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Gon M, Tanaka K, Chujo Y. Vapochromic Luminescent π-Conjugated Systems with Reversible Coordination-Number Control of Hypervalent Tin(IV)-Fused Azobenzene Complexes. Chemistry 2021; 27:7561-7571. [PMID: 33780065 DOI: 10.1002/chem.202100571] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Indexed: 02/02/2023]
Abstract
The dynamic and reversible changes of coordination numbers between five and six in solution and solid states, based on hypervalent tin(IV)-fused azobenzene (TAz) complexes, are reported. It was found that the TAz complexes showed deep-red emission owing to the hypervalent bond composed of an electron-donating three-center four-electron (3c-4e) bond and an electron-accepting nitrogen-tin (N-Sn) coordination. Furthermore, hypsochromic shifts in optical spectra were observed in Lewis basic solvents because of alteration of the coordination number from five to six. In particular, vapochromic luminescence was induced by attachment of dimethyl sulfoxide (DMSO) vapor to the coordination point at the tin atom accompanied with a crystal-crystal phase transition. Additionally, the color-change mechanism and degree of binding constants were well explained by theoretical calculation. To the best of our knowledge, this is the first example of vapochromic luminescence by using stable and variable coordination numbers of hypervalent bonds.
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Affiliation(s)
- Masayuki Gon
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Kazuo Tanaka
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
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Baryshnikova SV, Poddel'sky AI, Bellan EV, Smolyaninov IV, Cherkasov AV, Fukin GK, Berberova NT, Cherkasov VK, Abakumov GA. Ferrocene-Containing Tin(IV) Complexes Based on o-Benzoquinone and o-Iminobenzoquinone Ligands. Synthesis, Molecular Structure, and Electrochemical Properties. Inorg Chem 2020; 59:6774-6784. [PMID: 32338505 DOI: 10.1021/acs.inorgchem.9b03757] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The addition of different substituted o-benzoquinones and o-iminobenzoquinones to tin(II) bis(o-iminophenolates) of the types (Fc-IP)2SnII and (Fc-4,6-IP)2SnII (where Fc-IP is anion 2-(ferrocenylmethyleneamino)phenolate [Fc-C(H)═N(C6H4)O-] and Fc-4,6-IP is anion 2-(ferrocenylmethyleneamino)-4,6-di-tert-butylphenolate [Fc-C(H)═N(4,6-tBu-C6H2)O-]) in tetrahydrofuran leads to the oxidation of Sn(II) to Sn(IV) with formation of the corresponding tin(IV) catecholates (Fc-4,6-IP)2SnIV(3,6-Cat) (1), (Fc-IP)2SnIV(3,6-Cat) (2), (Fc-4,6-IP)2SnIV(4-Cl-3,6-Cat) (3), (Fc-IP)2SnIV(4-Cl-3,6-Cat) (4), (Fc-4,6-IP)2SnIV(4,5-Cl2-3,6-Cat) (5), and (Fc-IP)2SnIV(4,5-Cl2-3,6-Cat) (6) or the o-amidophenolates (Fc-4,6-IP)2SnIV(AP-Me) (7), (Fc-IP)2SnIV(AP-iPr) (8), and (Fc-4,6-IP)2SnIV(AP-iPr) (9). Here ligands 3,6-Cat, 4-Cl-3,6-Cat, and 4,5-Cl2-3,6-Cat are dianions 3,6-di-tert-butyl-, 4-chloro-3,6-di-tert-butyl-, and 4,5-dichloro-3,6-di-tert-butylcatecholates, respectively, and AP-Me and AP-iPr are dianions 4,6-di-tert-butyl-N-(2,6-dimethylphenyl)-o-amidophenolate and 4,6-di-tert-butyl-N-(2,6-diisopropylphenyl)-o-amidophenolate, respectively. Complexes 1-9 have been characterized in detail by IR spectroscopy, cyclic voltammetry, and 1H, 13C, and 119Sn NMR spectroscopy. The molecular structures of tin(IV) complexes 5, 7, and 9 in the crystalline state were determined by single-crystal X-ray diffraction analysis. Complexes demonstrate a series of successive oxidations involving alternately catecholato/o-amidophenolato centers and ferrocenyl moieties. The relative oxidation potentials of these redox centers depend on the acceptor properties of the redox-active chelating O,O' or O,N ligand. An increase in the acceptor properties of redox-active o-quinonato-type ligands leads to an increase in the oxidation potentials of redox ligands as well as the following oxidation of ferrocenyl group(s). In two series of complexes, (Fc-4,6-L)2SnL' and (Fc-L)2SnL', where L' is AP-iPr, AP-Me, 3,6-Cat, 4-Cl-3,6-Cat, and 4,5-Cl2-3,6-Cat, a more pronounced convergence of the oxidation potentials of the redox-active o-quinonato ligand and ferrocenyl group occurs in the series (Fc-L)2SnL'.
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Affiliation(s)
- Svetlana V Baryshnikova
- G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, Tropinina strasse 49, Nizhny Novgorod 603137, Russia
| | - Andrey I Poddel'sky
- G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, Tropinina strasse 49, Nizhny Novgorod 603137, Russia
| | - Ekaterina V Bellan
- G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, Tropinina strasse 49, Nizhny Novgorod 603137, Russia
| | - Ivan V Smolyaninov
- Federal State Budgetary Institution of Science "Federal Research Centre the Southern Scientific Centre of the Russian Academy of Sciences", Chehova avenue 41, Rostov-on-Don 344006, Russia.,Astrakhan State Technical University, Tatisheva strasse 16, Astrakhan 414025, Russia
| | - Anton V Cherkasov
- G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, Tropinina strasse 49, Nizhny Novgorod 603137, Russia
| | - Georgy K Fukin
- G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, Tropinina strasse 49, Nizhny Novgorod 603137, Russia
| | - Nadezhda T Berberova
- Astrakhan State Technical University, Tatisheva strasse 16, Astrakhan 414025, Russia
| | - Vladimir K Cherkasov
- G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, Tropinina strasse 49, Nizhny Novgorod 603137, Russia
| | - Gleb A Abakumov
- G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, Tropinina strasse 49, Nizhny Novgorod 603137, Russia
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Hernández-Morales A, Rivera JM, López-Monteon A, Lagunes-Castro S, Castillo-Blum S, Cureño-Hernández K, Flores-Parra A, Villaseñor-Granados O, Colorado-Peralta R. Complexes containing benzimidazolyl-phenol ligands and Ln(III) ions: Synthesis, spectroscopic studies and preliminary cytotoxicity evaluation. J Inorg Biochem 2019; 201:110842. [PMID: 31536950 DOI: 10.1016/j.jinorgbio.2019.110842] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 09/06/2019] [Accepted: 09/07/2019] [Indexed: 11/18/2022]
Abstract
Fourteen new complexes were obtained from Ln(III)(NO3)3∙n-H2O and the chromophores 2-(1H-benzo[d]imidazol-2-yl)-phenol (Bzp1) or 2-(5-methyl-1H-benzo[d]imidazol-2-yl)-phenol (Bzp2). The complete characterization allowed us to assign unequivocally the structures of all the complexes. The techniques used for this purpose were Ultraviolet-Visible (UV-Vis) and Fourier-Transform Infrared (FT-IR) spectroscopies, High-Resolution Mass Spectrometry (HRMS), Magnetic Susceptibility (MS), Elemental Analysis (EA) and Molar Conductivity (MC). HRMS allowed us to find the molecular ion and its isotopic pattern. The FT-IR spectral data suggested that benzimidazolyl-phenol ligands coordinate with Ln(III) ions through iminic nitrogen and phenolic oxygen. Thermogravimetric Analysis (TGA) studies of NdBzp1 and GdBzp2 complexes indicate the presence of lattice water along with three nitrates and two benzimidazolyl-phenol ligands; the thermal decomposition was consistent with the minimal formula suggested by EA. The coordination type of the benzimidazolyl-phenol ligands, the geometry and the structural organization of these coordination complexes have been interpreted by Density Functional Theory (DFT) calculations, and they coincided with the physicochemical data suggesting a coordination number eight for the Ln(III) ions. The cytotoxicity of the chromophores and their coordination complexes was tested against a cancer cell line (HeLa), as compared with structure/support cells (NIH-3T3) and defense cells (J774A.1), revealing that three coordination complexes showed moderate cytotoxicity against the cell lines studied.
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Affiliation(s)
| | - José María Rivera
- Maestría en Ciencias en Procesos Biológicos, FCQ-UV, C.P. 94340 Orizaba, Ver., Mexico
| | - Aracely López-Monteon
- Maestría en Ciencias en Procesos Biológicos, FCQ-UV, C.P. 94340 Orizaba, Ver., Mexico
| | | | | | | | | | | | - Raúl Colorado-Peralta
- Maestría en Ciencias en Procesos Biológicos, FCQ-UV, C.P. 94340 Orizaba, Ver., Mexico.
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Baryshnikova SV, Bellan EV, Poddel'sky AI, Arsenyev MV, Smolyaninov IV, Fukin GK, Piskunov AV, Berberova NT, Cherkasov VK, Abakumov GA. Tin(IV) and Antimony(V) Complexes Bearing Catecholate Ligands Connected to Ferrocene - Syntheses, Molecular Structures, and Electrochemical Properties. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600885] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Svetlana V. Baryshnikova
- G.A. Razuvaev Institute of Organometallic Chemistry; Russian Academy of Sciences; 49 Tropinina Street, GSP-445 603950 Nizhny Novgorod Russia
| | - Ekaterina V. Bellan
- G.A. Razuvaev Institute of Organometallic Chemistry; Russian Academy of Sciences; 49 Tropinina Street, GSP-445 603950 Nizhny Novgorod Russia
| | - Andrey I. Poddel'sky
- G.A. Razuvaev Institute of Organometallic Chemistry; Russian Academy of Sciences; 49 Tropinina Street, GSP-445 603950 Nizhny Novgorod Russia
| | - Maxim V. Arsenyev
- G.A. Razuvaev Institute of Organometallic Chemistry; Russian Academy of Sciences; 49 Tropinina Street, GSP-445 603950 Nizhny Novgorod Russia
| | - Ivan V. Smolyaninov
- Astrakhan State Technical University; Tatisheva str. 16 414025 Astrakhan Russia
| | - Georgy K. Fukin
- G.A. Razuvaev Institute of Organometallic Chemistry; Russian Academy of Sciences; 49 Tropinina Street, GSP-445 603950 Nizhny Novgorod Russia
| | - Alexander V. Piskunov
- G.A. Razuvaev Institute of Organometallic Chemistry; Russian Academy of Sciences; 49 Tropinina Street, GSP-445 603950 Nizhny Novgorod Russia
| | | | - Vladimir K. Cherkasov
- G.A. Razuvaev Institute of Organometallic Chemistry; Russian Academy of Sciences; 49 Tropinina Street, GSP-445 603950 Nizhny Novgorod Russia
| | - Gleb A. Abakumov
- G.A. Razuvaev Institute of Organometallic Chemistry; Russian Academy of Sciences; 49 Tropinina Street, GSP-445 603950 Nizhny Novgorod Russia
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