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Dunatov M, Zhao Z, Žilić D, Androš Dubraja L. A homochiral tartrate-bridged dinuclear chromium(III) complex anion with a resonance-assisted hydrogen bond for proton conduction. Dalton Trans 2024; 53:9315-9322. [PMID: 38747185 DOI: 10.1039/d4dt00783b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
The synthesis of a homochiral building block based on L-tartrate-chromium(III) complex anions is reported. The dinuclear complex anion, which contains two bridging L-tartrate ligands and one aromatic N-donor ligand coordinated to chromium(III) ions, exhibits a boat conformation in which intramolecular resonance-assisted hydrogen bonding is present. The sodium L-tartrate-chromium(III) compound with the formula Na[Cr2(bpy)2(L-tart)2H]·9H2O (1) crystallizes from a methanol-water solution as a high water content material in the monoclinic space group P2. The as-synthesized compound is only stable at high relative humidity and undergoes structural transformations during drying, which are accompanied by water loss. However, these transformations are reversible and upon wetting, the material returns to its high water content structure. Based on a combination of experimental techniques (PXRD, in situ ATR-FTIR and EPR spectroscopy), the structure of the complex anions appears to be insensitive to the humidity variable processes (wetting and drying). Due to the presence of several hydrogen acceptor and donor groups in the L-tartrate-chromium(III) complex anion, we investigated the proton transport properties of a sodium L-tartrate-chromium(III) compound by impedance spectroscopy under dry and wet conditions at different temperatures. Since the relative humidity affects the structural transformations in this system, it also has a large influence on the proton conductivity, which varies by up to four orders of magnitude depending on the degree of hydration. These results confirm that the proton conductivity can be tuned in flexible structures in which non-covalent interactions determine the crystal packing.
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Affiliation(s)
- Marko Dunatov
- Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia.
| | - Zhibo Zhao
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Kaiserstraße 12, 76131 Karlsruhe, Germany
| | - Dijana Žilić
- Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia.
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Dunatov M, Molčanov K, Štefanić Z, Kruk R, Androš Dubraja L. Interfacial Water Molecules as Agents for Phase Change Control and Proton Conductivity Enhancement in the Ammonium Vanadyl Tartrate System. Inorg Chem 2024; 63:163-172. [PMID: 38100051 DOI: 10.1021/acs.inorgchem.3c02605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
This study demonstrates the reversible structural transformation, single-crystal-to-single-crystal, of the ammonium vanadyl (L-tartrate) complex salt from the hydrate phase to the anhydrous phase. The transformation can be initiated by stimuli, such as temperature, humidity, or vacuum conditions. The hydrate and anhydrous phases exhibit a tetragonal structure (P41212), with marked differences in hydrogen bonding due to the presence or absence of one water molecule per asymmetric unit. The intricate relationship between crystal packing and intermolecular interactions in the hydrate phase was investigated by crystallographic charge density analysis revealing, at the molecular level, the reasons for the observed 5 orders of magnitude higher proton conductivity of the hydrate phase compared to that of the anhydrous phase. To gain further insight into the processes occurring at the surfaces of grain boundaries and the proton transfer mechanisms in this system, rehydration of the complex salt was carried out by using D2O instead of H2O and monitored by in situ ATR-FTIR spectroscopy. The results highlight the critical role of interfacial water molecules in driving structural transformations and influencing proton conductivity.
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Affiliation(s)
- Marko Dunatov
- Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia
| | | | - Zoran Štefanić
- Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia
| | - Robert Kruk
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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Bazhina ES, Aleksandrov GG, Sidorov AA, Eremenko IL. The formation of polymeric structures in the M2+–VO2+ systems (M2+ = Sr2+, Ca2+) containing substituted malonate anions. RUSS J COORD CHEM+ 2015. [DOI: 10.1134/s1070328415110019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Kaizaki S, Kato-Igawa Y, Tsukuda T, Nakano M. Synthesis and characterization of a series of bis(L-tartrate)-bridged dinuclear transition metal complexes with 2,2′-bipyridine. J COORD CHEM 2010. [DOI: 10.1080/00958971003681990] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Sumio Kaizaki
- a Graduate School of Science, Department of Chemistry, Osaka University , Toyonaka, Osaka 560-0043, Japan
| | - Yumiko Kato-Igawa
- a Graduate School of Science, Department of Chemistry, Osaka University , Toyonaka, Osaka 560-0043, Japan
| | - Toshiaki Tsukuda
- a Graduate School of Science, Department of Chemistry, Osaka University , Toyonaka, Osaka 560-0043, Japan
| | - Motohiro Nakano
- a Graduate School of Science, Department of Chemistry, Osaka University , Toyonaka, Osaka 560-0043, Japan
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Lodyga-Chruscinska E, Sanna D, Garribba E, Micera G. Potentiometric, spectroscopic, electrochemical and DFT characterization of oxovanadium(IV) complexes formed by citrate and tartrates in aqueous solution at high ligand to metal molar ratios: the effects of the trigonal bipyramidal distortion in bis-chelated species and biological implications. Dalton Trans 2008:4903-16. [PMID: 18766223 DOI: 10.1039/b803520b] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The complexation of VO(IV) ion with citrate (L3-), D-, L- and DL-tartrate (L2-) at high ligand to metal molar ratios was studied in aqueous solution through the combined application of potentiometric, spectroscopic (UV-vis and EPR) and electrochemical (cyclic voltammetry) techniques. Unlike in equimolar solution, mononuclear and not dinuclear species are formed with the binding of carboxylate-COO- and alcoholate-O- donors yielding mono- and bis-chelated species with VOLH, VOL, VOLH(-1) and VOL2H(-2) composition; for tartrates also the "sugar-like" (O-, O-) coordination is involved in the vanadium binding at basic pH values giving rise to the formation of VOL2H(-3) and VOL2H(-4) complexes. Among the species formed, VOL2H(-2) is characterised by a strong distortion towards the trigonal bipyramid with the two V-O(alcoholate) bonds in the equatorial and the two V-O(carboxylate) bonds in the axial positions. The geometry and electronic absorption spectra of such complexes were simulated by DFT methods and it was found that in aqueous solution the distortion follows the steric hindrance of the substituents on the alpha-carbon atom and the hydrophobicity of the ligands. The results were compared with those displayed by simple alpha-hydroxycarboxylates (glycolate, 2-hydroxyisobutyrate, 2-ethyl-2-hydroxybutyrate and benzilate). The trigonal bipyramidal distortion was correlated with the values of: i) Deltalambda = lambda2-lambda3, where lambda2 and lambda3 are the central bands in the electronic absorption spectrum; ii) |A(x)-A(y)|, where A(x) and A(y) are the 51V hyperfine coupling constants along the x and y axes in the anisotropic EPR spectrum; iii) the half-wave potential E(1/2) of oxidation of VO(IV) to the corresponding VO2(V) species in the cyclic voltammogram. Finally, a discussion on the possible form of VO(IV)-citrate complexes in blood serum is presented, where it is found that the most relevant species under physiological conditions should be [VO(citrH(-1))]2-.
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Affiliation(s)
- Elzbieta Lodyga-Chruscinska
- Institute of General Food Chemistry, Technical University of Lodz, ul. Stefanowskiego 4/10, PL-90924, Lodz, Poland
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Gil de Muro I, Lezama L, Insausti M, Rojo T. Layered [BaM(C
3
H
2
O
4
)
2
(H
2
O)
4
] (M = Fe or Co) Complexes − Spectroscopic, Magnetic and Thermal Study. Eur J Inorg Chem 2003. [DOI: 10.1002/ejic.200300077] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Izaskun Gil de Muro
- Dpto. Química Inorgánica, Facultad de Ciencias. UPV/EHU, Apdo. 644, 48080 Bilbao, Spain, Fax: (internat.) +34‐94/464‐8500
| | - Luis Lezama
- Dpto. Química Inorgánica, Facultad de Ciencias. UPV/EHU, Apdo. 644, 48080 Bilbao, Spain, Fax: (internat.) +34‐94/464‐8500
| | - Maite Insausti
- Dpto. Química Inorgánica, Facultad de Ciencias. UPV/EHU, Apdo. 644, 48080 Bilbao, Spain, Fax: (internat.) +34‐94/464‐8500
| | - Teófilo Rojo
- Dpto. Química Inorgánica, Facultad de Ciencias. UPV/EHU, Apdo. 644, 48080 Bilbao, Spain, Fax: (internat.) +34‐94/464‐8500
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Synthesis and structural characterization of an alternating double aquo-bridged and single cyano-bridged polymeric barium–iron complex: {[Ba2(phen)4(H2O)6Fe(CN)6]·Cl·2(phen)·3H2O}n. INORG CHEM COMMUN 2001. [DOI: 10.1016/s1387-7003(01)00316-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Arion VB, Kravtsov VC, Goddard R, Bill E, Gradinaru JI, Gerbeleu NV, Levitschi V, Vezin H, Simonov YA, Lipkowski J, Bel'skii VK. Oxovanadium(IV) and oxovanadium(IV)-barium(II) complexes with heterotopic macrocyclic ligands based on isothiosemicarbazide. Inorganica Chim Acta 2001. [DOI: 10.1016/s0164-1212(00)00107-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Cornman CR, Geiser-Bush KM, Rowley SP, Boyle PD. Structural and Electron Paramagnetic Resonance Studies of the Square Pyramidal to Trigonal Bipyramidal Distortion of Vanadyl Complexes Containing Sterically Crowded Schiff Base Ligands. Inorg Chem 1997. [DOI: 10.1021/ic970868z] [Citation(s) in RCA: 101] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Charles R. Cornman
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204
| | | | - Stephen P. Rowley
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204
| | - Paul D. Boyle
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204
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Dean NS, Bond MR, O'Connor CJ, Carrano CJ. Structure and Magnetism of Dibridged Vanadium(IV) Hydrotris(pyrazolyl)borate Dimers. Inorg Chem 1996. [DOI: 10.1021/ic9607705] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Norman S. Dean
- Department of Chemistry, Southwest Texas State University, San Marcos, Texas 78666, and Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148
| | - Marcus R. Bond
- Department of Chemistry, Southwest Texas State University, San Marcos, Texas 78666, and Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148
| | - C. J. O'Connor
- Department of Chemistry, Southwest Texas State University, San Marcos, Texas 78666, and Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148
| | - Carl J. Carrano
- Department of Chemistry, Southwest Texas State University, San Marcos, Texas 78666, and Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148
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Syntheses and structures of the potassium-ammonium dioxcitratovanadate (V) and sodium oxocitrato vanadate (IV) dimers. Inorganica Chim Acta 1995. [DOI: 10.1016/0020-1693(95)04677-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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García-Jaca J, Larramendi JIR, Insausti M, Arriortua MI, Rojo T. Synthesis, crystal structure and transport properties of a new non-stoichiometric CaVO3 +δphase. ACTA ACUST UNITED AC 1995. [DOI: 10.1039/jm9950501995] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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