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Sobov PA, Kuzmin AV, Khasanov SS, Shestakov AF, Otsuka A, Yamochi H, Kitagawa H, Konarev DV. Paramagnetic {[Fe(CO) 2] 2-μ 2-η 2:η 2-η 2:η 2-(C 60) 2} 2- Dimer Bridged by Iron Atoms and C-C Bonds: Effect of Starting Iron Carbonyls on Structures and Properties of Negatively Charged Iron-Bridged Fullerene Dimers. Inorg Chem 2023; 62:17736-17744. [PMID: 37850881 DOI: 10.1021/acs.inorgchem.3c02432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2023]
Abstract
The reaction between an excess of Fe(CO)5 with {Cryptand(K+)}(C60•-) produced the salt {Cryptand(K+)}2{[Fe(CO)2]2-μ2-η2:η2-η2:η2-(C60)2}2-·4C6H4Cl2 (1) containing negatively charged iron-bridged fullerene dimers. In these dimers, the C60 cages are linked via two Fe(CO)2 fragments, forming short Fe-C(C60) bonds with a length of 2.070(3) Å and via two intercage C-C bonds with a length of 1.566(3) Å. Interfullerene center-to-center distance is short, being 9.02 Å. Thus, the coordination-induced dimerization of fullerenes is observed in 1. The dimer is negatively charged, with additional negative electron density mainly localized on iron atoms and, to a lesser extent, on the C60 cages, as revealed by optical and electron paramagnetic resonance spectra. These dimers have a diamagnetic singlet ground state with a small singlet-triplet gap of 25 K; consequently, they transfer to a paramagnetic state with two S = 1/2 spins per dimer above 50 K. Previously, different dimers with isomeric structures were obtained starting from {Cryptand(K+)}(C60•-) and Fe3(CO)12. However, these dimers exhibit diamagnetic properties, owing to the formation of a Fe-Fe bond. In contrast, in dimer 1, the Fe atoms are positioned too far apart to form such a bond, preserving the spin on Fe. We assume that both dimers are formed through the same [Fe(CO)3](C60•-) intermediate, but the subsequent interaction of this intermediate with Fe3(CO)12 or its dimerization yields different dimers. Therefore, the starting carbonyls can control the structures and properties of the resulting dimers.
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Affiliation(s)
- Pavel A Sobov
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS, Chernogolovka, Moscow Region 142432, Russia
| | - Alexey V Kuzmin
- Institute of Solid State Physics RAS, Chernogolovka, Moscow region 142432, Russia
| | - Salavat S Khasanov
- Institute of Solid State Physics RAS, Chernogolovka, Moscow region 142432, Russia
| | - Alexander F Shestakov
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS, Chernogolovka, Moscow Region 142432, Russia
| | - Akihiro Otsuka
- Division of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Hideki Yamochi
- Division of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Hiroshi Kitagawa
- Division of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Dmitri V Konarev
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS, Chernogolovka, Moscow Region 142432, Russia
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Different types of interactions between fullerene C60 and C70 anions and metal tetraphenylporphyrins in the (PMDAE+)(MIITPP)(Fullerene−)⋅Solvent complexes (M = Co, Mn, Zn) containing coordinating N, N, N, N‘, N‘-pentamethyldiaminoethane cations. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Czichy M, Colombo A, Wagner P, Janasik P, Dragonetti C, Raja R, Officer DL, Wang L. Exohedral Functionalization of Fullerene by Substituents Controlling of Molecular Organization for Spontaneous C 60 Dimerization in Liquid Crystal Solutions and in a Bulk Controlled by a Potential. Polymers (Basel) 2021; 13:polym13162816. [PMID: 34451354 PMCID: PMC8401323 DOI: 10.3390/polym13162816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/13/2021] [Accepted: 08/19/2021] [Indexed: 11/21/2022] Open
Abstract
A study was carried out on the possibility of orderly and spontaneous dimerization at room temperature of C60 cages in fullerene liquid crystal fullerene dyads (R-C60). For this purpose, dyads with a structural elements feature supporting π-stacking and Van der Waals interactions were tested, due to the presence of terthiophene donors linked through an α-position or dodecyloxy chains. In addition, this possibility was also tested and compared to dyads with shorter substituents and the pristine C60. Research has shown that only in dyads with the features of liquid crystals, π-dimerization of C60 units occurs, which was verified by electrochemical and spectroelectrochemical (ESR) measurements. Cyclic voltammetry and differential voltammetry studies reveal π-dimerization in liquid crystal dyad solution even without the possibility of previous polymerization (cathodic or anodic) under conditions in the absence of irradiation and without the availability of reaction initiators, and even with the use of preliminary homogenization. These dyads undergo six sequential, one-electron reductions of π-dimer (R-C60···C60-R), where two electrons are added successively to each of the two fullerene cages and first form two radical anion system (R-C60)•−(R-C60)•− without pairing with the characteristics of two doublets. Similarly, the second reductions of π-dimer occur at potentials that are close to the reduction potential for the conversion to a system of two triplet dianions (R-C60)2−(R-C60)2−. Electron paramagnetic resonance spectra indicate a significant interaction between C60 cages. Interestingly, the strength of intermolecular bonds is so significant that it can overcome Coulombic repulsion, even with such highly charged particles as dianions and trianions. Such behavior has been revealed and studied so far only in covalently bonded C60 dimers.
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Affiliation(s)
- Malgorzata Czichy
- Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland;
- Correspondence:
| | - Alessia Colombo
- Department of Chemistry, University of Milan, UdR dell’INSTM, Via Golgi 19, 20133 Milan, Italy; (A.C.); (C.D.)
| | - Pawel Wagner
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, Northfields Avenue, Wollongong, NSW 2522, Australia; (P.W.); (D.L.O.)
| | - Patryk Janasik
- Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland;
| | - Claudia Dragonetti
- Department of Chemistry, University of Milan, UdR dell’INSTM, Via Golgi 19, 20133 Milan, Italy; (A.C.); (C.D.)
| | - Rathinam Raja
- Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan; (R.R.); (L.W.)
| | - David L. Officer
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, University of Wollongong, Northfields Avenue, Wollongong, NSW 2522, Australia; (P.W.); (D.L.O.)
| | - Leeyih Wang
- Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan; (R.R.); (L.W.)
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
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Faraonov MA, Romanenko NR, Mikhailenko MV, Kuzmin AV, Khasanov SS, Konarev DV. Structure and properties of radical anion and dianion salts of organic dye trans-perinone and its mixed salt with gallium( iii) phthalocyanine. NEW J CHEM 2021. [DOI: 10.1039/d1nj01636a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reduction of organic dye trans-perinone in different experimental conditions was studied. New crystallite salts containing reduced species of trans-perinone together with mixed salt with GaIIIClPc radical anions were obtained and characterized.
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Affiliation(s)
- Maxim A. Faraonov
- Institute of Problems of Chemical Physics RAS
- Chernogolovka
- Moscow region
- Russia
| | - Nikita R. Romanenko
- Institute of Problems of Chemical Physics RAS
- Chernogolovka
- Moscow region
- Russia
| | | | - Alexey V. Kuzmin
- Institute of Solid State Physics RAS
- Chernogolovka
- Moscow region
- Russia
| | | | - Dmitri V. Konarev
- Institute of Problems of Chemical Physics RAS
- Chernogolovka
- Moscow region
- Russia
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Konarev DV. Radical anion and coordination compounds of polyconjugated molecules:potential organic materials with unusual magnetic, conducting and optical properties. MENDELEEV COMMUNICATIONS 2020. [DOI: 10.1016/j.mencom.2020.05.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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