scholarly journals Computing Novel Multiplicative Zagreb Connection Indices of Metal Organic Networks

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Usman Ali
Keyword(s):  
Three Dimensional ◽  
Structural Diversity ◽  
Recent Decade ◽  
Organic Ligands ◽  
Complex Structures ◽  
The Novel ◽  
Crystalline Materials ◽  
Nano Structures ◽  
Metal Organic ◽  
Organic Networks

Metal organic networks (MONs) are defined as one, two and three dimensional unique complex structures of porous material and subclass of polymer’s coordination. These networks also show extreme surface area, morphology, excellent chemical stability, large pore volume, highly crystalline materials. The major advantages of MONs are tailorability, structural diversity, versatile applications, highly controllable nano-structures and functionality. So, the multi-functional applications of these MONs are made them more helpful tools in many fields of science in recent decade. In this paper, we light on the two different MONs with respect to the number of increasing layers of metal and organic ligands together. We define the novel multiplicative Zagreb connection indices (ZCIs) such that multiplicative fourth ZCI and multiplicative fifth ZCI. We also compute the main results for multiplicative Zagreb connection indices of two different MONs (zinc oxide and zinc silicate).

Efficient chemosensors for toxic pollutants based on photoluminescent Zn(II) and Cd(II) metal-organic networks

2021 ◽  
Author(s):  
Luis David Rosales-Vazquez ◽  
Alejandro Dorazco-González ◽  
Victor Sanchez-Mendieta
Keyword(s):  
Optical Sensors ◽  
Three Dimensional ◽  
High Sensitivity ◽  
Environmental Research ◽  
Toxic Pollutants ◽  
Sensitivity And Selectivity ◽  
Metal Organic ◽  
Analytical Tools ◽  
Organic Networks

Optical sensors with high sensitivity and selectivity, as important analytical tools for chemical and environmental research, can be accomplished by straightforward synthesis of luminescent one-, two- and three-dimensional Zn(II) and...

scholarly journals Hydrothermal Synthesis and Structural Investigation of a Crystalline Uranyl Borosilicate

Inorganics ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 25
Author(s):  
Kristen A. Pace ◽  
Vladislav V. Klepov ◽  
Mark D. Smith ◽  
Travis Williams ◽  
Gregory Morrison ◽  
...  
Keyword(s):  
Synthesis Method ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Exploratory Research ◽  
The Novel ◽  
Orthorhombic Space Group ◽  
Crystalline Materials ◽  
Waste Remediation ◽  
And Storage ◽  
X Ray Absorption

The relevance of multidimensional and porous crystalline materials to nuclear waste remediation and storage applications has motivated exploratory research focused on materials discovery of compounds, such as actinide mixed-oxoanion phases, which exhibit rich structural chemistry. The novel phase K1.8Na1.2[(UO2)BSi4O12] has been synthesized using hydrothermal methods, representing the first example of a uranyl borosilicate. The three-dimensional structure crystallizes in the orthorhombic space group Cmce with lattice parameters a = 15.5471(19) Å, b = 14.3403(17) Å, c = 11.7315(15) Å, and V = 2615.5(6) Å3, and is composed of UO6 octahedra linked by [BSi4O12]5− chains to form a [(UO2)BSi4O12]3− framework. The synthesis method, structure, results of Raman, IR, and X-ray absorption spectroscopy, and thermal stability are discussed.

From an organic ligand to a metal–organic coordination polymer, and to a metal–organic coordination polymer–cocrystal composite: a continuous promotion of the proton conductivity of crystalline materials

CrystEngComm ◽  
2020 ◽  
Vol 22 (8) ◽  
pp. 1414-1424
Author(s):  
Xiaoqiang Liang ◽  
Tingting Cao ◽  
Li Wang ◽  
Changzheng Zheng ◽  
Yamei Zhao ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Proton Conductivity ◽  
Coordination Polymers ◽  
Organic Ligand ◽  
Organic Ligands ◽  
Crystalline Materials ◽  
Composite Formation ◽  
New Strategy ◽  
Metal Organic

A new strategy was proposed to increase proton conductivities in metal–organic coordination polymers (MOCPs) commencing from organic ligands, i.e. coordination inducement and MOCP–cocrystal composite formation.

scholarly journals Four Mixed-Ligand Zn(II) Three-Dimensional Metal-Organic Frameworks: Synthesis, Structural Diversity, and Photoluminescent Property

Polymers ◽  
2017 ◽  
Vol 9 (12) ◽  
pp. 644 ◽  
Author(s):  
Chih-Chieh Wang ◽  
Szu-Yu Ke ◽  
Chia-Wen Cheng ◽  
Yu-Wen Wang ◽  
Hsiao-Shan Chiu ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Structural Diversity ◽  
Mixed Ligand ◽  
Photoluminescent Property ◽  
Metal Organic

Mixed-ligand MnIIand CuIIcomplexes with alternating 2,2′-bipyrimidine and terephthalate bridges

2015 ◽  
Vol 71 (2) ◽  
pp. 110-115 ◽  
Author(s):  
Dejan Poleti ◽  
Jelena Rogan ◽  
Marko V. Rodić ◽  
Lidija Radovanović
Keyword(s):  
Three Dimensional ◽  
Mirror Plane ◽  
Site Symmetry ◽  
The Novel ◽  
Ligand Exchange Reaction ◽  
Face To Face ◽  
Distorted Octahedral ◽  
Metal Organic ◽  
Monodentate Ligands ◽  
Parallel Fashion

The novel polymeric complexescatena-poly[[diaquamanganese(II)]-μ-2,2′-bipyrimidine-κ4N1,N1′:N3,N3′-[diaquamanganese(II)]-bis(μ-terephthalato-κ2O1:O4)], [Mn2(C8H4O4)2(C8H6N4)(H2O)4]n, (I), andcatena-poly[[[aquacopper(II)]-μ-aqua-μ-hydroxido-μ-terephthalato-κ2O1:O1′-copper(II)-μ-aqua-μ-hydroxido-μ-terephthalato-κ2O1:O1′-[aquacopper(II)]-μ-2,2′-bipyrimidine-κ4N1,N1′:N3,N3′] tetrahydrate], {[Cu3(C8H4O4)2(OH)2(C8H6N4)(H2O)4]·4H2O}n, (II), containing bridging 2,2′-bipyrimidine (bpym) ligands coordinated as bis-chelates, have been preparedviaa ligand-exchange reaction. In both cases, quite unusual coordination modes of the terephthalate (tpht2−) anions were found. In (I), two tpht2−anions acting as bis-monodentate ligands bridge the MnIIcentres in a parallel fashion. In (II), the tpht2−anions act asendo-bridges and connect two CuIIcentres in combination with additional aqua and hydroxide bridges. In this way, the binuclear [Mn2(tpht)2(bpym)(H2O)4] entity in (I) and the trinuclear [Cu3(tpht)2(OH)2(bpym)(H2O)4]·4H2O coordination entity in (II) build up one-dimensional polymeric chains along thebaxis. In (I), the MnIIcation lies on a twofold axis, whereas the four central C atoms of the bpym ligand are located on a mirror plane. In (II), the central CuIIcation is also on a special position (site symmetry \overline{1}). In the crystal structures, the packing of the chains is further strengthened by a system of hydrogen bonds [in both (I) and (II)] and weak face-to-face π–π interactions [in (I)], forming three-dimensional metal–organic frameworks. The MnIIcation in (I) has a trigonally deformed octahedral geometry, whereas the CuIIcations in (II) are in distorted octahedral environments. The CuIIpolyhedra are inclined relative to each other and share common edges.

scholarly journals The Positional Isomeric Effect on the Structural Diversity of Cd(II) Coordination Polymers, Using Flexible Positional Isomeric Ligands Containing Pyridyl, Triazole, and Carboxylate Fragments

Molecules ◽  
2018 ◽  
Vol 23 (10) ◽  
pp. 2634 ◽  
Author(s):  
Jonathan Cisterna ◽  
Catherine Araneda ◽  
Pilar Narea ◽  
Alejandro Cárdenas ◽  
Jaime Llanos ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Three Dimensional ◽  
Structural Diversity ◽  
Luminescent Properties ◽  
Xrd Analysis ◽  
Polymer Complexes ◽  
Structures And Properties ◽  
Metal Organic ◽  
Isomeric Effect ◽  
Single Crystal Xrd Analysis

To systematically investigate the influence of the positional isomeric effect on the structures of polymer complexes, we prepared two new polymers containing the two positional isomers ethyl 5-methyl-1-(pyridin-3-yl)-1H-1,2,3-triazole-3-carboxylate (L1) and ethyl-5-methyl-1-(pyridin-3-yl)-1H-1,2,3-triazole-4-carboxylate (L2), as well as Cd(II) ions. The structures of the metal–organic frameworks were determined by a single crystal XRD analysis. The compound [Cd(L1)2·4H2O] (1), is a hydrogen bond-induced coordination polymer, whereas the compound [Cd(L2)4·5H2O]n (2) is a three-dimensional (3-D) coordination polymer. Their structures and properties are tuned by the variable N-donor positions of the ligand isomers. This work indicates that the isomeric effect of the ligand isomers plays an important role in the construction of the Cd(II) complexes. In addition, the thermal and luminescent properties are reported in detail.

Structural Diversity of Four Lanthanide Metal-Organic Frameworks based on 2,6-Naphthalenedicarboxylate: Synthesis, Structures and Photoluminescent Properties

CrystEngComm ◽  
2021 ◽  
Author(s):  
Ana Chatenever ◽  
Joe E Matsuoka ◽  
Stanley J Wang ◽  
Beatriz Ehlke ◽  
Pierre LeMagueres ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Structural Diversity ◽  
Metal Organic ◽  
Lanthanide Metal ◽  
Organic Linker

We report the crystal structures of four different neutral lanthanide (Ln = La, Nd, Eu and Gd) metal-organic frameworks based on the organic linker 2,6-naphthalenedicarboxylate (NDC). The materials are three-dimensional...

Exchange coupled Co(ii) based layered and porous metal–organic frameworks: structural diversity, gas adsorption, and magnetic properties

2020 ◽  
Vol 49 (13) ◽  
pp. 4012-4021 ◽  
Author(s):  
Ajit Kumar Kharwar ◽  
Sanjit Konar
Keyword(s):  
Magnetic Properties ◽  
Gas Adsorption ◽  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Porous Metal ◽  
Structural Diversity ◽  
Two Dimensional ◽  
Metal Organic

A co-operative ligand approach leads to beautiful two-dimensional and three-dimensional architectures with interesting magnetic properties.

scholarly journals Structural Diversity of MOFs Constructed by Tricarboxylate Ligand

2014 ◽  
Vol 70 (a1) ◽  
pp. C1002-C1002
Author(s):  
Jie Han ◽  
Xiao-Li Zhao
Keyword(s):  
Rational Design ◽  
3D Structure ◽  
Three Dimensional ◽  
Structural Diversity ◽  
Reaction Conditions ◽  
X Ray Crystallography ◽  
Close Relationship ◽  
Metal Organic ◽  
Judicious Choice ◽  
2D Structure

Considerable progress has been made in the construction of metal-organic frameworks (MOFs) recently[1]. Due to the close relationship between the structures of MOFs and their properties, tuning structures by rational design through the judicious choice of metal ions, bridging organic ligands and reaction conditions becomes very attractive[2]. Three-dimensional pillar-layer architecture of [Co3L2(bpe)4]·2DMF·2(H2O)] (complex 1, Fig 1a), honeycomb-like channels of [Zn2L(OH)(bpe)]·5.5(H2O)] (complex 2,Fig 1b), and chain-like structure of [Zn2(HL)2(bpy)2(H2O)])2]·(bpy)·6(H2O)] (complex 3, Fig 1c) (HL3>=5-(4-carboxybenzoylamino-isophthalic acid), bpe = 1,2-bis(4-pyridyl)ethane and bpy = 4,4'-bipyridine and) have been synthesized and characterized by single X-ray crystallography(Figure 1). Complex 1 features a three-dimensional (3D) pillar-layer architecture generated from bpe-pillared M-L3-layers. Complex 2 is a 3D structure with 4- and 6-coordinated Zn2+in the centrosymmetric tetranuclear Zn4(µ3OH)2(COO)6(bpe)4SBU. Complex 3 is 2D structure. The [Zn(HL)(bpy)(H2O)] chains are connected each other by hydrogen bonding, with free bpy and guest water molecules accommodated in.

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