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Kumar R, Prakash V, Sankar M. Synthesis of Vanadyl Complexes of N-Confused Porphyrins and Their Bromoperoxidase-like Catalytic Activity. Inorg Chem 2024; 63:12506-12515. [PMID: 38912934 DOI: 10.1021/acs.inorgchem.4c01222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
Two new vanadyl complexes of N-confused porphyrins (NCPs), [VONCTPP] (V-1) and [VONCP(OMe)8] (V-2), have been synthesized for the first time and investigated as a catalyst for the oxidative bromination reaction of phenol and its derivatives. This article further delineates crystal structures, photophysical, and redox properties of both the vanadyl complexes. Complexes V-1 and V-2 exhibited a significant red shift in their absorption spectra compared with their respective free bases. The single-crystal structure of V-1 revealed that the complex is in the 2H tautomeric form, while EPR studies revealed the +4 oxidation state of vanadium metal having an axial compression with dxy1 configuration. Catalytic potential for bromoperoxidases-like activity has been explored for both complexes V-1 and V-2 for the first time in NCP chemistry with excellent TOF values (4.7-6.3 s-1 for V-1 and 7.3-8.7 s-1 for V-2) using KBr as a source of bromine and H2O2 as a green oxidant in aqueous acidic medium at 298 K. Notably, both catalysts show excellent recyclability over five cycles. The vanadyl-metalated NCPs exhibit excellent stability in the air.
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Affiliation(s)
- Rajesh Kumar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Ved Prakash
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Muniappan Sankar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
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Mariammal M, Sahane N, Tiwari S. Water-soluble anionic N-confused porphyrin for sensitive and selective detection of heavy metal pollutants in aqueous environment. ANAL SCI 2023:10.1007/s44211-023-00341-5. [PMID: 37140885 DOI: 10.1007/s44211-023-00341-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 04/04/2023] [Indexed: 05/05/2023]
Abstract
Efficient detection and quantification of metal ions in real time and in a cost-effective manner is a critical step in combating the increasing danger of heavy metal contamination of our biosphere. The potential of water-soluble anionic derivative of N-confused tetraphenylporphyrin (WS-NCTPP) has been investigated for quantitative detection of heavy metal ions. The results show that the photophysical properties of WS-NCTPP differ significantly in the presence of four metal ions, namely Hg(II), Zn(II), Co(II) and Cu(II). The variation in the spectral behaviour is driven by the formation of 1:1 complexes with all the four cations with varied degree of complexation. The selectivity of the sensing is studied through interference studies, indicating maximum selectivity for Hg(II) cations. Computational studies of the structural features of the metal complexes with WS-NCTPP help in establishing the geometry and binding interactions between the metal ions and the porphyrin nucleus. The results demonstrate the promising potential of the NCTPP probe which should be utilized for detection of heavy metal ions, especially mercury, in the near future.
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Affiliation(s)
- Muthu Mariammal
- Department of Chemistry, Institute of Chemical Technology, Mumbai, Maharashtra, 400019, India
| | - Nisha Sahane
- Department of Chemistry, Institute of Chemical Technology, Mumbai, Maharashtra, 400019, India
| | - Shraeddha Tiwari
- Department of Chemistry, Institute of Chemical Technology, Mumbai, Maharashtra, 400019, India.
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Białek MJ, Hurej K, Furuta H, Latos-Grażyński L. Organometallic chemistry confined within a porphyrin-like framework. Chem Soc Rev 2023; 52:2082-2144. [PMID: 36852929 DOI: 10.1039/d2cs00784c] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
The world of modified porphyrins changed forever when an N-confused porphyrin (NCP), a porphyrin isomer, was first published in 1994. The replacement of one inner nitrogen with a carbon atom revolutionised the chemistry that one is able to perform within the coordination cavity. One could explore new pathways in the organometallic chemistry of porphyrins by forcing a carbon fragment from the ring or an inner substituent to sit close to an inserted metal ion. Since the NCP discovery, a series of modifications became available to tune the coordination properties of the cavity, introducing a fascinating realm of carbaporphyrins. The review surveys all possible carbatetraphyrins(1.1.1.1) and their spectacular coordination and organometallic chemistry.
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Affiliation(s)
- Michał J Białek
- Department of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50383 Wrocław, Poland.
| | - Karolina Hurej
- Department of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50383 Wrocław, Poland.
| | - Hiroyuki Furuta
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan.
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Toganoh M, Furuta H. Creation from Confusion and Fusion in the Porphyrin World─The Last Three Decades of N-Confused Porphyrinoid Chemistry. Chem Rev 2022; 122:8313-8437. [PMID: 35230807 DOI: 10.1021/acs.chemrev.1c00065] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Confusion is a novel concept of isomerism in porphyrin chemistry, delivering a steady stream of new chemistry since the discovery of N-confused porphyrin, a porphyrin mutant, in 1994. These days, the number of confused porphyrinoids is increasing, and confusion and associated fusion are found in various fields such as supramolecular chemistry, materials chemistry, biological chemistry, and catalysts. In this review, the birth and growth of confused porphyrinoids in the last three decades are described.
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Affiliation(s)
- Motoki Toganoh
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Hiroyuki Furuta
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
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Kalaiselvan A, Vamsi Krishna IS, Nambiar AP, Edwin A, Reddy VS, Gokulnath S. Carbazole-Based Porphyrins: Synthesis, Structure–Photophysical Property Correlations, and Mercury Ion Sensing. Org Lett 2020; 22:4494-4499. [DOI: 10.1021/acs.orglett.0c01500] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Arumugam Kalaiselvan
- Indian Institute of Science Education and Research Thiruvananthapuram, Kerala 695551, India
| | | | - Anjana Prasad Nambiar
- Indian Institute of Science Education and Research Thiruvananthapuram, Kerala 695551, India
| | - Aathira Edwin
- Indian Institute of Science Education and Research Thiruvananthapuram, Kerala 695551, India
| | | | - Sabapathi Gokulnath
- Indian Institute of Science Education and Research Thiruvananthapuram, Kerala 695551, India
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Speight IR, Huskić I, Arhangelskis M, Titi HM, Stein RS, Hanusa TP, Friščić T. Disappearing Polymorphs in Metal-Organic Framework Chemistry: Unexpected Stabilization of a Layered Polymorph over an Interpenetrated Three-Dimensional Structure in Mercury Imidazolate. Chemistry 2020; 26:1811-1818. [PMID: 31756261 DOI: 10.1002/chem.201905280] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Indexed: 01/06/2023]
Abstract
The "disappearing polymorph" phenomenon is well established in organic solids, and has had a profound effect in pharmaceutical materials science. The first example of this effect in metal-containing systems in general, and in coordination-network solids in particular, is here reported. Specifically, attempts to mechanochemically synthesize a known interpenetrated diamondoid (dia) mercury(II) imidazolate metal-organic framework (MOF) yielded a novel, more stable polymorph based on square-grid (sql) layers. Simultaneously, the dia-form was found to be highly elusive, observed only as a short-lived intermediate in monitoring solvent-free synthesis and not at all from solution. The destabilization of a dense dia-framework relative to a lower dimensionality one is in contrast to the behavior of other imidazolate MOFs, with periodic density functional theory (DFT) calculations showing that it arises from weak interactions, including structure-stabilizing agostic C-H⋅⋅⋅Hg contacts. While providing a new link between MOFs and crystal engineering of organic solids, these findings highlight a possible role for agostic interactions in directing topology and stability of MOF polymorphs.
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Affiliation(s)
- Isaiah R Speight
- Department of Chemistry, Vanderbilt University, Nashville, TN, 37235, USA
| | - Igor Huskić
- Department of Chemistry, McGill University, Montreal, H3A 0B8, Canada
| | - Mihails Arhangelskis
- Department of Chemistry, McGill University, Montreal, H3A 0B8, Canada.,Faculty of Chemistry, University of Warsaw, Warsaw, 02-093, Poland
| | - Hatem M Titi
- Department of Chemistry, McGill University, Montreal, H3A 0B8, Canada
| | - Robin S Stein
- Department of Chemistry, McGill University, Montreal, H3A 0B8, Canada
| | - Timothy P Hanusa
- Department of Chemistry, Vanderbilt University, Nashville, TN, 37235, USA
| | - Tomislav Friščić
- Department of Chemistry, McGill University, Montreal, H3A 0B8, Canada
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