1
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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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2
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Li Q, Ishida M, Wang Y, Li C, Baryshnikov G, Zhu B, Sha F, Wu X, Ågren H, Furuta H, Xie Y. Antiaromatic Sapphyrin Isomer: Transformation into Contracted Porphyrinoids with Variable Aromaticity. Angew Chem Int Ed Engl 2023; 62:e202212174. [PMID: 36342501 DOI: 10.1002/anie.202212174] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Indexed: 11/09/2022]
Abstract
Sapphyrin is a pentapyrrolic expanded porphyrin with a 22π aromatic character. Herein, we report the synthesis of a 20π antiaromatic sapphyrin isomer 1 by oxidative cyclization of a pentapyrrane precursor P5 with a terminal β-linked pyrrole. The resulting isomer 1, containing a mis-linked bipyrrole unit in the skeleton, exhibits a reactivity for further oxidation due to the distinct antiaromatic electronic structure, affording a fused macrocycle 2, possessing a spiro-carbon-containing [5.6.5.6]-tetracyclic structure. Subsequent treatment with an acid afforded a weakly aromatic pyrrolone-appended N-confused corrole 3, and thermal fusion gave a [5.6.5.7]-tetracyclic-ring-embedded 14π aromatic triphyrin(2.1.1) analog 4. The cyclization at the mis-linked pyrrole moiety of P5 played a crucial role in synthesizing the antiaromatic porphyrinoid susceptible to facile transformation to novel porphyrinoids with variable aromaticity.
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Affiliation(s)
- Qizhao Li
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
| | - Masatoshi Ishida
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, Tokyo, 192-0397, Japan
| | - Yunyun Wang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
| | - Chengjie Li
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
| | - Glib Baryshnikov
- Department of Science and Technology, Laboratory of Organic Electronics, Linköping University, 60174, Norrköping, Sweden
| | - Bin Zhu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
| | - Feng Sha
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
| | - Xinyan Wu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
| | - Hans Ågren
- Department of Physics and Astronomy, Uppsala University, 75120, Uppsala, Sweden
| | - Hiroyuki Furuta
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, Fukuoka, 819-0395, Japan
| | - Yongshu Xie
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
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3
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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: 34] [Impact Index Per Article: 17.0] [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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4
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Sahoo S, Jana M, Rath H. Tailor-made aromatic porphyrinoids with NIR absorption. Chem Commun (Camb) 2022; 58:1834-1859. [PMID: 35028653 DOI: 10.1039/d1cc06336g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The highlight of this article is the recent progress in the state-of-the-art synthetic design and isolation of artificial porphyrinoids by swapping pyrrole component(s) with diverse functionalized pyrrolic(heterocyclic)/carbacycle building block(s) to compare the impact on the electronic absorption spectra and aromaticity of the incorporated isomeric/expanded porphyrinoids. Attention has been directed towards five distinct criteria of utilizing functionalized pyrrolic(heterocyclic)/aromatic hydrocarbons as synthons for NIR absorbing aromatic isomeric (N-confusion)/expanded porphyrinoids (with five/six heterocycles): (i) fused or annelated pyrrole (heterocycle), (ii) functionalized bi-pyrrole/bi-thiophene/bi-furan building blocks, (iii) azulene based carbacycle building block, (iv) vinylogous aromatic carbacycle/heterocycle(s) building block and (v) N-confused pyrrole ring(s), and N-confused fused pyrrole ring(s) leading to π-extension. These hybrid porphyrinoids are ideal candidates for basic research into macrocyclic aromaticity and for many potential applications owing to NIR absorption.
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Affiliation(s)
- Sumit Sahoo
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A/2B Raja S. C Mullick Road, Jadavpur, Kolkata, West Bengal 700 032, India.
| | - Manik Jana
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A/2B Raja S. C Mullick Road, Jadavpur, Kolkata, West Bengal 700 032, India.
| | - Harapriya Rath
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A/2B Raja S. C Mullick Road, Jadavpur, Kolkata, West Bengal 700 032, India.
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Rath H, Jana M, Narayanasamy R, Usharani D, Tripathi K. Fluoride ion Coordination-Induced Turn-On Fluorescence of Tailored N-Methyl N-Confused Tripyrromonomethene Analogues. Org Biomol Chem 2022; 20:6741-6749. [DOI: 10.1039/d2ob01180h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Inorder to achieve striking compromise between flexibility and rigidity, two unprecedented highly air-stable N-methyl N-Confused tripyrromonomethene analogues in near quantitative yields have been synthesized by chloranil oxidation under aerobic condition....
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Rath H, Halder N, Narayanasamy R, Usharani D. Chemical transformation of Doubly N-Confused Porphodimethene to variants of (anti)Aromatic Doubly N-Confused Porphyrinoids and σ aromatic Doubly N-Confused Isophlorinoid. Org Chem Front 2022. [DOI: 10.1039/d2qo00160h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chemical conversion of non-aromatic trans-doubly N-confused porphodimethene to hitherto unknown variants of doubly N-confused porphyrinoids/isophlorinoid have been unravelled by precise interplay between the types of oxidants, the types of meso-aryl...
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7
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Zheng XL, Lin HS, Zhang BW, Maruyama S, Matsuo Y. Synthesis of Conjugated Donor-Acceptor Antiaromatic Porphyrins and Their Application to Perovskite Solar Cells. J Org Chem 2021; 87:5457-5463. [PMID: 34931835 DOI: 10.1021/acs.joc.1c01947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A conjugated donor-acceptor antiaromatic porphyrin, composed of an antiaromatic thieno-fused porphyrin structure and a diketopyrrolopyrrole mioety, was synthesized and applied in a perovskite solar cell for the first time. Enhanced light absorption in the device by the antiaromatic porphyrin resulted in a significantly increased power conversion efficiency of 19.3%.
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Affiliation(s)
- Xue-Lin Zheng
- Department of Chemistry, School of Chemistry and Materials Science, and Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Hao-Sheng Lin
- Department of Chemical System Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.,Department of Mechanical Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Bo-Wen Zhang
- Department of Mechanical Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Shigeo Maruyama
- Department of Mechanical Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Yutaka Matsuo
- Department of Chemistry, School of Chemistry and Materials Science, and Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China.,Department of Chemical System Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.,Department of Mechanical Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
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8
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Chakraborty B, Sahoo S, Narayansamy R, Usharani D, Rath H. Structural isolation of NIR absorbing ferrocenyl bridged N-confused fused expanded phlorin, N-confused porphodimethene and the π-extended corrorin isomer: synthesis and characterization. Dalton Trans 2021; 50:14421-14431. [PMID: 34570128 DOI: 10.1039/d1dt02385c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Concise syntheses and spectroscopic, solid state X-ray crystal structure and theoretical studies of three electronically appealing new generation hitherto unknown ferrocenyl bridged N-confused heterocyclic macrocycles with (without) fusion are reported. Intriguingly, the expanded N-confused fused phlorin (1.1.1.1.1) with the built-in tripentacyclic [5.5.5] moiety exhibits tailing of the NIR absorption band beyond 1000 nm while the nonconjugated porphodimethene and a new generation π-extended isomeric corrorin analogue exhibit UV-vis absorption.
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Affiliation(s)
- Buddhadeb Chakraborty
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A/2B Raja S.C Mullick Road, Jadavpur, Kolkata, West Bengal 700 032, India.
| | - Sumit Sahoo
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A/2B Raja S.C Mullick Road, Jadavpur, Kolkata, West Bengal 700 032, India.
| | - Raja Narayansamy
- Department of Food Safety and Analytical Quality Control Laboratory, CSIR-Central Food Technological Research Institute, Mysuru 700020, Karnataka, India.
| | - Dandamudi Usharani
- Department of Food Safety and Analytical Quality Control Laboratory, CSIR-Central Food Technological Research Institute, Mysuru 700020, Karnataka, India. .,Academy of Scientific and Innovative Research (ACSIR), CSIR-HRDG, Ghaziabad, Uttar Pradesh, India
| | - Harapriya Rath
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A/2B Raja S.C Mullick Road, Jadavpur, Kolkata, West Bengal 700 032, India.
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9
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Chaudhri N, Guberman-Pfeffer MJ, Li R, Zeller M, Brückner C. β-Trioxopyrrocorphins: pyrrocorphins of graded aromaticity. Chem Sci 2021; 12:12292-12301. [PMID: 34603659 PMCID: PMC8480330 DOI: 10.1039/d1sc03403k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 08/19/2021] [Indexed: 11/21/2022] Open
Abstract
Octaethyltrioxopyrrocorphins unexpectedly show macrocycle-aromatic properties, even though they contain the macrocyclic π-system of the non-aromatic pyrrocorphins (hexahydroporphyrins). Two of the four possible triketone regioisomers were first reported in 1969 by one-pot oxidation of octaethylporphyrin but remained essentially unexplored since. We detail here the targeted preparation of the remaining two triketone isomers and the optical and NMR spectroscopic properties of all isomers. All four regioisomers possess unique electronic properties, including broadly varying degrees of diatropicity that were experimentally determined using 1H NMR spectroscopy and computationally verified. Structural patterns modulating the aromaticity were recognized. These differences highlight the regioisomerically differentiated influences of the three β-oxo-functionalities. We also present the solid state structure of the two most common isomers (in their free base form or as zinc complexes), allowing further conclusions to be made about the resonance structures present in these triketones. Remarkably, also, the halochromic properties of the triketones differ sharply from those of regular (hydro)porphyrins, providing further support for the proposed 16-membered, 18 π-electron aromatic ring-current. The work conceptually expands the understanding of tris-modified hydroporphyrinoid analogues and the factors that enable and control porphyrinoid aromaticity.
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Affiliation(s)
- Nivedita Chaudhri
- Department of Chemistry, University of Connecticut Storrs CT 06269-3060 USA
| | | | - Ruoshi Li
- Department of Chemistry, University of Connecticut Storrs CT 06269-3060 USA
| | - Matthias Zeller
- Department of Chemistry, Purdue University 560 Oval Drive West Lafayette IN 47907-2084 USA
| | - Christian Brückner
- Department of Chemistry, University of Connecticut Storrs CT 06269-3060 USA
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Xu Q, Zhang R, Zhang H, Jin GQ, Wang BW, Zhu M, Zhang J, Gao S, Zhang JL. Porpholactam-cinnamaldehyde conjugates for promoting ROS generation in photodynamic therapy. J PORPHYR PHTHALOCYA 2021. [DOI: 10.1142/s1088424621501054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Photodynamic therapy (PDT) is a non-invasive method for cancer treatment that relies on the generation of excess reactive oxygen species (ROS), upon excitation of photosensitizer (PS), to eradicate tumor cells. However, the overexpress of endogenous antioxidants in tumor cells will eliminate the ROS and restrict the therapeutic efficacy of PDT. Herein, a novel type of PS was developed by conjugating cinnamaldehyde (CA), a kind of oxidative stress amplified agent, with porpholactam through a hydrazone bond. The new PS retains the photophysical properties of porpholactam, which displays high singlet oxygen quantum yield for the PDT function. The results of in vitro experiments performed including ROS assay and the cytotoxicity in cancer cells suggest that the rational design of the novel porpholactam-CA derivatives result in enhanced ROS generation upon irradiation, providing a possible approach to achieve enhanced therapeutic effects in PDT.
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Affiliation(s)
- Qifan Xu
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ruijing Zhang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Hang Zhang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Guo-Qing Jin
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Bing-Wu Wang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- Chemistry and Chemical Engineering, Guangdong Laboratory, Shantou 515031, China
| | - Mengliang Zhu
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Jing Zhang
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Song Gao
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
- Chemistry and Chemical Engineering, Guangdong Laboratory, Shantou 515031, China
| | - Jun-Long Zhang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- Chemistry and Chemical Engineering, Guangdong Laboratory, Shantou 515031, China
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Halder N, Mahadavaiah MH, Usharani D, Rath H. Ni(II) and Cu(III) organometallic complexes of trans doubly N-confused porphodimethenes: Synthesis, spectroscopic and theoretical characterization. J PORPHYR PHTHALOCYA 2021. [DOI: 10.1142/s1088424621500772] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Synthesis, spectroscopic and theoretical investigations of hitherto unknown highly stable nickel, and copper organometallic complexes of trans-doubly N-confused porphodimethenes are reported. The distorted square planar Ni organometallic complex has been susceptible to trivial +2 oxidation state of Ni via single CH activation and another weak Ni-C bond with C-H agostic interaction while the diamagnetic near square planar copper complex exhibits the atypical +3 oxidation state of copper via double inner CH activation. The conformational preorganization and metallation induced conformational reorganization owing to the formation of M-C bond formations by both nickel and copper have been thoroughly investigated by various spectroscopic techniques and in-depth DFT level theoretical calculations.
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Affiliation(s)
- Nyancy Halder
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A/2B Raja SC, Mullick Road, Jadavpur, Kolkata 700032, India
| | - Maheshwari Horalavadi Mahadavaiah
- Department of Food Safety and Analytical Quality Control Laboratory, CSIR-Central, Food Technological Research Institute, Mysuru, Karnataka, 570020, India
| | - Dandamudi Usharani
- Department of Food Safety and Analytical Quality Control Laboratory, CSIR-Central, Food Technological Research Institute, Mysuru, Karnataka, 570020, India
- Academy of Scientific and InnovativeResearch (AcSIR), CSIR-HRDG, Gazhiabad, Uttarpradesh, India
| | - Harapriya Rath
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A/2B Raja SC, Mullick Road, Jadavpur, Kolkata 700032, India
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12
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Halder N, Sahoo KC, Gourav K, Usharani D, Rath H. Perimeter Coordinated Diastereomeric Rh(I) Complex of Helically Twisted Weakly Aromatic Hybrid Singly N-Confused β-β Fused Ferrocenoporphyrinoids. J Org Chem 2021; 86:8015-8026. [PMID: 34096714 DOI: 10.1021/acs.joc.1c00407] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Expedient synthesis, spectroscopic, solid state structural proof, and theoretical study of helically twisted weakly aromatic hybrid singly N-confused ferrocenoporphyrinoids and the peripheral coordinated Rh(I) complex are reported. The X-ray crystal structure of the macrocycles reveals an ambiguously inverted pyrrole ring reinforcing regioselective β,β-linkage with the spatially adjacent N-confused N-methyl pyrrole ring leading to endocyclic extension of macrocyclic π-conjugation via tricyclic [5.5.5] moiety. The three-dimensional structure with built-in fused tricyclic [5.5.5] moiety has paved way to three-dimensional weak diatropicity with vis-NIR absorptions. The peripheral coordinated Rh(I) complex owing to helical chirality about the macrocyclic ring and planar chirality about the square planar Rh coordination site exists as a mixture of diastereomers (5:3) with well resolved 1H NMR spectra anticipating weak aromaticity. The experimental spectroscopic measurements are in agreement with theoretically determined electronic structure and properties strongly elucidating sustained weak diatropic ring currents in twisted macrocycles both in neutral form and in the metalated complex. Further fragment molecular orbital approach and molecular orbital theory gave insights on the stability of N-confused β-β fused oxo-ferrocenoporphyrinoids and formation of the selective peripheral coordinated Rh(I) complex.
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Affiliation(s)
- Nyancy Halder
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A/2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Krushna Chandra Sahoo
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A/2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Kumar Gourav
- Department of Food Safety and Analytical Quality Control Laboratory, CSIR-Central Food Technological Research Institute, Mysuru 570020, Karnataka, India
| | - Dandamudi Usharani
- Department of Food Safety and Analytical Quality Control Laboratory, CSIR-Central Food Technological Research Institute, Mysuru 570020, Karnataka, India.,Academy of Scientific and Innovative Research (AcSIR), CSIR-HRDC, Ghaziabad 201002, Uttar Pradesh, India
| | - Harapriya Rath
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A/2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
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13
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Sahoo S, Sangeetha M, Bera S, Usharani D, Rath H. Targeted synthesis of meso-aryl substituted aromatic trans-doubly N-confused dithia/diselena [18] porphyrins (1.1.1.1) with NIR absorption: spectroscopic and theoretical characterization. Org Biomol Chem 2020; 18:6058-6062. [PMID: 32716019 DOI: 10.1039/d0ob01243b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
High yield synthesis and spectroscopic isolation of two hitherto unknown highly stable single conformers of meso-aryl substituted dithia/diselena trans-doubly N-confused porphyrins with fully π-conjugated [18] annulene structures are reported. In-depth solution state spectroscopic measurements and DFT level theoretical calculations strongly show the distinct aromaticity with strong NIR absorption of these new macrocycles.
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Affiliation(s)
- Sumit Sahoo
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A/2B Raja S.C Mullick Road, Jadavpur, Kolkata, West Bengal 700 032, India.
| | - Mohandas Sangeetha
- Department of Food Safety and Analytical Quality Control Laboratory, CSIR-Central Food Technological Research Institute, Mysuru 700020, Karnataka, India.
| | - Soumita Bera
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A/2B Raja S.C Mullick Road, Jadavpur, Kolkata, West Bengal 700 032, India.
| | - Dandamudi Usharani
- Department of Food Safety and Analytical Quality Control Laboratory, CSIR-Central Food Technological Research Institute, Mysuru 700020, Karnataka, India. and Academy of Scientific and Innovative Research (ACSIR), CSIR-HRDC, Ghaziabad, Uttar Pradesh, India
| | - Harapriya Rath
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A/2B Raja S.C Mullick Road, Jadavpur, Kolkata, West Bengal 700 032, India.
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