3,5-trisilacyclohexane with (dimethylamino)trimethylstannane afforded 1,3,5-tris[(trimethylstannyl)ethynyl]- 1,3,5-trimethyl-1,3,5-trisilacyclohexane with tin-functionalised ethynyl groups. The compound was characterized by single-crystal X-ray diffraction, elemental analysis, mass spectrometry, NMR and FT-IR spectroscopy.

scholarly journals Remodelling a Shp: Transmetallation in a Rare-Earth Cluster-Based Metal–Organic Framework

2021 ◽  
Author(s):  
Hudson de Aguiar Bicalho ◽  
P. Rafael Donnarumma ◽  
Victor Quezada-Novoa ◽  
Hatem M. Titi ◽  
Ashlee J Howarth
Keyword(s):  
Rare Earth ◽  
Single Crystal ◽  
Surface Area ◽  
De Novo ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Metal Exchange ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metal Organic

<div> <p>Post-synthetic modification (PSM) of metal–organic frameworks (MOFs) is an important strategy for accessing MOF analogues that cannot be easily synthesized <i>de novo</i>. In this work, the rare-earth (RE) cluster-based MOF, Y-CU-10, with <b>shp</b> topology was modified through transmetallation using a series of RE ions, including: La(III), Nd(III), Eu(III), Tb(III), Er(III), Tm(III), and Yb(III). In all cases, metal-exchange higher than 70 % was observed, with reproducible results. All transmetallated materials were fully characterized and compared to the parent MOF, Y-CU-10, in regards to crystallinity, surface area, and morphology. Additionally, single-crystal X-ray diffraction (SCXRD) measurements were performed to provide further evidence of transmetallation occurring in the nonanuclear cluster nodes of the MOF. </p> </div>

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