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Ding M, Chang J, Mao JX, Zhang J, Chen X. PNCNP Pincer Platinum Chloride Complex as a Catalyst for the Hydrosilylation of Unsaturated Carbon-Heteroatom Bonds. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Man Ding
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Jiarui Chang
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Jia-Xue Mao
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Jie Zhang
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuenian Chen
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, Henan 450001, China
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Carrillo-Hermosilla F, Fernández-Galán R, Ramos A, Elorriaga D. Guanidinates as Alternative Ligands for Organometallic Complexes. Molecules 2022; 27:5962. [PMID: 36144698 PMCID: PMC9501388 DOI: 10.3390/molecules27185962] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 09/06/2022] [Accepted: 09/07/2022] [Indexed: 11/30/2022] Open
Abstract
For decades, ligands such as phosphanes or cyclopentadienyl ring derivatives have dominated Coordination and Organometallic Chemistry. At the same time, alternative compounds have emerged that could compete either for a more practical and accessible synthesis or for greater control of steric and electronic properties. Guanidines, nitrogen-rich compounds, appear as one such potential alternatives as ligands or proligands. In addition to occurring in a plethora of natural compounds, and thus in compounds of pharmacological use, guanidines allow a wide variety of coordination modes to different metal centers along the periodic table, with their monoanionic chelate derivatives being the most common. In this review, we focused on the organometallic chemistry of guanidinato compounds, discussing selected examples of coordination modes, reactivity and uses in catalysis or materials science. We believe that these amazing ligands offer a new promise in Organometallic Chemistry.
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Affiliation(s)
- Fernando Carrillo-Hermosilla
- Departamento de Química Inorgánica, Orgánica y Bioquímica—Centro de Innovación en Química Avanzada (ORFEO−CINQA), Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
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3
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Singh T, Kishan R, Kumar P. Solution behavior of half sandwich ruthenium(II) complexes ligated by sym N,N'-diarylthiourea: Structural aspects and temperature dependent NMR. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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4
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Zain Aldin M, Zaragoza G, Deschamps W, Tomani JCD, Souopgui J, Delaude L. Synthesis, Characterization, and Biological Activity of Water-Soluble, Dual Anionic and Cationic Ruthenium-Arene Complexes Bearing Imidazol(in)ium-2-dithiocarboxylate Ligands. Inorg Chem 2021; 60:16769-16781. [PMID: 34669374 DOI: 10.1021/acs.inorgchem.1c02648] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient synthetic protocol was devised for the preparation of five cationic ruthenium-arene complexes bearing imidazol(in)ium-2-dithiocarboxylate ligands from the [RuCl2(p-cymene)]2 dimer and 2 equiv of an NHC·CS2 zwitterion. The reactions proceeded cleanly and swiftly in dichloromethane at room temperature to afford the expected [RuCl(p-cymene)(S2C·NHC)]Cl products in quantitative yields. When the [RuCl2(p-cymene)]2 dimer was reacted with only 1 equiv of a dithiolate betaine under the same experimental conditions, a set of five bimetallic compounds with the generic formula [RuCl(p-cymene)(S2C·NHC)][RuCl3(p-cymene)] was obtained in quantitative yields. These novel, dual anionic and cationic ruthenium-arene complexes were fully characterized by various analytical techniques. NMR titrations showed that the chelation of the dithiocarboxylate ligands to afford [RuCl(p-cymene)(S2C·NHC)]+ cations was quantitative and irreversible. Conversely, the formation of the [RuCl3(p-cymene)]- anion was limited by an equilibrium, and this species readily dissociated into Cl- anions and the [RuCl2(p-cymene)]2 dimer. The position of the equilibrium was strongly influenced by the nature of the solvent and was rather insensitive to the temperature. Two monometallic and two bimetallic complexes cocrystallized with water, and their molecular structures were solved by X-ray diffraction analysis. Crystallography revealed the existence of strong interactions between the azolium ring protons of the cationic complexes and neighboring donor groups from the anions or the solvent. The various compounds under investigation were highly soluble in water. They were all strongly cytotoxic against K562 cancer cells. Furthermore, with a selectivity index of 32.1, the [RuCl(p-cymene)(S2C·SIDip)]Cl complex remarkably targeted the erythroleukemic cells vs mouse splenocytes.
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Affiliation(s)
- Mohammed Zain Aldin
- Laboratory of Catalysis, MolSys Research Unit, Institut de Chimie Organique (B6a), Université de Liège, Allée du six Août 13, 4000 Liège, Belgium
| | - Guillermo Zaragoza
- Unidade de Difracción de Raios X, RIAIDT, Universidade de Santiago de Compostela, Campus Vida, 15782 Santiago de Compostela, Spain
| | - William Deschamps
- Department of Molecular Biology, Institute for Molecular Biology and Medicine, Université Libre de Bruxelles, 6041 Gosselies, Belgium
| | - Jean-Claude Didelot Tomani
- Department of Molecular Biology, Institute for Molecular Biology and Medicine, Université Libre de Bruxelles, 6041 Gosselies, Belgium
| | - Jacob Souopgui
- Department of Molecular Biology, Institute for Molecular Biology and Medicine, Université Libre de Bruxelles, 6041 Gosselies, Belgium
| | - Lionel Delaude
- Laboratory of Catalysis, MolSys Research Unit, Institut de Chimie Organique (B6a), Université de Liège, Allée du six Août 13, 4000 Liège, Belgium
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5
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Ujjval R, Deepa M, Thomas JM, Sivasankar C, Thirupathi N. Unusual [Pt{κ 2( C, N)}] + → [Pt{κ 2( N, N)}] + Coordination Mode Flip of the Guanidinate(1−) Ligand in Cationic N, N′, N″-Tris(3,5-xylyl)guanidinatoplatinum(II) Bis(phosphine) Complexes. Syntheses, Structural and Theoretical Studies. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00408] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rishabh Ujjval
- Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Masilamani Deepa
- Postgraduate and Research Department of Chemistry, Muthurangam Government Arts College (Autonomous), Vellore 632 002, Tamil Nadu, India
| | - Jisha Mary Thomas
- Catalysis and Energy Laboratory, Department of Chemistry, Pondicherry University (A Central University), R. V. Nagar, Kalapet, Pondicherry 605 014, India
| | - Chinnappan Sivasankar
- Catalysis and Energy Laboratory, Department of Chemistry, Pondicherry University (A Central University), R. V. Nagar, Kalapet, Pondicherry 605 014, India
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6
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Kumar R, Ujjval R, Thirupathi N. Half Sandwich Electron Deficient
N
,
N′
,
N′′
‐Triarylguanidinatoruthenium(II) Complexes: Syntheses, Reactivity Studies, and Structural Aspects. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900616] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Robin Kumar
- Department of Chemistry University of Delhi Delhi 110 007 India
| | - Rishabh Ujjval
- Department of Chemistry University of Delhi Delhi 110 007 India
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7
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Francos J, Cadierno V. The chemistry of guanidinate complexes of the platinum group metals. Dalton Trans 2019; 48:9021-9036. [PMID: 31120072 DOI: 10.1039/c9dt01289c] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In this Perspective article, recent advances in the chemistry of platinum group metal complexes containing mono- and dianionic guanidinate ligands, i.e. [(RN)2C-NR2]- and [(RN)2C[double bond, length as m-dash]NR]2-, respectively, are presented. Synthetic and structural aspects, reactivity studies, and applications of these compounds are discussed.
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Affiliation(s)
- Javier Francos
- Laboratorio de Compuestos Organometálicos y Catálisis (Unidad Asociada al CSIC), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Departamento de Química Orgánica e Inorgánica, IUQOEM, Facultad de Química, Universidad de Oviedo, Julián Clavería 8, E-33006 Oviedo, Spain.
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8
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Saxena P, Thomas JM, Sivasankar C, Thirupathi N. Syntheses and structural aspects of six-membered palladacyclic complexes derived fromN,N′,N′′-triarylguanidines with N- or S-thiocyanate ligands. NEW J CHEM 2019. [DOI: 10.1039/c8nj04167a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Linkage isomers8·2/3PhMe and9·MeOH were synthesized, isolated and structurally characterized by SCXRD and the role of solvent of crystallization in the formation of these linkage isomers identified.
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Affiliation(s)
- Priya Saxena
- Department of Chemistry
- University of Delhi
- Delhi 110 007
- India
| | - Jisha Mary Thomas
- Department of Chemistry
- School of Physical, Chemical and Applied Sciences
- Pondicherry University
- Puducherry 605 014
- India
| | - Chinnappan Sivasankar
- Department of Chemistry
- School of Physical, Chemical and Applied Sciences
- Pondicherry University
- Puducherry 605 014
- India
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Guerriero A, Peruzzini M, Gonsalvi L. Coordination chemistry of 1,3,5-triaza-7-phosphatricyclo[3.3.1.1]decane (PTA) and derivatives. Part III. Variations on a theme: Novel architectures, materials and applications. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.09.024] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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10
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Kumar R, Kishan R, Thomas JM, Chinnappan S, Thirupathi N. Probing the factors that influence the conformation of a guanidinato ligand in [(η5-C5Me5)M(NN)X] (NN = chelating N,N′,N′′-tri(o-substituted aryl)guanidinate(1−); X = chloro, azido and triazolato). NEW J CHEM 2018. [DOI: 10.1039/c7nj03766j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The conformational difference illustrated is ascribed to a subtle repulsive interaction between the o-Cl substituent of two proximal aryl rings in the guanidinate ligand.
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Affiliation(s)
- Robin Kumar
- Department of Chemistry
- University of Delhi
- Delhi 110 007
- India
| | - Ram Kishan
- Department of Chemistry
- University of Delhi
- Delhi 110 007
- India
| | - Jisha Mary Thomas
- Catalysis and Energy Laboratory
- Department of Chemistry
- Pondicherry University (A Central University)
- Puducherry 605014
- India
| | - Sivasankar Chinnappan
- Catalysis and Energy Laboratory
- Department of Chemistry
- Pondicherry University (A Central University)
- Puducherry 605014
- India
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11
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Gámez-Rivera SA, Francos J, Borge J, Cadierno V. Mononuclear Ruthenium and Osmium Complexes with a Bicyclic Guanidinate Ligand: Synthesis and Catalytic Behavior in Olefin Isomerization Processes. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700727] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sebastián A. Gámez-Rivera
- Laboratorio de Compuestos Organometálicos y Catálisis (Unidad Asociada al CSIC); Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica e Inorgánica; Instituto Universitario de Química Organometálica “Enrique Moles”; Universidad de Oviedo; Julián Clavería 8 33006 Oviedo Spain
| | - Javier Francos
- Laboratorio de Compuestos Organometálicos y Catálisis (Unidad Asociada al CSIC); Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica e Inorgánica; Instituto Universitario de Química Organometálica “Enrique Moles”; Universidad de Oviedo; Julián Clavería 8 33006 Oviedo Spain
| | - Javier Borge
- Departamento de Química Física y Analítica; Centro de Innovación en Química Avanzada (ORFEO-CINQA); Universidad de Oviedo; Julián Clavería 8 33006 Oviedo Spain
| | - Victorio Cadierno
- Laboratorio de Compuestos Organometálicos y Catálisis (Unidad Asociada al CSIC); Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica e Inorgánica; Instituto Universitario de Química Organometálica “Enrique Moles”; Universidad de Oviedo; Julián Clavería 8 33006 Oviedo Spain
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12
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Kumar R, Thirupathi N. Syntheses, characterisation, and catalytic role of (η5-C5Me5)Rh(iii) guanidinato complexes in transfer hydrogenation (TH) and TH–etherification. RSC Adv 2017. [DOI: 10.1039/c7ra04152g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Complex 3 has been synthesised and its catalytic activity in base assisted and base free transfer hydrogenation (TH) of a variety of carbonyl compounds and TH–etherification of substrates such as 2-hydroxy-1-naphthaldehyde have been achieved.
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Affiliation(s)
- Robin Kumar
- Department of Chemistry
- University of Delhi
- Delhi
- India
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13
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Francos J, González-Liste PJ, Menéndez-Rodríguez L, Crochet P, Cadierno V, Borge J, Antiñolo A, Fernández-Galán R, Carrillo-Hermosilla F. Half-Sandwich Guanidinate-Osmium(II) Complexes: Synthesis and Application in the Selective Dehydration of Aldoximes. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201501221] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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