1
|
Wu H, Shen Q, Dong J, Zhang G, Sun F, Li R. Anion-regulated cobalt coordination polymer: Construction, electrocatalytic hydrogen evolution and L-cysteine electrochemical sensing. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
2
|
Zhang G, Dong J, Li R, Shen Q, Li K, Kong X, Wu H. A Ni(II) coordination polymer with dual electrochemical functions: synthesis, crystal structure, hydrogen evolution reaction and l-ascorbic acid sensing. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2022. [DOI: 10.1515/znb-2021-0185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Abstract
A two-dimensional Ni(II) coordination polymer (NiCP) of the formula {[NiL(terephthalate)(H2O)2]·2H2O}
n
(L = bis(1-(pyridin-4-ylmethyl)-benzimidazol-2-ylmethyl)ether), has been obtained from a solvothermal reaction, and characterized by single-crystal X-ray diffraction, elemental analysis, and IR and UV/Vis spectra. The coordinated terephthalate anions and the L ligands connect the Ni(II) ions in two directions, resulting in the construction of a corrugated layered structure. The electrochemical properties of a NiCP-CPE composite electrode supported by this coordination polymer were studied. For the electrocatalytic hydrogen evolution reaction, the required overpotential of this electrode (NiCP-CPE) is −521 mV when the current density reaches 10 mA cm−2. Compared with the solid carbon paste electrode (sCPE, −976 mV), the smaller overpotential proves effective electrocatalysis of the coordination polymer of the hydrogen evolution reaction. The doped electrode also exhibits high-efficiency in the electrochemical sensing of l-ascorbic acid in water, showing a detection limit of 0.28 μM in a linear range of 0.4–4000 μM.
Collapse
Affiliation(s)
- Geng Zhang
- School of Chemistry and Chemical Engineering , Lanzhou Jiaotong University , Lanzhou , Gansu , 730070 , P. R. China
| | - Jianping Dong
- School of Chemistry and Chemical Engineering , Lanzhou Jiaotong University , Lanzhou , Gansu , 730070 , P. R. China
| | - Ruixue Li
- School of Chemistry and Chemical Engineering , Lanzhou Jiaotong University , Lanzhou , Gansu , 730070 , P. R. China
| | - Qinqin Shen
- School of Chemistry and Chemical Engineering , Lanzhou Jiaotong University , Lanzhou , Gansu , 730070 , P. R. China
| | - Kaiyi Li
- School of Chemistry and Chemical Engineering , Lanzhou Jiaotong University , Lanzhou , Gansu , 730070 , P. R. China
| | - Xiaoxia Kong
- School of Chemistry and Chemical Engineering , Lanzhou Jiaotong University , Lanzhou , Gansu , 730070 , P. R. China
| | - Huilu Wu
- School of Chemistry and Chemical Engineering , Lanzhou Jiaotong University , Lanzhou , Gansu , 730070 , P. R. China
| |
Collapse
|
3
|
Kolle S, Batra S. Transformations of alkynes to carboxylic acids and their derivatives via C[triple bond, length as m-dash]C bond cleavage. Org Biomol Chem 2018; 14:11048-11060. [PMID: 27805215 DOI: 10.1039/c6ob01912a] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Alkynes are building blocks of high synthetic value and their usefulness as precursors to many chemical and biological systems is widely established. Amongst several transformations of alkynes, cleavage of the C[triple bond, length as m-dash]C bond for obtaining diverse compounds is considered to be important. This review, in particular, comprehensively assimilates the transformations of alkynes to carboxylic acids including esters, amides and nitriles resulting from the cleavage of the C[triple bond, length as m-dash]C bond either under the influence of a metal catalyst or via a metal-free approach.
Collapse
Affiliation(s)
- Shivalinga Kolle
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India.
| | - Sanjay Batra
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India. and Academy of Scientific and Innovative Research, New Delhi 110025, India
| |
Collapse
|
4
|
Selmi W, Abdelhak J, Marchivie M, Chastanet G, Zid M. An investigation by DFT of the electronic structure and magnetic properties of a novel μ-oxo-iron(III) complex with the 1,10-phenathroline ligand. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.12.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
5
|
Yang Y, Lu C, Wang H, Liu X. Amide bond cleavage initiated by coordination with transition metal ions and tuned by an auxiliary ligand. Dalton Trans 2016; 45:10289-96. [DOI: 10.1039/c6dt01411a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To scission effectively an amide bond, it is essential for a metal centre to bind to the amide bond and the metal centre is of sufficient Lewis acidity which can be tuned by auxiliary ligands.
Collapse
Affiliation(s)
- Yongpo Yang
- School of Petrochemical Engineering Changzhou University
- Changzhou
- China
| | - Chunxin Lu
- College of Biological
- Chemical Sciences and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| | - Hailong Wang
- College of Biological
- Chemical Sciences and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| | - Xiaoming Liu
- College of Biological
- Chemical Sciences and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| |
Collapse
|
6
|
Khattar R, Yadav A, Mathur P. Copper(II) complexes as catalyst for the aerobic oxidation of o-phenylenediamine to 2,3-diaminophenazine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 142:375-381. [PMID: 25721653 DOI: 10.1016/j.saa.2015.01.115] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Revised: 01/21/2015] [Accepted: 01/30/2015] [Indexed: 06/04/2023]
Abstract
Two new mononuclear copper(II) complexes [Cu (L) (NO3)2] (1) and [Cu (L) Br2] (2) where (L=bis(1-(pyridin-2-ylmethyl)-benzimidazol-2-ylmethyl)ether) are synthesized and characterized by single-crystal X-ray diffraction analysis, elemental analysis, UV-Visible, IR spectroscopy, EPR and cyclic voltammetry. The complexes exhibit different coordination structures; the E1/2 value of the complex (1) is found to be relatively more cathodic than that of complex (2). X-band EPR spectra at low temperature in DMF supports a tetragonally distorted complex (1) while complex (2) shows three different g values suggesting a rhombic geometry. These complexes were utilized as a catalyst for the aerobic oxidation of o-phenylenediamine to 2,3-diaminophenazine assisted by molecular oxygen. The initial rate of reaction is dependent on the concentration of Cu(II) complex as well as substrate, and was found to be higher for the nitrate bound complex, while presence of acetate anion acts as a mild inhibitor of the reaction, as it is likely to pick up protons generated during the course of reaction. The inhibition suggests that the generated protons are further required in another important catalytic step.
Collapse
Affiliation(s)
- Raghvi Khattar
- Department of Chemistry, University of Delhi, Delhi, India
| | - Anjana Yadav
- Department of Chemistry, University of Delhi, Delhi, India
| | - Pavan Mathur
- Department of Chemistry, University of Delhi, Delhi, India.
| |
Collapse
|
7
|
Diferric oxo-bridged complexes of a polydentate aminopyridyl ligand: synthesis, structure and catalytic reactivity. TRANSIT METAL CHEM 2014. [DOI: 10.1007/s11243-014-9875-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|