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Ahmed M, Malhotra SS, Yadav O, Monika, Saini C, Sharma N, Gupta MK, Mohapatra RK, Ansari A. DFT and TDDFT exploration on electronic transitions and bonding aspect of DPA and PTDC ligated transition metal complexes. J Mol Model 2024; 30:122. [PMID: 38570356 DOI: 10.1007/s00894-024-05912-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Accepted: 03/22/2024] [Indexed: 04/05/2024]
Abstract
CONTEXT In this study, we have investigated the structure, reactivity, bonding, and electronic transitions of DPA and PDTC along with their Ni-Zn complexes using DFT/TD-DFT methods. The energy gap between the frontier orbitals was computed to understand the reactivity pattern of the ligands and metal complexes. From the energies of FMO's, the global reactivity descriptors such as electron affinity, ionization potential, hardness (η), softness (S), chemical potential (μ), electronegativity (χ), and electrophilicity index (ω) have been calculated. The complexes show a strong NLO properties due to easily polarization as indicated by the narrow HOMO-LUMO gap. The polarizability and hyperpolarizabilities of the complexes indicate that they are good candidates for NLO materials. Molecular electrostatic potential (MEP) maps identified electrophilic and nucleophilic sites on the surfaces of the complexes. TDDFT and NBO analyses provided insights into electronic transitions, bonding, and stabilizing interactions within the studied complexes. DPA and PDTC exhibited larger HOMO-LUMO gaps and more negative electrostatic potentials compared to their metal complexes suggesting the higher reactivity. Ligands (DPA and PDTC) had absorption spectra in the range of 250 nm to 285 nm while their complexes spanned 250 nm to 870 nm. These bands offer valuable information on electronic transitions, charge transfer and optical behavior. This work enhances our understanding of the electronic structure and optical properties of these complexes. METHODS Gaussian16 program was used for the optimization of all the compounds. B3LYP functional in combination with basis sets, such as LanL2DZ for Zn, Ni and Cu while 6-311G** for other atoms like C, H, O, N, and S was used. Natural bond orbital (NBO) analysis is carried out to find out how the filled orbital of one sub-system interacts with the empty orbital of another sub-system. The ORCA software is used for computing spectral features along with the zeroth order regular approximation method (ZORA) to observe its relativistic effects. TD-DFT study is carried out to calculate the excitation energy by using B3LYP functional.
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Affiliation(s)
- Mukhtar Ahmed
- Department of Chemistry, Central University of Haryana, Mahendergarh, 123031, India
| | - Sumit Sahil Malhotra
- Department of Chemistry, Central University of Haryana, Mahendergarh, 123031, India
| | - Oval Yadav
- Department of Chemistry, Central University of Haryana, Mahendergarh, 123031, India
| | - Monika
- Department of Chemistry, Central University of Haryana, Mahendergarh, 123031, India
| | - Charu Saini
- Department of Chemistry, Central University of Haryana, Mahendergarh, 123031, India
| | - Neha Sharma
- Life Science, Dyal Singh College, University of Delhi, Delhi, 110003, India
| | - Manoj Kumar Gupta
- Department of Chemistry, Central University of Haryana, Mahendergarh, 123031, India
| | - Ranjan Kumar Mohapatra
- Department of Chemistry, Government College of Engineering, Keonjhar, Odisha, 758002, India
| | - Azaj Ansari
- Department of Chemistry, Central University of Haryana, Mahendergarh, 123031, India.
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Wang Y, Cheng WW, Mou Y, Wen S, Wang D, Xue YS. A twofold interpenetrated two-dimensional zinc(II) coordination polymer for the highly sensitive detection of nitrofurantoin in aqueous medium. Acta Crystallogr C Struct Chem 2024; 80:98-103. [PMID: 38470954 DOI: 10.1107/s2053229624002171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 03/06/2024] [Indexed: 03/14/2024] Open
Abstract
A novel ZnII coordination polymer, namely, poly[{μ2-bis[4-(2-methyl-1H-imidazol-1-yl)phenyl]methanone-κ2N3:N3'}(μ2-5-bromobenzene-1,3-dicarboxylato-κ2O1:O3)zinc(II)], [Zn(C8H3BrO4)(C21H18N4O)]n or [Zn(Br-BDC)(MIPMO)]n, (I), has been synthesized by the solvothermal method using 5-bromoisophthalic acid (Br-H2BDC), bis[4-(2-methyl-1H-imidazol-1-yl)phenyl]methanone (MIPMO) and Zn(NO3)2·6H2O. Structure analysis showed that compound (I) displays twofold parallel interwoven sql nets. Fluorescence experiments confirmed that the compound can sensitively and selectively detect nitrofurantoin (NFT) in aqueous medium. In addition, the possible fluorescence quenching mechanisms of compound (I) toward NFT are investigated.
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Affiliation(s)
- Yan Wang
- College of Pharmacy and Chemistry and Chemical Engineering, Taizhou University, Taizhou 225300, People's Republic of China
| | - Wei Wei Cheng
- School of Chemistry and Bioengineering, Nanjing Normal University Taizhou College, Taizhou 225300, People's Republic of China
| | - Yi Mou
- College of Pharmacy and Chemistry and Chemical Engineering, Taizhou University, Taizhou 225300, People's Republic of China
| | - Shuai Wen
- College of Pharmacy and Chemistry and Chemical Engineering, Taizhou University, Taizhou 225300, People's Republic of China
| | - Dongkai Wang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Yun Shan Xue
- School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng 224051, Jiangsu, People's Republic of China
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Chen WJ, Lee CY, Huang YH, Chen JD. Cd(II) and Co(II) coordination polymers constructed from N,N'-Bis(3-pyridylmethyl)oxalamide and 1,4-Naphthalenedicarboxylic acid. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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