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Janas Z, Jezierska J, Ozarowski A, Bieńko A, Lis T, Jezierski A, Krawczyk M. Investigation of vanadium(III) and vanadium(IV) compounds supported by the linear diaminebis(phenolate) ligands: correlation between structures and magnetic properties. Dalton Trans 2021; 50:5184-5196. [PMID: 33881036 DOI: 10.1039/d0dt04302h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A family of oxidovanadium(iv) compounds containing linear diaminebis(phenolate (salans) L1-5 ligands (L1 = [MeNCH2CH2NMe(CH2-4-CMe2CH2CMe3-C6H3O)2]2-; L2 = [MeNCH2CH2NMe(CH2-4-CH3-C6H3O)2]2-; L3 = [MeNCH2CH2NMe(CH2-4-Cl-C6H3O)2]2-; L4 = {MeNCH2CH2NMe[CH2-4,6-(CH3)2-C6H2O]2}2-; and L5 = {MeNCH2CH2NMe[CH2-4,6-(Br)2-C6H2O]2}2-) and non-oxidovanadium(iii) with L2,4 and acac ligands has been prepared and characterized by chemical and physical techniques. Reactions of [VO(acac)2] with ligand precursors H2L2,4 in toluene or hexane afforded vanadium(iii) compounds [V(L-κ4ONNO)(acac)] (1, L2; 2, L4), while the use of acetonitrile or ethanol led to the formation of dimeric oxidovanadium(iv) [(VO)2(μ-L-κ4ONNO)2] (3, L1; 4, L2; 5, L3) and monomeric [VO(L-κ4ONNO)] (6, L4, 7, L5) compounds. As shown by X-ray crystallography, compounds 1 and 2 are monomeric, in which the chelating ligands afford octahedral cis-α geometry at the vanadium center. In the dimeric structures of 3-5, the six-coordinate vanadium centers are bridged via two oxygen atoms of the L1-3 ligands while the L4,5 ligands generate square pyramidal structures of the monomeric 6 and 7 compounds. HFEPR studies allowed the determination of the spin Hamiltonian parameters of the S = 1 spin state of the monomeric V(iii) and dimeric V(iv), and S = ½ in monomeric V(iv) compounds. Magnetic measurements of 3-5 indicated weak ferromagnetic metal-metal exchange interactions. A reaction course for the deoxygenation and reduction of vanadyl-salan compounds is proposed.
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Affiliation(s)
- Zofia Janas
- Faculty of Chemistry, University of Wrocław, 14, F. Joliot-Curie, 50-383 Wrocław, Poland.
| | - Julia Jezierska
- Faculty of Chemistry, University of Wrocław, 14, F. Joliot-Curie, 50-383 Wrocław, Poland.
| | - Andrew Ozarowski
- National High Magnetic Field Laboratory, Florida State University, 1800 E. Paul Dirac Drive, Tallahassee, FL 32310, USA.
| | - Alina Bieńko
- Faculty of Chemistry, University of Wrocław, 14, F. Joliot-Curie, 50-383 Wrocław, Poland.
| | - Tadeusz Lis
- Faculty of Chemistry, University of Wrocław, 14, F. Joliot-Curie, 50-383 Wrocław, Poland.
| | - Adam Jezierski
- Faculty of Chemistry, University of Wrocław, 14, F. Joliot-Curie, 50-383 Wrocław, Poland.
| | - Marta Krawczyk
- Faculty of Pharmacy, Wrocław Medical University, 211 Borowska, 50-556 Wrocław, Poland
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Sakuramoto T, Hirao T, Tobisu M, Moriuchi T. Oxovanadium(V)‐Catalyzed Direct Amination of Allyl Alcohols. ChemCatChem 2019. [DOI: 10.1002/cctc.201801841] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Takashi Sakuramoto
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamada-oka 565-0871 Japan
| | - Toshikazu Hirao
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamada-oka 565-0871 Japan
- Present address: The Institute of Scientific and Industrial Research Osaka University Mihoga-oka 567-0047 Japan
| | - Mamoru Tobisu
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamada-oka 565-0871 Japan
| | - Toshiyuki Moriuchi
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamada-oka 565-0871 Japan
- Present address: Division of Molecular Materials Science Graduate School of Science Osaka City University Sumiyoshi-ku 558-8585 Japan
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Moriuchi T, Sakuramoto T, Nishina M, Kawai R, Hirao T. Structural Characterization of (Arylimido)vanadium(V) Compounds with 2,6-Difluorophenoxide Ligand. Z Anorg Allg Chem 2017. [DOI: 10.1002/zaac.201700205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Toshiyuki Moriuchi
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University; Yamada-oka, Suita 565-0871 Osaka Japan
| | - Takashi Sakuramoto
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University; Yamada-oka, Suita 565-0871 Osaka Japan
| | - Masafumi Nishina
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University; Yamada-oka, Suita 565-0871 Osaka Japan
| | - Ryota Kawai
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University; Yamada-oka, Suita 565-0871 Osaka Japan
| | - Toshikazu Hirao
- Department of Applied Chemistry, Graduate School of Engineering; Osaka University; Yamada-oka, Suita 565-0871 Osaka Japan
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Sakuramoto T, Hirao T, Moriuchi T. Structural Characterization of (Diphenylhydrazido)vanadium(V) Compounds. ChemistrySelect 2017. [DOI: 10.1002/slct.201700833] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Takashi Sakuramoto
- Department of Applied Chemistry; Graduate School of Engineering; Osaka University, Yamada-oka; Suita, Osaka 565-0871 Japan), Fax: (+81) 6-6879-7415
| | - Toshikazu Hirao
- Department of Applied Chemistry; Graduate School of Engineering; Osaka University, Yamada-oka; Suita, Osaka 565-0871 Japan), Fax: (+81) 6-6879-7415
| | - Toshiyuki Moriuchi
- Department of Applied Chemistry; Graduate School of Engineering; Osaka University, Yamada-oka; Suita, Osaka 565-0871 Japan), Fax: (+81) 6-6879-7415
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Sakuramoto T, Hirao T, Moriuchi T. Structural Characterization of Chiral Vanadium(V) Compounds with V=N Bond. CHEM LETT 2017. [DOI: 10.1246/cl.170070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Takashi Sakuramoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamada-oka, Suita, Osaka 565-0871
| | - Toshikazu Hirao
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamada-oka, Suita, Osaka 565-0871
| | - Toshiyuki Moriuchi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamada-oka, Suita, Osaka 565-0871
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