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Middya P, Frontera A, Chattopadhyay S. The crucial role of hydrogen bonding in shaping the structures of zinc-based coordination polymers using tridentate N, N, O donor reduced Schiff base ligands and bridging acetates. RSC Adv 2024; 14:13905-13914. [PMID: 38681845 PMCID: PMC11049752 DOI: 10.1039/d4ra00550c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 04/23/2024] [Indexed: 05/01/2024] Open
Abstract
In this manuscript we report the synthesis and characterization of two new polynuclear zinc(ii) complexes, [Zn2L1(μ-OAc)3]n·H2O (1) and [Zn2L2(μ-OAc)3]n (2) using two tridentate ligands, HL1 {4-chloro-2-(((2-(methylamino)ethyl)amino)methyl)phenol} and HL2 {2,4-dibromo-6-(((3-(methylamino)propyl)amino)methyl)phenol}. The structures were confirmed by single-crystal X-ray diffraction analysis. Both complexes form 1D chains. The energy of H-bonding interaction in the solid state structures of the complexes has been estimated by DFT calculation and the crucial role of hydrogen bonding in shaping their structures has been highlighted.
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Affiliation(s)
- Puspendu Middya
- Department of Chemistry, Jadavpur University Kolkata 700032 India
| | - Antonio Frontera
- Department of Chemistry, Universitat de les Illes Balears Crta de Valldemossa km 7.5 07122 Palma de Mallorca (Baleares) Spain
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2
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Middya P, Roy D, Chattopadhyay S. Synthesis, structures and magnetic properties of end-on pseudo-halide bridged dinuclear copper(II) complexes with N,O-donor salicylaldimine Schiff base blocking ligands: A review. Inorganica Chim Acta 2023. [DOI: 10.1016/j.ica.2023.121377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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3
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Majumder A, Sk S, Das A, Vijaykumar G, Sahoo MK, Behera JN, Bera M. Ancillary-Ligand-Assisted Variation in Nuclearities Leading to the Formation of Di-, Tri-, and Tetranuclear Copper(II) Complexes with Multifaceted Carboxylate Coordination Chemistry. ACS OMEGA 2022; 7:39985-39997. [PMID: 36385820 PMCID: PMC9647862 DOI: 10.1021/acsomega.2c04627] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
The self-assembly of a carboxylate-based dinucleating ligand, N,N'-bis[2-carboxybenzomethyl]-N,N'-bis[2-pyridylmethyl]-1,3-diaminopropan-2-ol (H3cpdp), and copper(II) ions in the presence of various exogenous ancillary ligands results in the formation of the new dinuclear complex [Cu2(cpdp)(μ-Hisophth)]4·2H2isophth·21H2O (1), trinuclear complex [Cu3(Hcpdp)(Cl)4] (2), and tetranuclear complex [Cu4(cpdp)(μ-Hphth)(μ4-phth)(piconol)(Cl)2]·3H2O (3) (H2phth = phthalic acid; H2isophth = isophthalic acid; piconol = 2-pyridinemethanol; Cl- = chloride). In methanol-water, the reaction of H3cpdp with CuCl2·2H2O at room temperature leads to the formation of 2. On the other hand, 1 and 3 have been obtained by carrying out the reaction of H3cpdp with CuCl2·2H2O/m-C6H4(CO2Na)2 and CuCl2·2H2O/o-C6H4(CO2Na)2/piconol, respectively, in methanol-water in the presence of NaOH at ambient temperature. All three complexes have been characterized by elemental analysis, molar electrical conductivity and magnetic moment measurements, FTIR, UV-vis spectroscopy, and PXRD, including single-crystal X-ray structural analyses. The molecular structure of 1 is based on a μ-alkoxide and μ-isophthalate-bridged dimeric [Cu2] core; the structure of 2 represents a trimeric [Cu3] core in which a μ-alcohol-bridged dinuclear [Cu2] unit is exclusively coupled with a [CuCl2] species by two μ:η1:η1-syn-anti carboxylate groups forming a triangular motif; the structure of 3 embodies a tetrameric [Cu4] core, with two copper(II) ions in a distorted-octahedral coordination environment, one copper(II) ion in a distorted-trigonal-bipyramidal coordination environment, and the other copper(II) ion in a square-planar coordination environment. In fact, 2 and 3 represent rare examples of copper(II)-based multinuclear complexes showing outstanding features of rich coordination chemistry: (i) using a symmetrical dinucleating ligand, trinuclear complex 2 is generated with four- and five-coordination environments around copper(II) ions; (ii) the unsymmetrical tetranuclear complex 3 is obtained by using the same ligand with four-, five- and six-coordination environments around copper(II) ions; (iii) tetracopper(II) complex 3 shows four different bridging modes of carboxylate groups simultaneously such as μ:η2, μ:η1:η1, μ3:η2:η1:η1, and μ4:η1:η1:η1:η1, the μ4:η1:η1:η1:η1 mode of phthalate being unprecedented. The formation of these [Cu2], [Cu3], and [Cu4] complexes can be controlled by changing the exogenous ancillary ligands and pH of the reaction solutions, thus allowing an effective tuning of the self-assembly. The magnetic susceptibility measurements suggest that the copper centers in all three complexes are antiferromagnetically coupled. The thermal properties of 1-3 have been investigated by thermogravimetric and differential thermal analytical (TGA and DTA) techniques, indicating that the decomposition of all three complexes proceeds via multistep processes.
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Affiliation(s)
- Avishek Majumder
- Department
of Chemistry, University of Kalyani, Kalyani, Nadia, West Bengal 741235, India
| | - Sujan Sk
- Department
of Chemistry, University of Kalyani, Kalyani, Nadia, West Bengal 741235, India
| | - Arpan Das
- Department
of Chemical Sciences, Indian Institute of
Science Education & Research-Kolkata, Mohanpur, West Bengal 741246, India
| | - Gonela Vijaykumar
- Department
of Chemical Sciences, Indian Institute of
Science Education & Research-Kolkata, Mohanpur, West Bengal 741246, India
| | - Malaya K. Sahoo
- School
of Chemical Sciences, National Institute
of Science Education & Research, An OCC of Homi Bhabha National
Institute, Bhubaneswar, Khurda, Odisha 752050, India
| | - J. N. Behera
- School
of Chemical Sciences, National Institute
of Science Education & Research, An OCC of Homi Bhabha National
Institute, Bhubaneswar, Khurda, Odisha 752050, India
| | - Manindranath Bera
- Department
of Chemistry, University of Kalyani, Kalyani, Nadia, West Bengal 741235, India
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4
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Middya P, Ghosh S, Chattopadhyay S. Synthesis and characterization of cobalt and iron complexes with di-azine ligands based on salicylaldehyde or its derivatives: A review. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.116036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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5
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Bhunia S, Gomila RM, Frontera A, Chattopadhyay S. Exploration of noncovalent interactions in the solid state structures of carboxylate bridged trinuclear mixed valence cobalt complexes using computational tools based on the topological analysis of the electron density. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115910] [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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Gao YL, Wang Y, Gao L, Li J, Wang Y, Inoue K. Three-Dimensional Supramolecular Architectures with Mn II Ions Assembled from Hydrogen Bonding Interactions: Crystal Structures and Antiferromagnetic Properties. ACS OMEGA 2022; 7:10022-10028. [PMID: 35382344 PMCID: PMC8973123 DOI: 10.1021/acsomega.1c05285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 03/04/2022] [Indexed: 06/14/2023]
Abstract
Two novel cocrystal MnII compounds were successfully synthesized. The composition of two kinds crystals correspond to [Mn(hfac)2La 2·Mn(hfac)2La(H2O)·Mn(hfac)2(H2O)2] (1) and [Mn(hfac)2Lb 2·Mn(hfac)2(H2O)2·0.5(C6H14)] (2) [La = 1,3-bis(1'-oxyl-3'-oxido-4',4',5',5'-tetramethyl-4,5-dihydro-1H-imidazol-2-y1)benzene; Lb = 1-(1'-oxyl-4',4',5',5'-tetramethylimidazolin-2-yl)-3-(1'-oxyl-3'-oxo-4',4',5',5'-tetramethylimidazolin-2-yl)benzene; hfac = hexafluoroacetylacetonato). Surprisingly, the compounds were not polymeric or clusters but, more interestingly, different ratio biradical-metal coordination compound cocrystals. The extensive intramolecular H-bonds are the cause of formation of the cocrystal structures by assembly in the two manganese(II) derivatives; and another factor is the halogen bonds between CF3 of hfac groups. Furthermore, three-dimensional supramolecular architectures were formed. The magnetic susceptibility of both compounds showed strong antiferromagnetic interactions involving the coordinated radical unit and the metal and lesser contribution from ferromagnetic interactions between the radical units. For compound 1, a good fit was obtained for g Mn = 2.08, g rad = 2.00 (fixed), J 1 = -294.3 cm-1, J 2 = 6.2 cm-1 and J 3 = 10.8 cm-1. A reasonable fit for compound 2 was obtained for g Mn = 2.04, g rad = 2.00 (fixed), J 1' = -273.4 cm-1 and J 2' = 8.6 cm-1.
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Affiliation(s)
- Yan-Li Gao
- School
of Chemistry and Chemical Engineering, Yulin
University, Yulin 719000, China
| | - Yufei Wang
- School
of Chemistry and Chemical Engineering, Yulin
University, Yulin 719000, China
| | - Liguo Gao
- School
of Chemistry and Chemical Engineering, Yulin
University, Yulin 719000, China
| | - Jian Li
- School
of Chemistry and Chemical Engineering, Yulin
University, Yulin 719000, China
| | - Yali Wang
- School
of Chemistry and Chemical Engineering, Yulin
University, Yulin 719000, China
| | - Katsuya Inoue
- Department
of Chemistry, Hiroshima University, 1-3-1, Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
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Yimthachote S, Chumsaeng P, Phomphrai K. Complexity of imine and amine Schiff-base tin(II) complexes: drastic differences of amino and pyridyl side arms. Dalton Trans 2021; 51:509-517. [PMID: 34847211 DOI: 10.1039/d1dt02997e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A series of homoleptic and heteroleptic imine and amine Schiff-base tin(II) complexes containing dimethylamino and pyridyl side arms were synthesized and structurally characterized. While the tin complexes containing the dimethylamino side arm could be prepared in good yield, unusual cyclodimerization and ligand dimerization were observed for the first time for Schiff-base tin complexes having a pyridyl side arm due to the added stabilization offered by the pyridyl ring. The amine Schiff-base tin(II) complexes were active for the ring-opening copolymerization of succinic anhydride (SA) and cyclohexene oxide (CHO) at 110 °C giving highly alternating poly(SA-alt-CHO).
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Affiliation(s)
- Supajittra Yimthachote
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Wangchan, Rayong 21210, Thailand.
| | - Phongnarin Chumsaeng
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Wangchan, Rayong 21210, Thailand.
| | - Khamphee Phomphrai
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Wangchan, Rayong 21210, Thailand.
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8
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Coordination of reduced Schiff base anion to Pd(II): Synthesis, characterization, DFT calculation and catecholase activity. J INDIAN CHEM SOC 2021. [DOI: 10.1016/j.jics.2021.100186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Mondal M, Jana S, Drew MG, Ghosh A. Application of two Cu(II)-azido based 1D coordination polymers in optoelectronic device: Structural characterization and experimental studies. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122815] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Karmakar M, Chattopadhyay S. Synthesis, structure and nitroaromatic sensing ability of a trinuclear zinc complex with a reduced Schiff base ligand: Assessment of the ability of the ligand to sense zinc ion. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114639] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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Mondal M, Ghosh S, Maity S, Giri S, Ghosh A. In situ transformation of a tridentate to a tetradentate unsymmetric Schiff base ligand via deaminative coupling in Ni(ii) complexes: crystal structures, magnetic properties and catecholase activity study. Inorg Chem Front 2020. [DOI: 10.1039/c9qi00975b] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
An N2O donor reduced Schiff base in presence of Ni(ClO4)2·6H2O and SCN− transforms into N2O2 donor ligand via deaminative coupling. Metal complexes 1 and 3 exhibit catecholase like activity and antiferromagnetic coupling between the Ni(ii) ions.
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Affiliation(s)
- Monotosh Mondal
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata-700 009
- India
| | - Soumavo Ghosh
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata-700 009
- India
| | - Souvik Maity
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata-700 009
- India
| | - Sanjib Giri
- Department of Chemistry
- Sri Ramkrishna Sarada Vidya Mahapitha
- Kamarpukur
- India
| | - Ashutosh Ghosh
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata-700 009
- India
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12
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Usefi S, Akhbari K, White J. Sonochemical synthesis, structural characterizations and antibacterial activities of biocompatible Copper(II) coordination polymer nanostructures. J SOLID STATE CHEM 2019. [DOI: 10.1016/j.jssc.2019.04.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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13
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Zhang ZZ, Lee GH, Yang CI. The use of a semi-flexible bipyrimidyl ligand for the construction of azide-based coordination polymers: structural diversities and magnetic properties. Dalton Trans 2018; 47:16709-16722. [PMID: 30427002 DOI: 10.1039/c8dt03928c] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using a semi-flexible quadritopic N-donor ligand, 5,5'-bipyrimidine (bpym), four new azide-based coordination polymers, {[Co2(bpym)(N3)4]·MeCN}n (1), [Co(bpym)(N3)2]n (2), [Mn(bpym)(N3)2]n (3) and {[Ni3(bpym)3(N3)6]·2H2O}n (4) were synthesized and structurally characterized. With bpym aciting as a planar μ4-bridging ligand, the resulting compound, 1, comprised a net-to-net 3D framework composed of two grid-like 44-subnets, Co(EE-N3)2-based and Co2(bpym)-based sheets, with a (4,6)-connected (42·64)(48·66·8)2 topology. Compound 2 adopted a 3D pillared-layer framework with a pts topology based on six-connected Co(ii) centers and four-connected twisted μ4-bpym ligands, while compound 3 adopted a 3D pillared-layer structure with a bcu topology based on Co(EE-N3)2-based 44-layers and two-connected twisted μ2-bpym pillars. In contrast, compound 4 had a 2D layered structure composed of 1D Ni(ii) chains with alternating double EE-N3 and double EO-N3 bridges in an EE-EE-EO sequence and two-connected bpym linkers. The magnetic properties of 1-4 were investigated. The findings indicate that 1 showed weak ferromagnetism due to spin-canted antiferromagnetism and long-range magnetic ordering with a critical temperature, TC = 12.6 K. In contrast, compound 2 exhibited weak ferromagnetism due to spin-canted antiferromagnetism and antiferromagnetic ordering. In compound 3, antiferromagnetic interactions dominated between the Mn(ii) centers through the EE-N3 bridges. In compound 4, the antiferromagnetic and ferromagnetic interactions were transmitted through double EE-N3 and double EO-N3 bridges, respectively, resulting in an AF-AF-F topological ferrimagnetic Ni(ii) chain. Furthermore, field-induced magnetic phase transitions of metamagnetism for 2 and 4 were also observed below TN = 3.6 K and 8.2 K, respectively.
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Affiliation(s)
- Zu-Zhen Zhang
- Department of Chemistry, Tunghai University, Taichung 407, Taiwan.
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14
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Bhowmik P, Jana S, Mahapatra P, Giri S, Chattopadhyay S, Ghosh A. Role of steric crowding of ligands in the formation of hydroxido bridged di- and trinuclear copper(II) complexes: Structures and magnetic properties. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.01.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Hazari A, Diaz C, Ghosh A. H-bond assisted coordination bond formation in the 1D chains based on azido and phenoxido bridged tetranuclear Cu(II) complexes with reduced Schiff base ligands. Polyhedron 2018. [DOI: 10.1016/j.poly.2017.12.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Biswas A, Drew MG, Gómez-García CJ, Ghosh A. Formation of a dinuclear and a trinuclear Ni(II) complex on slight variation of experimental conditions: Structural analysis and magnetic properties. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.09.050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Jiang L, Liu B, Zhao HW, Tian JL, Liu X, Yan SP. Compartmental ligand approach for constructing 3d–4f heterometallic [CuII5LnIII2] clusters: synthesis and magnetostructural properties. CrystEngComm 2017. [DOI: 10.1039/c6ce02519f] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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18
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Parween A, Naskar S, Mota AJ, Espinosa Ferao A, Chattopadhyay SK, Rivière E, Lewis W, Naskar S. C
i
-Symmetry, [2 × 2] grid, square copper complex with the N4,N5-bis(4-fluorophenyl)-1H-imidazole-4,5-dicarboxamide ligand: structure, catecholase activity, magnetic properties and DFT calculations. NEW J CHEM 2017. [DOI: 10.1039/c7nj01667k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
An antiferromagnetically coupled tetranuclear copper complex of a dinucleating bis amide ligand displays catecholase activity.
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Affiliation(s)
- Arfa Parween
- Department of Chemistry
- Birla Institute of Technology
- Ranchi-835215
- India
| | - Sumita Naskar
- Department of Chemistry
- RTC Institute of Technology
- Ranchi – 835219
- India
- Department of Chemistry
| | - Antonio J. Mota
- Department of Inorganic Chemistry
- Faculty of Sciences
- University of Granada
- 18002 Granada
- Spain
| | - Arturo Espinosa Ferao
- Department of Organic Chemistry
- University of Murcia
- Campus de Espinardo
- 30100 Murcia
- Spain
| | | | - Eric Rivière
- Equipe Chimie Inorganique
- Institut de Chimie Moléculaire et des Matériaux d'Orsay
- Université Paris Sud
- 91400 Orsay
- France
| | - William Lewis
- School of Chemistry
- University of Nottingham
- Nottingham NG7 2RD
- UK
| | - Subhendu Naskar
- Department of Chemistry
- Birla Institute of Technology
- Ranchi-835215
- India
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Dasgupta S, Majumder I, Chakraborty P, Zangrando E, Bauza A, Frontera A, Das D. Ligand-Flexibility Controlled and Solvent-Induced Nuclearity Conversion in CuII-Based Catecholase Models: A Deep Insight Through Combined Experimental and Theoretical Investigations. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600985] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sanchari Dasgupta
- Department of Chemistry; University of Calcutta; 92, A. P. C. Road 700009 Kolkata India
| | - Ishani Majumder
- Department of Chemistry; University of Calcutta; 92, A. P. C. Road 700009 Kolkata India
| | - Prateeti Chakraborty
- Department of Chemistry; Amity University Kolkata; New Town 700156 Kolkata India
| | - Ennio Zangrando
- Department of Chemical and Pharmaceutical Sciences; University of Trieste; Via L. Giorgieri 1 34127 Trieste Italy
| | - Antonio Bauza
- Departament de Química; Universitat de les Illes Balears; Crta. de Valldemossa km 7.5 07122 Palma (Baleares) Spain
| | - Antonio Frontera
- Departament de Química; Universitat de les Illes Balears; Crta. de Valldemossa km 7.5 07122 Palma (Baleares) Spain
| | - Debasis Das
- Department of Chemistry; University of Calcutta; 92, A. P. C. Road 700009 Kolkata India
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20
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The unusual intermediate species in the formation of Ni(II) complexes of unsymmetrical Schiff bases by Elder’s method: Structural, electrochemical and magnetic characterizations. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.06.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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21
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Chakrabarty PP, Giri S, Sen K, Saha S, Jana AD, Granda SG, Haldar S, Bera M. A phenoxo–azido assorted Schiff base copper(II) bridged dimer in trace level fluorescence sensing of a pesticide: a DFT supported phenomenon. J COORD CHEM 2016. [DOI: 10.1080/00958972.2016.1223844] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Partha Pratim Chakrabarty
- Department of Chemistry, University of Calcutta, Kolkata, India
- Department of Chemistry, Acharya Prafulla Chandra College, Kolkata, India
| | - Sanjib Giri
- Department of Chemistry, University of Calcutta, Kolkata, India
| | - Kamalika Sen
- Department of Chemistry, University of Calcutta, Kolkata, India
| | - Sandip Saha
- Department of Chemistry, Acharya Prafulla Chandra College, Kolkata, India
| | | | | | - Shobhraj Haldar
- Department of Chemistry, University of Kalyani, Kalyani, India
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22
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Majumder I, Chakraborty P, Adhikary J, Kara H, Zangrando E, Bauza A, Frontera A, Das D. Auxiliary Part of Ligand Mediated Unique Coordination Chemistry of Copper (II). ChemistrySelect 2016. [DOI: 10.1002/slct.201500030] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ishani Majumder
- Department of Chemistry; University of Calcutta; 92, A. P. C. Road Kolkata - 700009 India
| | | | - Jaydeep Adhikary
- Department of Chemistry; University of Calcutta; 92, A. P. C. Road Kolkata - 700009 India
| | - Hulya Kara
- Department of Physics, Faculty of Science and Art; Balikesir University; 10145 Balikesir Turkey
- Department of Physics, Faculty of Science; Mugla Sıtkı Koçman University; Mugla Turkey
| | - Ennio Zangrando
- Department of Chemical and Pharmaceutical Sciences; University of Trieste; Via L. Giorgieri 1 34127 Trieste Italy
| | - Antonio Bauza
- Departament de Química; Universitat de les Illes Balears; Crta. de Valldemossa km 7.5 07122 Palma (Baleares) Spain
| | - Antonio Frontera
- Departament de Química; Universitat de les Illes Balears; Crta. de Valldemossa km 7.5 07122 Palma (Baleares) Spain
| | - Debasis Das
- Department of Chemistry; University of Calcutta; 92, A. P. C. Road Kolkata - 700009 India
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23
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Hazari A, Das LK, Bauzá A, Frontera A, Ghosh A. Exploring the coordinative adaptation and molecular shapes of trinuclear CuII2MII (M = Zn/Cd) complexes derived from salen type Schiff bases: structural and theoretical studies. Dalton Trans 2016; 45:5730-40. [DOI: 10.1039/c5dt04941e] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Structural analyses and DFT studies of three new hetero-metallic compounds established that a slight modification in the ligand system or changes in the central metal ion can stabilize interesting novel structures with thiocyanate ion.
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Affiliation(s)
- Alokesh Hazari
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata-700 009
- India
| | - Lakshmi Kanta Das
- Department of Chemistry
- Government General Degree College Kharagpur-II
- Madpur
- India
| | - Antonio Bauzá
- Departament de Química
- Universitat de les IllesBalears
- 07122 Palma de Mallorca (Baleares)
- Spain
| | - Antonio Frontera
- Departament de Química
- Universitat de les IllesBalears
- 07122 Palma de Mallorca (Baleares)
- Spain
| | - Ashutosh Ghosh
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata-700 009
- India
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24
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Interconversion of host–guest components in supramolecular assemblies of polycarboxylic acids and reduced Schiff bases. Struct Chem 2015. [DOI: 10.1007/s11224-015-0699-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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25
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Wang L, Zhu Y, Wu Z, Li Z, Zhou H, Wu J, Tian Y. Influence of anions on decomposition of Schiff base ligand determines the structure and magnetic property of dinuclear copper(II) complexes. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.08.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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26
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Ma J, Wang DF, Fan LQ, Zhou K. Structure and magnetic properties of a copper(II) coordination polymer based on azide, pyridine and homophthalic acid. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2015; 71:969-74. [DOI: 10.1107/s2053229615018173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 09/29/2015] [Indexed: 11/10/2022]
Abstract
The azide anion is a short bridging ligand that has been used extensively to construct magnetic coordination polymers, and fundamental magneto-structural correlations have been substantiated by theoretical calculations. The copper(II) coordination polymer poly[bis(μ-azido-κ2N1:N1)(μ4-homophthalato-κ4O:O′:O′′:O′′′)bis(pyridine-κN)dicopper(II)], [Cu2(C9H6O4)(N3)2(C5H5N)2]n, was synthesized from homophthalic acid (2-carboxyphenylacetic acid), pyridine and azide (N3−) by a hydrothermal reaction. Single-crystal structure analysis indicated that it features a one-dimensional chain structure which is comprised of (μ1,1-N3−)(μ-syn–syn-COO−)2- and (μ1,1-N3−)2-bridged tetranuclear CuIIunits. Magnetic measurements revealed that the compound exhibits dominant antiferromagnetic behaviour.
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27
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Triki S, Milin E, Gómez-García CJ, Benmansour S, Marchivie M. Hepta- and tetra-nuclear copper(II) clusters self-assembled by cyano- and azacyano-carbanions. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.05.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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28
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Çıralı DE, Dayan O. Synthesis of Tetranuclear Ruthenium (Ii) Complex of Pyridyloxy-Substituted 2,2′-Dioxybiphenyl-Cyclotriphosphazene Platform and its Catalytic Application in the Transfer Hydrogenation of Ketones. PHOSPHORUS SULFUR 2015. [DOI: 10.1080/10426507.2014.966190] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Diğdem Erdener Çıralı
- Department of Chemistry, Faculty of Science and Arts, Çanakkale Onsekiz Mart University, TR 17100, Çanakkale, Turkey
| | - Osman Dayan
- Department of Chemistry, Faculty of Science and Arts, Çanakkale Onsekiz Mart University, TR 17100, Çanakkale, Turkey
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29
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Bhowmik P, Das LK, Chattopadhyay S, Ghosh A. A dinuclear and a 1D zigzag chain of copper(II) complexes with N 2 O donor Schiff base ligand and psuedohalides (azide and dicyanamide): Studies on catecholase-like activity. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.01.039] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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30
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Xie YB, Gan L, Carolina Sañudo E, Zheng H, Zhao J, Zhao M, Wang B, Li JR. Tetrazolate–azido–copper(ii) coordination polymers: tuned synthesis, structure, and magnetic properties. CrystEngComm 2015. [DOI: 10.1039/c5ce00531k] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two antiferrimagnetic tetrazolate–azido–copper(ii) coordination polymers, [Cu(tz)(N3)]n (1) and [Cu(tz)(N3)(NH3)2]n (2) with distinct topological structures were synthesized under different reaction conditions and structurally characterized.
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Affiliation(s)
- Ya-Bo Xie
- Beijing Key Laboratory for Green Catalysis and Separation
- Department of Chemistry and Chemical Engineering
- College of Environmental and Energy Engineering
- Beijing University of Technology
- Beijing 100124, PR China
| | - Lei Gan
- Beijing Key Laboratory for Green Catalysis and Separation
- Department of Chemistry and Chemical Engineering
- College of Environmental and Energy Engineering
- Beijing University of Technology
- Beijing 100124, PR China
| | - E. Carolina Sañudo
- Departamento de Química Inorgànica
- Universitat de Barcelona
- Barcelona 08028, Spain
| | - Haiyang Zheng
- Beijing Key Laboratory for Green Catalysis and Separation
- Department of Chemistry and Chemical Engineering
- College of Environmental and Energy Engineering
- Beijing University of Technology
- Beijing 100124, PR China
| | - Jiongpeng Zhao
- Beijing Key Laboratory for Green Catalysis and Separation
- Department of Chemistry and Chemical Engineering
- College of Environmental and Energy Engineering
- Beijing University of Technology
- Beijing 100124, PR China
| | - Minjian Zhao
- Beijing Key Laboratory for Green Catalysis and Separation
- Department of Chemistry and Chemical Engineering
- College of Environmental and Energy Engineering
- Beijing University of Technology
- Beijing 100124, PR China
| | - Bin Wang
- Beijing Key Laboratory for Green Catalysis and Separation
- Department of Chemistry and Chemical Engineering
- College of Environmental and Energy Engineering
- Beijing University of Technology
- Beijing 100124, PR China
| | - Jian-Rong Li
- Beijing Key Laboratory for Green Catalysis and Separation
- Department of Chemistry and Chemical Engineering
- College of Environmental and Energy Engineering
- Beijing University of Technology
- Beijing 100124, PR China
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31
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Hazari A, Kanta Das L, Kadam RM, Bauzá A, Frontera A, Ghosh A. Unprecedented structural variations in trinuclear mixed valence Co(ii/iii) complexes: theoretical studies, pnicogen bonding interactions and catecholase-like activities. Dalton Trans 2015; 44:3862-76. [DOI: 10.1039/c4dt03446e] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Cis–trans configurational changes of trinuclear mixed valence Co(ii/iii) complexes of a Schiff base ligand and an unusual structure with its reduced form are reported.
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Affiliation(s)
- Alokesh Hazari
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata-700 009
- India
| | - Lakshmi Kanta Das
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata-700 009
- India
| | - Ramakant M. Kadam
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400085
- India
| | - Antonio Bauzá
- Department of Chemistry
- Universitat de les IllesBalears
- 07122 Palma de Mallorca
- Spain
| | - Antonio Frontera
- Department of Chemistry
- Universitat de les IllesBalears
- 07122 Palma de Mallorca
- Spain
| | - Ashutosh Ghosh
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata-700 009
- India
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32
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Bhowmik P, Biswas S, Chattopadhyay S, Diaz C, Gómez-García CJ, Ghosh A. Synthesis, crystal structure and magnetic properties of two alternating double μ1,1 and μ1,3 azido bridged Cu(ii) and Ni(ii) chains. Dalton Trans 2014; 43:12414-21. [DOI: 10.1039/c4dt00328d] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two new alternating double μ1,1 and μ1,3 azido bridged 1D Cu(ii) and Ni(ii) complexes have been synthesized and their magnetic data were fitted to an alternating ferro/antiferromagnetic chain model.
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Affiliation(s)
- Pallab Bhowmik
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata-700 009, India
- Department of Chemistry
| | - Saptarshi Biswas
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata-700 009, India
| | | | - Carmen Diaz
- Departament de Química Inorgànica
- Universitat de Barcelona
- 08028-Barcelona, Spain
| | - Carlos J. Gómez-García
- Instituto de Ciencia Molecular. Parque Científico. Universidad de Valencia
- 46980 Paterna, Spain
| | - Ashutosh Ghosh
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata-700 009, India
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33
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Goswami S, Sanda S, Konar S. A porous metal organic framework with a bcu-type topology involving in situ ligand formation – synthesis, structure, magnetic property and gas adsorption studies. CrystEngComm 2014. [DOI: 10.1039/c3ce41612g] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Dayan S, Arslan F, Kayacı N, Kalaycioglu NO. Synthesis of imine and reduced imine compounds containing aromatic sulfonamide: use as catalyst for in situ generation of ruthenium catalysts in transfer hydrogenation of acetophenone derivatives. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 120:167-175. [PMID: 24184620 DOI: 10.1016/j.saa.2013.10.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Revised: 09/29/2013] [Accepted: 10/02/2013] [Indexed: 06/02/2023]
Abstract
Three imine and three reduced imine ligands containing aromatic sulfonamide (2-7) were isolated by a simple method and characterized by FT-IR, NMR, and elemental analysis. Meanwhile, the interaction of 2-7 ligands with [(p-cymene)RuCl2]2 was analyzed in situ by UV-vis spectrophotometer. The in situ generated catalytic system derived from N-(2-(benzylideneamino)phenyl)-2,4,6-trimethyl-benzenesulfonamides and N-(2-(benzylamino)phenyl)-2,4,6-trimethyl-benzenesulfonamides with [(p-cymene)RuCl2]2 was used as a catalyst in the transfer hydrogenation (TH) of p-substituted acetophenone derivatives. The catalytic systems displayed high activities, which increased in the order 7<4<5<6<1<2<3. The best activity for the TH of 4-chloroacetophenone was provided with the [(p-cymene)RuCl2]2/ligand (3) catalytic system (turnover frequency values: 720 h(-1) for 10 min on S/C: 500/1).
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Affiliation(s)
- Serkan Dayan
- Department of Chemistry, Faculty of Science, Erciyes University, 38039 Kayseri, Turkey
| | - Fatma Arslan
- Department of Chemistry, Faculty of Science, Erciyes University, 38039 Kayseri, Turkey
| | - Nilgün Kayacı
- Department of Chemistry, Faculty of Science, Erciyes University, 38039 Kayseri, Turkey
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35
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Biswas A, Das LK, Ghosh A. Solvomorphism and catecholase activities of bis(μ-phenoxido)dicopper(II) complexes. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.05.039] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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36
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Synthesis of ruthenium(II) complexes derived from reduced imine ligands: As catalysts for transfer hydrogenation of ketones. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.03.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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37
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Biswas A, Das LK, Drew MGB, Diaz C, Ghosh A. Insertion of a hydroxido bridge into a diphenoxido dinuclear copper(II) complex: drastic change of the magnetic property from strong antiferromagnetic to ferromagnetic and enhancement in the catecholase activity. Inorg Chem 2012; 51:10111-21. [PMID: 22963285 DOI: 10.1021/ic300319s] [Citation(s) in RCA: 114] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A diphenoxido-bridged dinuclear copper(II) complex, [Cu(2)L(2)(ClO(4))(2)] (1), has been synthesized using a tridentate reduced Schiff base ligand, 2-[[2-(diethylamino)ethylamino]methyl]phenol (HL). The addition of triethylamine to the methanolic solution of this complex produced a novel triple bridged (double phenoxido and single hydroxido) dinuclear copper(II) complex, [Cu(2)L(2)(OH)]ClO(4) (2). Both complexes 1 and 2 were characterized by X-ray structural analyses, variable-temperature magnetic susceptibility measurements, and spectroscopic methods. In 1, the two phenoxido bridges are equatorial-equatorial and the species shows strong antiferromagnetic coupling with J = -615.6(6.1) cm(-1). The inclusion of the equatorial-equatorial hydroxido bridge in 2 changes the Cu···Cu distance from 3.018 Å (avg.) to 2.798 Å (avg.), the positions of the phenoxido bridges to axial-equatorial, and the magnetic coupling to ferromagnetic with J = 50.1(1.4) cm(-1). Using 3,5-di-tert-butylcatechol as the substrate, the catecholase activity of the complexes has been studied in a methanol solution; compound 2 shows higher catecholase activity (k(cat) = 233.4 h(-1)) than compound 1 (k(cat) = 93.6 h(-1)). Both complexes generate identical species in solution, and they are interconvertible simply by changing the pH of their solutions. The higher catecholase activity of 2 seems to be due to the presence of the OH group, which increases the pH of its solution.
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Affiliation(s)
- Apurba Biswas
- Department of Chemistry, University College of Science, University of Calcutta, 92 APC Road, Kolkata 700 009, India
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38
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Adly OMI. Characterization, molecular modeling and antimicrobial activity of metal complexes of tridentate Schiff base derived from 5-acetyl-4-hydroxy-2H-1,3-thiazine-2,6(3H)-dione and 2-aminophenol. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 95:483-490. [PMID: 22580142 DOI: 10.1016/j.saa.2012.04.030] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2012] [Revised: 03/18/2012] [Accepted: 04/07/2012] [Indexed: 05/31/2023]
Abstract
Metal complexes of Ni(II), Co(II), Cd(II), VO(IV) and UO(2)(VI) as well as several Cu(II) salts, including Cl(-),NO(3)(-),AcO(-),ClO(4)(-) and SO(4)(-2) with a tridentate O(2)N donor Schiff base ligand (H(2)L), synthesized by condensation of 5-acetyl-4-hydroxy-2H-1,3-thiazine-2,6(3H)-dione with 2-aminophenol, were prepared and characterized on the basis of elemental analyses, spectral, magnetic, molar conductance and thermal gravimetric analysis. Square planar, tetrahedral and octahedral geometries have been assigned to the prepared complexes. Molecular parameters of the ligand and its metal complexes have been calculated and correlated with the experimental data, and the changes of bond lengths are linearly correlated with IR data. The antimicrobial activities of the synthesized compounds were tested in vitro against the sensitive organisms Staphylococcus aureus as Gram positive bacteria, Proteus vulgaris as Gram negative bacteria and Candida albicans as fungus strain, and the results are discussed.
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Affiliation(s)
- Omima M I Adly
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo 11711, Egypt.
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39
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Lu Y, Zhao W, Liu Y, Liu B, Feng X, Tan J, Li X, Yang X. Crystal structures, fluorescent and magnetic properties of five new coordination polymers based on biphenyl-3,4′,5-tricarboxylic acid. J SOLID STATE CHEM 2012. [DOI: 10.1016/j.jssc.2012.04.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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40
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Biswas A, Das LK, Drew MGB, Aromí G, Gamez P, Ghosh A. Synthesis, Crystal Structures, Magnetic Properties and Catecholase Activity of Double Phenoxido-Bridged Penta-Coordinated Dinuclear Nickel(II) Complexes Derived from Reduced Schiff-Base Ligands: Mechanistic Inference of Catecholase Activity. Inorg Chem 2012; 51:7993-8001. [DOI: 10.1021/ic202748m] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Apurba Biswas
- Department
of Chemistry, University
College of Science, University of Calcutta, 92 APC Road, Kolkata 700 009, India
| | - Lakshmi Kanta Das
- Department
of Chemistry, University
College of Science, University of Calcutta, 92 APC Road, Kolkata 700 009, India
| | - Michael G. B. Drew
- School of Chemistry, The University of Reading, P.O BOX 224, Whiteknights,
Reading RG 66AD, United Kingdom
| | - Guillem Aromí
- Departament de Química
Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Patrick Gamez
- Departament de Química
Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Companys, 23, 08010 Barcelona, Spain
| | - Ashutosh Ghosh
- Department
of Chemistry, University
College of Science, University of Calcutta, 92 APC Road, Kolkata 700 009, India
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41
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42
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Jana S, Dalapati S, Alam MA, Guchhait N. Spectroscopic, colorimetric and theoretical investigation of salicylidene hydrazine based reduced Schiff base and its application towards biologically important anions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 92:131-136. [PMID: 22446759 DOI: 10.1016/j.saa.2012.02.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2011] [Revised: 02/06/2012] [Accepted: 02/10/2012] [Indexed: 05/31/2023]
Abstract
A reduced Schiff base anionic receptor 1 [N,N'-bis-(2-hydroxy-5-nitro-benzyl)hydrazine] has been synthesized, characterized and reported as a selective chromogenic receptor for fluoride, acetate and phosphate anions over the other tested anions such as chloride, bromide, iodide and hydrogensulphite. Colorimetric naked-eye detection and UV-vis absorption spectroscopic techniques were used to distinguish the recognition behaviours towards various anions. The receptor-anion complexation mainly occurs via hydrogen bonding interactions which facile to generate the charge transfer band in the UV-vis spectra and cause large bathochromic shift as well as naked-eye colour change. Complexation stoichiometry, binding constant and free energy change due to complex formation were determined from Benesi-Hildebrand plot. The binding constant and the free energy change values are well interactive for spontaneous complexation. The experimental results have been correlated with the theoretical calculations using B3LYP hybrid functional and 6-311++G(d,p) basis set for both the receptor and complex by Density Functional Theory (DFT) method.
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Affiliation(s)
- Sankar Jana
- Department of Chemistry, University of Calcutta, Kolkata, India
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43
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Singh P, Singh AK. Palladium(II) complexes of tridentate chalcogenated Schiff bases and related ligands of (S, N, S/Se/Te) type: Synthesis and structural chemistry. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2012.01.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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44
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Ying SM. Syntheses, crystal structures and characterizations of six coordination polymers from reduced Schiff base ligands. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2012.02.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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45
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Naiya S, Biswas S, Drew MGB, Gómez-García CJ, Ghosh A. A Ferromagnetic Methoxido-Bridged Mn(III) Dimer and a Spin-Canted Metamagnetic μ1,3-Azido-Bridged Chain. Inorg Chem 2012; 51:5332-41. [DOI: 10.1021/ic300274n] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Subrata Naiya
- Department of Chemistry, University College of Science, University
of Calcutta, 92, APC Road, Kolkata 700 009, India
- Susil Kar College, Ghoshpur, Champahati, Baruipur, 24 Parganas(S), West Bengal 743
330, India
| | - Saptarshi Biswas
- Department of Chemistry, University College of Science, University
of Calcutta, 92, APC Road, Kolkata 700 009, India
| | - Michael G. B. Drew
- School of Chemistry, The University of Reading, P.O. Box 224, Whiteknights,
Reading RG 66AD, United Kingdom
| | - Carlos J. Gómez-García
- Instituto de Ciencia Molecular
(ICMol), Parque Científico, Universidad de Valencia, C/Catedrático José Beltrán, 2. 46980 Paterna,
Valencia, Spain
| | - Ashutosh Ghosh
- Department of Chemistry, University College of Science, University
of Calcutta, 92, APC Road, Kolkata 700 009, India
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46
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Vaz MGF, Allão RA, Akpinar H, Schlueter JA, Santos S, Lahti PM, Novak MA. Magnetic Mn and Co complexes with a large polycyclic aromatic substituted nitronylnitroxide. Inorg Chem 2012; 51:3138-45. [PMID: 22356306 DOI: 10.1021/ic202623p] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
2-(1'-Pyrenyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazole-3-oxide-1-oxyl (PyrNN) was reacted with M(hfac)(2) (M = Mn(II) and Co(II), hfac = hexafluoracetylacetonate) to give two isostructural ML(2) stoichiometry M(hfac)(2)(PyrNN)(2) complexes and a ML stoichiometry one-dimensional (1-D) polymer chain complex [Mn(hfac)(2)(PyrNN)]. The ML(2) complexes have similar crystal structures with monoclinic unit cells, in which one NO unit from each PyrNN ligand is bonded to the transition metal on cis vertices of a distorted octahedron. The major magnetic interactions are intracomplex metal-to-radical exchange (J), and intermolecular exchange across a close contact between the uncoordinated NO units (J'). For M = Mn(II) an approximate chain model fit gives g = 2.0, J = (-)125 cm(-1) and J' = (-)49 cm(-1); for M = Co(II), g = 2.4, J = (-)180 cm(-1), and J' = (-)70 cm(-1). Hybrid density functional theory (DFT) computations modeling the intermolecular exchange by using only the radical units across the close contact are in good accord with the estimated values of J'. The chain type complex structure shows solvent incorporation for overall structure [Mn(hfac)(2)(PyrNN)](n)·0.5(CHCl(3))·0.5(C(7)H(16)). Both NO groups of the PyrNN ligand are complexed to form helical chains, with very strong metal to radical antiferromagnetic exchange that gives overall ferrimagnetic behavior.
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Affiliation(s)
- Maria G F Vaz
- Instituto de Química, Universidade Federal Fluminense, Niterói, RJ 24020-150, Brazil.
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47
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Biswas A, Drew MGB, Diaz C, Bauzá A, Frontera A, Ghosh A. Cis–trans isomerism in diphenoxido bridged dicopper complexes: role of crystallized water to stabilize the cis isomer, variation in magnetic properties and conversion of both into a trinuclear species. Dalton Trans 2012; 41:12200-12. [DOI: 10.1039/c2dt31277h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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48
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Biswas A, Drew MG, Ribas J, Diaz C, Ghosh A. Synthesis, crystal structures and magnetic properties of two bis(μ-phenoxido)dicopper(II) complexes derived from reduced Schiff base ligands. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.09.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Allão RA, Jordão AK, Resende JALC, Cunha AC, Ferreira VF, Novak MA, Sangregorio C, Sorace L, Vaz MGF. Determination of the relevant magnetic interactions in low-dimensional molecular materials: the fundamental role of single crystal high frequency EPR. Dalton Trans 2011; 40:10843-50. [PMID: 21860868 DOI: 10.1039/c1dt10780a] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new one-dimensional copper(II) complex with formula [Cu(hfac)(2)(N(3)TEMPO)](n) (hfac = hexafluoroacetylacetonate and N(3)TEMPO = 4-azido-2,2,6,6-tetramethylpiperidine-1-oxyl) has been synthesized and investigated by X-ray crystallography, magnetometry and multifrequency single crystal EPR. The system crystallizes in the P1 space group with two non equivalent copper(II) ions in the unit cell, the two nitroxide radicals being coordinated to Cu(1) in axial positions. The copper(II) ions are bridged by N(3)TEMPO radicals resulting in a zig-zag chain structure. The magnetic susceptibility data were at first satisfactorily modeled assuming an alternating spin chain along the monodimensional covalent skeleton, with a ferromagnetic interaction between Cu(1) and the nitroxide moieties and a weaker antiferromagnetic interaction between these and Cu(2) (J(1) = -13.8 cm(-1), J(2) = +2.4 cm(-1)). However, single crystal EPR studies performed at the X- and W-band clearly demonstrate that the observed magnetic monodimensional character of the complex is actually due to the intermolecular contacts involving N(3)TEMPO ligands. This prompted us to fit the magnetic data using a consistent model, pointing out the fundamental role of single crystal EPR data in defining a correct model to describe the magnetic properties of molecular low dimensional systems.
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Affiliation(s)
- R A Allão
- Instituto de Química, Universidade Federal Fluminense, 24020-141, Niterói, RJ, Brazil
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Biswas A, Drew MG, Song Y, Ghosh A. Effect of anionic co-ligands on structure and magnetic coupling of bis(μ-phenoxo)-bridged dinuclear copper(II) complexes. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.07.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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