1
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Farh MK, Gruschwitz FV, Ziegenbalg N, Abul-Futouh H, Görls H, Weigand W, Brendel JC. Dual Function of β-hydroxy Dithiocinnamic Esters: RAFT Agent and Ligand for Metal Complexation. Macromol Rapid Commun 2022; 43:e2200428. [PMID: 35751415 DOI: 10.1002/marc.202200428] [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: 05/05/2022] [Revised: 06/12/2022] [Indexed: 11/06/2022]
Abstract
The reversible addition-fragmentation chain-transfer (RAFT) process has become a versatile tool for the preparation of defined polymers tolerating a large variety of functional groups. Several dithioesters, trithiocarbonates, xanthates, or dithiocarbamates have been developed as effective chain transfer agents (CTA), but only few examples have been reported, where the resulting end groups are directly considered for a secondary use besides controlling the polymerization. We here demonstrate that β-hydroxy dithiocinnamic esters represent a hitherto overlooked class of materials, which were originally designed for the complexation of transition metals but might as well act as reversible CTA. Modified with a suitable leaving group (R-group), these vinyl conjugated dithioesters indeed provide reasonable control over the polymerization of acrylates, acrylamides, or styrene via the RAFT process. Kinetic studies revealed linear evolutions of molar mass with conversion, while different substituents on the aromatic unit had only a minor influence. Block extensions prove the livingness of the polymer chains, although extended polymerization times may lead to side reactions. The resulting dithiocinnamic ester end groups are still able to form complexes with platinum, which verifies that the structural integrity of the end group is maintained. These findings open a versatile new route to tailor-made polymer bound metal complexes. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Micheal K Farh
- Department of Inorganic and Analytical Chemistry (IAAC), Friedrich Schiller University Jena, Humboldtstraße 8, 07743, Jena, Germany.,Department of Chemistry, Faculty of Science, Assiut University, Assiut, 71515, Egypt.,Department of Chemistry, Faculty of Science, The Hashemite University, P.O. Box 330127, Zarqa, 13133, Jordan
| | - Franka V Gruschwitz
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743, Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Nicole Ziegenbalg
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743, Jena, Germany
| | - Hassan Abul-Futouh
- Department of Chemistry, Faculty of Science, The Hashemite University, P.O. Box 330127, Zarqa, 13133, Jordan
| | - Helmar Görls
- Department of Inorganic and Analytical Chemistry (IAAC), Friedrich Schiller University Jena, Humboldtstraße 8, 07743, Jena, Germany
| | - Wolfgang Weigand
- Department of Inorganic and Analytical Chemistry (IAAC), Friedrich Schiller University Jena, Humboldtstraße 8, 07743, Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Johannes C Brendel
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743, Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
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2
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Firdoos T, Kumar P, Radha A, Gomila RM, Frontera A, Sood P, Pandey SK. An insight into triel bonds in O, O′-diarylphosphorodithioates of thallium( i): experimental and theoretical investigations. NEW J CHEM 2022. [DOI: 10.1039/d1nj04852j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Two new thallium(i) compounds have been synthesized and structurally characterized. The existence of triel bonds in these compounds has been confirmed by HSA and DFT calculations using QTAIM and NCI plot index methods.
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Affiliation(s)
- Tahira Firdoos
- Post Graduate Department of Chemistry, University of Jammu, Baba Saheb Ambedkar Road, Jammu Tawi-180006, J&K, India
| | - Pretam Kumar
- Post Graduate Department of Chemistry, University of Jammu, Baba Saheb Ambedkar Road, Jammu Tawi-180006, J&K, India
| | - Anu Radha
- Post Graduate Department of Chemistry, University of Jammu, Baba Saheb Ambedkar Road, Jammu Tawi-180006, J&K, India
| | - Rosa M. Gomila
- Departament de Química, Universitat de les Illes Balears, Crta de Valldemossa km 7.5, 07122 Palma de Mallorca (Baleares), Spain
| | - Antonio Frontera
- Departament de Química, Universitat de les Illes Balears, Crta de Valldemossa km 7.5, 07122 Palma de Mallorca (Baleares), Spain
| | - Puneet Sood
- Advanced Materials Research Center, Indian Institute of Technology, Block-A2 Building, Kamand Campus, Mandi, Himachal Pradesh-175005, India
| | - Sushil K. Pandey
- Post Graduate Department of Chemistry, University of Jammu, Baba Saheb Ambedkar Road, Jammu Tawi-180006, J&K, India
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3
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Anamika, Yadav CL, Drew MGB, Kumar K, Singh N. Ferrocene-Functionalized Dithiocarbamate Zinc(II) Complexes as Efficient Bifunctional Catalysts for the One-Pot Synthesis of Chromene and Imidazopyrimidine Derivatives via Knoevenagel Condensation Reaction. Inorg Chem 2021; 60:6446-6462. [PMID: 33881858 DOI: 10.1021/acs.inorgchem.1c00162] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Four new mononuclear/coordination polymeric (CP) zinc(II) complexes (1-4) of ferrocenyl/pyridyl-functionalized dithiocarbamate ligands, N-ferrocenylmethyl-N-butyl dithiocarbamate (L1), N-ferrocenylmethyl-N-ethylmorpholine dithiocarbamate (L2), N-ferrocenylmethyl-N-2-(diethylamino)ethylamine dithiocarbamate (L3), and N-4-methoxybenzyl-N-3-methylpyridyl dithiocarbamate (L4), have been synthesized and characterized by elemental analyses, IR, UV-vis, and 1H and 13C{1H} NMR spectroscopic techniques. The solid-state structures of complexes 1, 3, and 4 have been determined by single-crystal X-ray crystallography as well as powder X-ray diffraction. Single-crystal X-ray crystallography revealed a monomeric structure for complex 1 but 1D polymeric structures for complexes 3 and 4. In all complexes, dithiocarbamate ligands are bonded to the Zn(II) metal ion in a S^S chelating mode, and in the CPs, N atoms on the 2-(diethylamino)ethylamine and 3-pyridyl functionalities in the ligands on the neighboring molecules are also bonded to metal centers, leading to the formation of either a discrete tetrahedral molecule in 1 or 1D CP structures in 3 and 4. The Zn(II) metal centers in the polymeric structures exhibited either square-pyramidal or octahedral geometries. The supramolecular structures in these complexes are sustained via C-H···π (ZnCS2, chelate; 3 and 4), C-H···π, and H···H interactions. The catalytic performances of complexes have also been assessed in the Knoevenagel condensation and one-pot multicomponent reactions. Catalysis results showed that the CP 3 acts as a heterogeneous bifunctional catalyst with excellent transformation efficiency at low catalyst loading.
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Affiliation(s)
- Anamika
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Chote Lal Yadav
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Michael G B Drew
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K
| | - Kamlesh Kumar
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Nanhai Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
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4
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Kumari K, Drew MG, Singh N. Impact of ligand substituents on the crystal structures, optical and conducting properties of phenylmercury(II) β-oxodithioester complexes. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Yadav CL, Anamika, Rajput G, Kumar K, Drew MGB, Singh N. Effect of Substituents on the Crystal Structures, Optical Properties, and Catalytic Activity of Homoleptic Zn(II) and Cd(II) β-oxodithioester Complexes. Inorg Chem 2020; 59:11417-11431. [PMID: 32799477 DOI: 10.1021/acs.inorgchem.0c01195] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Five novel zinc(II) and cadmium(II) β-oxodithioester complexes, [Zn(L1)2] (1), [Zn(L2)2]n (2), [Zn(L3)2]n (3) [Cd(L1)2]n (4), [Cd(L2)2]n (5), with β-oxodithioester ligands, where L1 = 3-(methylthio)-1-(thiophen-2-yl)-3-thioxoprop-1-en-1-olate, L2 = 3-(methylthio)-1-(pyridin-3-yl)-3-thioxoprop-1-en-1-olate, and L3 = 3-(methylthio)-1-(pyridin-4-yl)-3-thioxoprop-1-en-1-olate, were synthesized and characterized by elemental analysis, IR, UV-vis, and NMR spectroscopy (1H and 13C{1H}). The solid-state structures of all complexes were ascertained by single-crystal X-ray crystallography. The β-oxodithioester ligands are bonded to Zn(II)/Cd(II) metal ions in an O∧S and N chelating/chelating-bridging fashion leading to the formation of 1D (in 2-4) and 2D (in 5) coordination polymeric structures, but complex 1 was obtained as a discrete tetrahedral molecule. Complex 4 crystallizes in the C2 chiral space group and has been studied using circular dichroism (CD) spectroscopy. The multidimensional assemblies in these complexes are stabilized by many important noncovalent C-H···π (ZnOSC3, chelate), π···π, C-H···π, and H···H interactions. The catalytic activities of 1-5 in reactions involving C-C and C-O bond formation have been studied, and the results indicated that complex 3 can be efficiently utilized as a heterogeneous bifunctional catalyst for the Knoevenagel condensation and multicomponent reactions to develop biologically important organic molecules. The luminescent properties of complexes were also studied. Interestingly, zinc complexes 1-3 showed strong lumniscent emission in the solid state, whereas cadmium complexes 4 and 5 exhibited bright luminescent emission in the solution phase. The semiconducting behavior of the complexes was studied by solid-state diffuse reflectance spectra (DRS), which showed optical band gaps in the range of 2.49-2.62 eV.
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Affiliation(s)
- Chote Lal Yadav
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Anamika
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Gunjan Rajput
- Department of Chemistry, RCU Government Post Graduate College, Uttarkashi 249193, India
| | - Kamlesh Kumar
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Michael G B Drew
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K
| | - Nanhai Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
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Anamika, Yadav DK, Manar KK, Yadav CL, Kumar K, Ganesan V, Drew MGB, Singh N. New heteroleptic [Ni(ii) 1,1-dithiolate-phosphine] complexes: synthesis, characterization and electrocatalytic oxygen evolution studies. Dalton Trans 2020; 49:3592-3605. [PMID: 32129347 DOI: 10.1039/c9dt04923a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four new heteroleptic Ni(ii) complexes with general formula [Ni(ii)(LL')] (L = 2-(methylene-1,1'-dithiolato)-5-phenylcyclohexane-1,3-dione (L1) and 2-(methylene-1,1'-dithiolato)-5,5'-dimethylcyclohexane-1,3-dione (L2); L' = 1,2-bis(diphenylphosphino)ethane (dppe) and bis(diphenylphosphino)monosulphide methane (dppms) have been synthesized and characterized by elemental analysis and spectroscopy (IR, UV-Vis, 1H, 13C{1H} and 31P{1H} NMR). All complexes 1-4 have also been characterized by PXRD and single crystal X-ray crystallography. The solid state molecular structures revealed distorted square planar geometry about the four-coordinate Ni(ii) metal centre together with rare NiH-C intra/intermolecular anagostic interactions in axial positions. In these complexes supramolecular structures have been sustained by non-covalent C-HO, C-OH-O, C-Hπ, C-Hπ (NiCS2, chelate), ππ and HH interactions. Their electrocatalytic properties have been investigated for oxygen evolution reaction (OER) in which complex 2 showed the highest activity with 10 mA cm-2 at the potential of 1.58 V vs. RHE. In addition, complex 2 also exhibits an OER onset potential at 1.52 V vs. RHE.
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Affiliation(s)
- Anamika
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
| | - Dharmendra Kumar Yadav
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
| | - Krishna K Manar
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
| | - Chote Lal Yadav
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
| | - Kamlesh Kumar
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
| | - Vellaichamy Ganesan
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
| | - Michael G B Drew
- Department of Chemistry, University of Reading, Whiteknights, Reading, RG6 6AD, UK
| | - Nanhai Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
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7
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Tiekink ERT. The remarkable propensity for the formation of C–H⋯π(chelate ring) interactions in the crystals of the first-row transition metal dithiocarbamates and the supramolecular architectures they sustain. CrystEngComm 2020. [DOI: 10.1039/d0ce00289e] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
C–H⋯π(chelate ring) interactions play an important role in assembling first-row transition metal dithiocarbamates in their crystals.
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Affiliation(s)
- Edward R. T. Tiekink
- Research Centre for Crystalline Materials
- School of Science and Technology
- 5 Jalan Universiti
- Sunway University
- Bandar Sunway
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8
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Kumari K, Kumar S, Singh KN, Drew MGB, Singh N. Synthesis and characterization of new square planar heteroleptic cationic complexes [Ni(ii) β-oxodithioester-dppe]+; their use as a catalyst for Chan–Lam coupling. NEW J CHEM 2020. [DOI: 10.1039/d0nj01139h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Six new structurally characterized heteroleptic cationic [Ni(ii) β-oxodithioester-dppe]+PF6− complexes as efficient catalysts for Chan–Lam coupling reaction affording N-arylated products with significant functional group tolerance.
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Affiliation(s)
- Kavita Kumari
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221005
- India
| | - Saurabh Kumar
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221005
- India
| | - Krishna Nand Singh
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221005
- India
| | - Michael G. B. Drew
- Department of Chemistry
- University of Reading Whiteknights
- Reading RG6 6AD
- UK
| | - Nanhai Singh
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221005
- India
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9
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Golovnev NN, Molokeev MS, Lesnikov MK. Three isomers in a (hydrogen l-Cysteinato)-thallium(I): Crystal structure, spectroscopic and thermal properties. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.114141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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10
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Yadav CL, Rajput G, Bisht KK, Drew MGB, Singh N. Spontaneous Resolution upon Crystallization and Preferential Induction of Chirality in a Discrete Tetrahedral Zinc(II) Complex Comprised of Achiral Precursors. Inorg Chem 2019; 58:14449-14456. [DOI: 10.1021/acs.inorgchem.9b01934] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chote Lal Yadav
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Gunjan Rajput
- Department of Chemistry, Ram Chandra Uniyal Government Post Graduate College, Uttarkashi 249193, India
| | - Kamal Kumar Bisht
- Department of Chemistry, Ram Chandra Uniyal Government Post Graduate College, Uttarkashi 249193, India
| | - Michael G. B. Drew
- Department of Chemistry, University of Reading, Whiteknights
Campus, Reading RG6 6AD, U.K
| | - Nanhai Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
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11
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Singh AK, Yadav CL, Mishra KB, Singh SK, Gupta AN, Tiwari VK, Drew MG, Singh N. Highly efficient and recyclable pre-catalysts based on mono- and dinuclear heteroleptic Cu(I) dithio- PPh3 complexes to produce variety of glycoconjugate triazoles. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2019.03.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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12
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Anamika A, Singh R, Manar KK, Yadav CL, Kumar A, Singh RK, Drew MGB, Singh N. Impact of substituents on the crystal structures and anti-leishmanial activity of new homoleptic Bi(iii) dithiocarbamates. NEW J CHEM 2019. [DOI: 10.1039/c9nj04477a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Anti-leishmanial activity of six structurally characterised new functionalised homoleptic Bi(iii) dithiocarbamate complexes having monomeric, dimeric and rare polymeric structures has been explored.
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Affiliation(s)
- Anamika Anamika
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221005
- India
| | - Rajan Singh
- Department of Biochemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221005
- India
| | - Krishna K. Manar
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221005
- India
| | - Chote Lal Yadav
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221005
- India
| | - Akhilesh Kumar
- Department of Chemistry
- Indian Institute of Technology
- Kanpur 208016
- India
| | - Rakesh K. Singh
- Department of Biochemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221005
- India
| | | | - Nanhai Singh
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221005
- India
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13
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Anamika A, Agrahari AK, Manar KK, Yadav CL, Tiwari VK, Drew MGB, Singh N. Highly efficient structurally characterised novel precatalysts: di- and mononuclear heteroleptic Cu(i) dixanthate/xanthate–phosphine complexes for azide–alkyne cycloadditions. NEW J CHEM 2019. [DOI: 10.1039/c9nj01551e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Prominent catalytic activities of novel di- and mononuclear Cu(i) xanthate/phosphine complexes have been investigated for the synthesis of triazolyl glycoconjugates using Click approach.
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Affiliation(s)
- Anamika Anamika
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221005
- India
| | - Anand K. Agrahari
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221005
- India
| | - Krishna K. Manar
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221005
- India
| | - Chote Lal Yadav
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221005
- India
| | - Vinod K. Tiwari
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221005
- India
| | | | - Nanhai Singh
- Department of Chemistry
- Institute of Science
- Banaras Hindu University
- Varanasi 221005
- India
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