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Structure, Optical and Magnetic Properties of Two Isomeric 2-Bromomethylpyridine Cu(II) Complexes [Cu(C 6H 9NBr) 2(NO 3) 2] with Very Different Binding Motives. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020731. [PMID: 36677789 PMCID: PMC9866386 DOI: 10.3390/molecules28020731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 12/29/2022] [Accepted: 01/05/2023] [Indexed: 01/12/2023]
Abstract
Two isomeric 2-bromomethylpyridine Cu(II) complexes [Cu(C6H9NBr)2(NO3)2] with 2-bromo-5-methylpyridine (L1) and 2-bromo-4-methylpyridine (L2) were synthesized as air-stable blue materials in good yields. The crystal structures were different with [Cu(L1)2(NO3)2] (CuL1) crystallizing in the monoclinic space group P21/c, while the 4-methyl derivative CuL2 was solved and refined in triclinic P1¯. The orientation of the Br substituents in the molecular structure (anti (CuL1) vs. syn (CuL2) conformations) and the geometry around Cu(II) in an overall 4 + 2 distorted coordination was very different with two secondary (axially elongated) Cu-O bonds on each side of the CuN2O2 basal plane in CuL1 or both on one side in CuL2. The two Br substituents in CuL2 come quite close to the Cu(II) centers and to each other (Br⋯Br ~3.7 Å). Regardless of these differences, the thermal behavior (TG/DTA) of both materials is very similar with decomposition starting at around 160 °C and CuO as the final product. In contrast to this, FT-IR and Raman frequencies are markedly different for the two isomers and the UV-vis absorption spectra in solution show marked differences in the π-π* absorptions at 263 (CuL2) or 270 (CuL1) nm and in the ligand-to-metal charge transfer bands at around 320 nm which are pronounced for CuL1 with the higher symmetry at the Cu(II) center, but very weak for CuL2. The T-dependent susceptibility measurements also show very similar results (µeff = 1.98 µB for CuL1 and 2.00 µB for CuL2 and very small Curie-Weiss constants of about -1. The EPR spectra of both complexes show axial symmetry, very similar averaged g values of 2.123 and 2.125, respectively, and no hyper-fine splitting.
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Al-Ejli MO, Eribi A, Alahzm AM, Salih KS. Synthesis, structural elucidation and optical activity of symmetric Schiff base-functionalized ferrocenes: Synergetic experimental and DFT insights. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Tautomerization of diazene<=>hydrazine via single proton tautomerization, spectral, XRD/HSA-interactions, optical and DFT/TD-DFT of new hydrazine ligand. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Kowsalya P, Neelakantan M, Bhuvanesh NS. Tetranuclear Cu(II) complex with [2+4] Cu4O4 cubane based core framework derived from 2-[{2-(1-hydroxy-ethyl)-phenylimino}-methyl]-6-methoxy-phenol: Quantifying conventional and unconventional interactions and QTAIM analysis. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132396] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Kemparajegowda, Swarup HA, Chandrasekhar S, Jayanna B, Kumara K, Lokanath N, Thimmaiah SB, Mantelingu K. Sulfuric acid-mediated synthesis of 2,5-disubstituted 1,3,4-thiadiazole via intramolecular cyclization reaction from dithioesters: An approach to crystal structure prediction, DFT studies and Hirshfeld surface analysis. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131970] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Shirvan A, Golchoubian H, Siegler MA, Bouwman E. Copper (II) halide complexes with NNO tridentate ligand as chromotropic probes; synthesis, structural characterization and spectroscopic properties. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130930] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Spectroscopic Insight into Tetrahedrally Distorted Square Planar Copper(II) Complex: XRD/HSA, Physicochemical, DFT, and Thermal Investigations. CRYSTALS 2021. [DOI: 10.3390/cryst11101179] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The reaction of bidentate N-S-thione-Schiff base, (E)-benzyl 2-(1-(4-chlorophenyl)-ethylidene)hydrazinecarbodithioate, with Cu(NO3)2·3H2O produced a cis-Cu(II) complex. The molecular structure was confirmed and characterized by CHN-EA, FAB-MS, IR, and UV-Vis analyses. The XRD supported cis-isomer of the bis anionic bidentate N (azomethine) and S (thiol) ligand coordination mode in tetrahedrally distorted square planar, rarely reported in the literature. The results of the XRD-bond lengths were in perfect agreement with the density functional theory (DFT) calculation. DFT-calculated angles around the Cu(II) center displayed slightly less distortion around the metal center from those of XRD. Additionally, the thermal stability of the complex was evaluated via thermal gravimetric analysis (TGA). Two-dimensional fingerprint (2D-FP), Hirshfeld surface analysis (HSA), and molecular electrostatic potential (MEP) support the XRD-packing results with the existence of the H⸱⸱⸱Cl and CH⸱⸱⸱π bonds as the main interactions in the crystal lattice of the desired complex.
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Enudi OC, Louis H, Edim MM, Agwupuye JA, Ekpen FO, Bisong EA, Utsu PM. Understanding the aqueous chemistry of quinoline and the diazanaphthalenes: insight from DFT study. Heliyon 2021; 7:e07531. [PMID: 34296019 PMCID: PMC8282981 DOI: 10.1016/j.heliyon.2021.e07531] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 05/18/2021] [Accepted: 07/06/2021] [Indexed: 11/16/2022] Open
Abstract
The inter-fragment interactions at various binding sites and the overall cluster stability of quinolone (QNOL), cinnoline (CNOL), quinazoline (QNAZ), and quinoxaline (QNOX) complexes with H2O were studied using the density functional theory (DFT) approach. The adsorption and H-bond binding energies, and the energy decomposition mechanism was considered to determine the relative stabilization status of the studied clusters. Scanning tunneling microscopy (STM), natural bonding orbitals (NBO) and charge decomposition were studied to expose the electronic distribution and interaction between fragments. The feasibility of formations of the various complexes were also studied by considering their thermodynamic properties. Results from adsorption studies confirmed the actual adsorption of H2O molecules on the various binding sites studied, with QNOX clusters exhibiting the best adsorptions. Charge decomposition analysis (CDA) revealed significant charge transfer from substrate to H2O fragment in most complexes, except in QNOL, CNOL and QNAZ clusters with H2O at binding position 4, where much charges are back-donated to substrate. The O---H inter-fragment bonds was discovered to be stronger than counterpart N---H bonds in the complexes, whilst polarity indices confirmed N---H as more polar covalent than O---H bonds. Thermodynamic considerations revealed that the formation process of all studied complexes are endothermic (+ve ΔH f ) and non-spontaneous (+ve ΔG f ).
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Affiliation(s)
- Obieze C. Enudi
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
| | - Hitler Louis
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
| | - Moses M. Edim
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
| | - John A. Agwupuye
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
| | - Francis O. Ekpen
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
| | - Emmanuel A. Bisong
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
| | - Patrick M. Utsu
- Computational and Bio-Simulation Research Group, University of Calabar, Calabar, Nigeria
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Boshaala A, Salih KS, Bader N, Almughery AA, Zarrouk A, Warad I. XRD/HSA, noncovalent interactions and influence of solvent polarity on spectral properties of dithiocarbazate schiff base and its cis-Cu(II) complex: Experimental and theoretical studies. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115551] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Badran I, Tighadouini S, Radi S, Zarrouk A, Warad I. Experimental and first-principles study of a new hydrazine derivative for DSSC applications. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129799] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Al-Zaqri N, Salih KSM, Awwadi FF, Alsalme A, Alharthi FA, Alsyahi A, Ali AA, Zarrouk A, Aljohani M, Chetouni A, Warad I. Synthesis, physicochemical, thermal, and XRD/HSA interactions of mixed [Cu(Bipy)(Dipn)](X)2 complexes: DNA binding and molecular docking evaluation. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1841898] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Nabil Al-Zaqri
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
- Department of Chemistry, College of Science, Ibb University, Ibb, Yemen
| | - Kifah S. M. Salih
- Department of Chemistry and Earth Sciences, Qatar University, Doha, Qatar
| | - Firas F. Awwadi
- Chemistry Department, Faculty of Science, The University of Jordan, Amman, Jordan
| | - Ali Alsalme
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Fahad A. Alharthi
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Amjad Alsyahi
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Anas Al Ali
- Department of Chemistry, Science College, An-Najah National University, Nablus, Palestine
| | - Abdelkader Zarrouk
- Laboratory of Materials, Nanotechnology and Environment, Faculty of Sciences, Mohammed V University, Agdal-Rabat, Morocco
| | - Meshari Aljohani
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
| | - Ahmed Chetouni
- Laboratoire de Chimie Analytique Appliquée, Matériaux et Environnement (LC2AME), Faculté des Sciences, Université Mohamed I, Oujda, Morocco
| | - Ismail Warad
- Department of Chemistry and Earth Sciences, Qatar University, Doha, Qatar
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Nawaz S, Zierkiewicz W, Michalczyk M, Ghaffar A, Jabeen F, Ahmad S. DFT Analysis of Copper(II) Complexes of cis-1,2-Diaminocyclohexane (Dach), [Cu(Dach)2(N3)]Cl·3H2O and [Cu(Dach)2-Ag(CN)2-Cu(Dach)2][Ag(CN)2]3. J STRUCT CHEM+ 2019. [DOI: 10.1134/s0022476619040061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Warad I, Awwadi FF, Abd Al-Ghani B, Sawafta A, Shivalingegowda N, Lokanath NK, Mubarak MS, Ben Hadda T, Zarrouk A, Al-Rimawi F, Odeh AB, Barghouthi SA. Ultrasound-assisted synthesis of two novel [CuBr(diamine) 2·H 2O]Br complexes: Solvatochromism, crystal structure, physicochemical, Hirshfeld surface thermal, DNA/binding, antitumor and antibacterial activities. ULTRASONICS SONOCHEMISTRY 2018; 48:1-10. [PMID: 30080530 DOI: 10.1016/j.ultsonch.2018.05.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 05/09/2018] [Accepted: 05/11/2018] [Indexed: 06/08/2023]
Abstract
Two new hydrated monocationic Cu(II) complexes with 1,3-propylenediamine and 1,2-ethylenediamine of general formula [CuBr(N-N)2·H2O]Br were prepared. The complexes were identified by means of several spectroscopic tools (Uv-visible, IR and MS), thermally (TG/DTA) and CHN-elemental analysis. The three dimensional structure for complex A and B was provide by X-ray diffraction studies and showed the Cu(II) ion as 4 + 1 + 1 coordinated, four nitrogen atoms of the diamine ligands, one bromide ion and one H2O semi-coordinated to the Cu(II) center, a typical trans effect is clearly observed in the two complexes. The molecular crystal structures are linked via several H-bonds like N_H…Br and N_H…O. Additionally, intra-molecular H-bonds of kind C_H…Br is observed; these interactions lead to crystal structure three dimensional architecture packing. Hirshfeld surfaces (HSA) analysis was served to figure out the inter-contacts and fingerprints atoms percentage. DNA-binding, antitumor and antibacterial effectiveness of the desired complexes were evaluated.
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Affiliation(s)
- Ismail Warad
- Department of Chemistry, Science College, An-Najah National University, P.O. Box 7, Nablus, Palestine.
| | - Firas F Awwadi
- Department of Chemistry, The University of Jordan, Amman 11942, Jordan
| | - Bahaa Abd Al-Ghani
- Department of Chemistry, Science College, An-Najah National University, P.O. Box 7, Nablus, Palestine
| | - Ashraf Sawafta
- Biology and Biotechnology Department, AN-Najah National University, P.O. Box 7, Nablus, Palestine
| | - Naveen Shivalingegowda
- Department of Physics, School of Engineering and Technology, Jain University, Bangalore 562 112, India
| | | | | | - Taibi Ben Hadda
- Laboratoire Chimie Matériaux, FSO, Université Mohammed 1ER, Oujda 60000, Morocco
| | - Abdelkader Zarrouk
- Laboratoire Chimie Matériaux, FSO, Université Mohammed 1ER, Oujda 60000, Morocco
| | - Fuad Al-Rimawi
- Department of Chemistry, Faculty of Science and Technology, Al-Quds University, P.O. Box 20002, Al-Quds, Palestine
| | - Abdallah Bani Odeh
- Department of Medical Laboratory Sciences, Faculty of Health Professions, Al Quds University, Al Quds, Palestine
| | - Sameer A Barghouthi
- Department of Medical Laboratory Sciences, Faculty of Health Professions, Al Quds University, Al Quds, Palestine
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Aouad MR, Messali M, Rezki N, Al-Zaqri N, Warad I. Single proton intramigration in novel 4-phenyl-3-((4-phenyl-1H-1,2,3-triazol-1-yl)methyl)-1H-1,2,4-triazole-5(4H)-thione: XRD-crystal interactions, physicochemical, thermal, Hirshfeld surface, DFT realization of thiol/thione tautomerism. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.05.085] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Hema M, Karthik C, Warad I, Lokanath N, Zarrouk A, Kumara K, Pampa K, Mallu P. Regular square planer bis-(4,4,4-trifluoro-1-(thiophen-2-yl)butane-1,3-dione)/copper(II) complex: Trans/cis-DFT isomerization, crystal structure, thermal, solvatochromism, hirshfeld surface and DNA-binding analysis. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.12.048] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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