1
|
Orts-Arroyo M, Monfort J, Moliner N, Martínez-Lillo J. Enantiomeric Complexes Based on Ruthenium(III) and 2,2'-Biimidazole: X-ray Structure and Magnetic Properties. Molecules 2023; 28:7213. [PMID: 37894692 PMCID: PMC10609436 DOI: 10.3390/molecules28207213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/02/2023] [Accepted: 10/07/2023] [Indexed: 10/29/2023] Open
Abstract
We have prepared and characterized two Ru(III) compounds based on the 2,2'-biimidazole (H2biim) ligand, namely, a single complex of formula cis-[RuCl2(H2biim)2]Cl·4H2O (1) and a racemic mixture of formula {cis-[RuCl2(H2biim)2]Cl}2·4H2O (2), which contains 50% of Ru(III) complex 1. Both compounds crystallize in the monoclinic system with space groups C2 and P21 for 1 and 2, respectively. These complexes exhibit the metal ion bonded to four nitrogen atoms from two H2biim molecules and two chloride ions, which balance part of the positive charges in a distorted octahedral geometry. Significant differences are observed in their crystal packing, which leads to the observation of differences in their respective magnetic behaviors. Despite having imidazole rings in both compounds, π-π stacking interactions occur only in the crystal structure of 2, and the shortest intermolecular Ru···Ru separation in 2 is consequently shorter than that in 1. Variable-temperature dc magnetic susceptibility measurements performed on polycrystalline samples of 1 and 2 reveal different magnetic behaviors at low temperatures: while 1 behaves pretty much as a magnetically isolated mononuclear Ru(III) complex with S = 1/2, 2 exhibits the behavior of an antiferromagnetically coupled system with S = 0 and a maximum in the magnetic susceptibility curve at approximately 3.0 K.
Collapse
Affiliation(s)
| | | | | | - José Martínez-Lillo
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgànica, Universitat de València, c/Catedrático José Beltrán 2, Paterna, 46980 València, Spain; (M.O.-A.); (J.M.); (N.M.)
| |
Collapse
|
2
|
Ogata K, Mido T, Siqingaowa, Noguchi K, Yonezawa N, Okamoto A. Ketone-hybridized Cyclic Water Hexamer with Chair-conformation in Crystal of Macrocyclic peri-Aroylnaphthalene Compound. CHEM LETT 2019. [DOI: 10.1246/cl.190663] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Kazuki Ogata
- Department of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture and Technology, 2-24-16, Nakamachi, Koganei, Tokyo 184-8588, Japan
| | - Takahiro Mido
- Department of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture and Technology, 2-24-16, Nakamachi, Koganei, Tokyo 184-8588, Japan
| | - Siqingaowa
- Department of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture and Technology, 2-24-16, Nakamachi, Koganei, Tokyo 184-8588, Japan
| | - Keiichi Noguchi
- Instrumentation Analysis Center, Tokyo University of Agriculture and Technology, 2-24-16, Nakamachi, Koganei, Tokyo 184-8588, Japan
| | - Noriyuki Yonezawa
- Department of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture and Technology, 2-24-16, Nakamachi, Koganei, Tokyo 184-8588, Japan
| | - Akiko Okamoto
- Department of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture and Technology, 2-24-16, Nakamachi, Koganei, Tokyo 184-8588, Japan
| |
Collapse
|
3
|
Ohata Y, Kamebuchi H, Watanabe K, Kouchi T, Suzuki Y, Imaizumi T, Sugaya T, Mizuno M, Tadokoro M. Slow Dynamics of Premelting Water Molecules Confined in a Hydrophilic Nanoporous Space. ChemistrySelect 2019. [DOI: 10.1002/slct.201901733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yuki Ohata
- Department of ChemistryFaculty of ScienceTokyo University of Science Kagurazaka1-3, Shinjuku-ku Tokyo 1628601 Japan
| | - Hajime Kamebuchi
- Department of ChemistryFaculty of ScienceTokyo University of Science Kagurazaka1-3, Shinjuku-ku Tokyo 1628601 Japan
| | - Keisuke Watanabe
- Department of Chemistry, Faculty of ScienceFukuoka University Nanakuma 8–19-1, Jyonann-ku Fukuoka 814-0180 Japan
| | - Takaya Kouchi
- Department of ChemistryFaculty of ScienceTokyo University of Science Kagurazaka1-3, Shinjuku-ku Tokyo 1628601 Japan
| | - You Suzuki
- Department of ChemistryFaculty of ScienceTokyo University of Science Kagurazaka1-3, Shinjuku-ku Tokyo 1628601 Japan
| | - Taku Imaizumi
- Department of ChemistryFaculty of ScienceTokyo University of Science Kagurazaka1-3, Shinjuku-ku Tokyo 1628601 Japan
| | - Tomoaki Sugaya
- Education Center, Faculty of EngineeringChiba Institute of Technology Shibazono 2–1-1, Narashino Chiba 275-0023 Japan
| | - Motohiro Mizuno
- Graduate School of Natural Science and TechnologyKanazawa University, Kakuma-machi Kanazawa 920-1192 Japan
| | - Makoto Tadokoro
- Department of ChemistryFaculty of ScienceTokyo University of Science Kagurazaka1-3, Shinjuku-ku Tokyo 1628601 Japan
| |
Collapse
|
4
|
Ohata Y, Kouchi T, Sugaya T, Kamebuchi H, Tadokoro M. Dynamic Water Nanotube Cluster Stabilized in Molecule-Based Hydrophilic Nanoporous Crystal with New Organic Spacers. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20180376] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Yuki Ohata
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Takaya Kouchi
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Tomoaki Sugaya
- Education Center, Faculty of Engineering, Chiba Institute of Technology, 2-1-1 Shibazono, Narashino, Chiba 275-0023, Japan
| | - Hajime Kamebuchi
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Makoto Tadokoro
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| |
Collapse
|
5
|
Matsui H, Iwamoto K, Mochizuki D, Osada S, Asakura Y, Kuroda K. Proton tunneling in low dimensional cesium silicate LDS-1. J Chem Phys 2015; 143:024503. [DOI: 10.1063/1.4926445] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Affiliation(s)
- Hiroshi Matsui
- Department of Physics, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Kei Iwamoto
- Department of Physics, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Dai Mochizuki
- Interdisciplinary Cluster for Cutting Edge Research, Center for Energy and Environmental Science, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
| | - Shimon Osada
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, Tokyo 169-8555, Japan
| | - Yusuke Asakura
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, Tokyo 169-8555, Japan
| | - Kazuyuki Kuroda
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, Tokyo 169-8555, Japan
- Kagami Memorial Research Institute for Material Science and Technology, Waseda University, Tokyo 169-0051, Japan
| |
Collapse
|
6
|
Suzuki A, Yui H. Crystallization of confined water pools with radii greater than 1 nm in AOT reverse micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:7274-7282. [PMID: 24885023 DOI: 10.1021/la501210t] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Freezing of water pools inside aerosol sodium bis(2-ethylhexyl) sulfosuccinate (AOT) reverse micelles has been investigated. Previous freezing experiments suffer from collision and fusion of AOT micelles and resultant loss of water from the water pool by shedding out during the cooling process. These phenomena have restricted the formation of ice to only when the radius of the water pool (Rw) is below 1 nm, and only amorphous ice has been observed. To overcome the size limitation, a combination of rapid cooling and a custom-made cell allowing thin sample loading is applied for instantaneous and homogeneous freezing. The freezing process is monitored with attenuated total reflection infrared spectroscopy (ATR-IR) measurements. A cooling rate of ca. -100 K/min and a sample thickness of ca. 50 μm overcomes the limitations mentioned above and allows the crystallization of water pools with larger radii (Rw > 1 nm). The corresponding ATR-IR spectra of the frozen water pools with Rw < 2.0 nm show similar features to the spectrum of metastable cubic ice (Ic). Further increase of the radius of the water pool (Rw > 2.0 nm), unfortunately, drastically decreased the integrated area of the ν(OH) band observed just after freezing, indicating the breakup of the micellar structure and shedding out of the water pool. In addition, it was revealed that Ic ice can also be formed in flexible organic self-assembled AOT reverse micelles for at least Rw ≤ ca. 2 nm, as well as in inorganic and solid materials with a pore radius of ca. 2 nm. The dependence of the phase transition temperature on the curvature of the reverse micelles is discussed from the viewpoint of the Gibbs-Thomson effect.
Collapse
Affiliation(s)
- Akira Suzuki
- Department of Chemistry, Faculty of Science, Tokyo University of Science , 1-3 Kagurazaka, Shinjuku-city, Tokyo 162-8601, Japan
| | | |
Collapse
|
7
|
Matsui H, Tadokoro M. Eigen-like hydrated protons traveling with a local distortion through the water nanotube in new molecular porous crystals {[MIII(H2bim)3](TMA)·20H2O}n (M = Co, Rh, Ru). J Chem Phys 2012; 137:144503. [DOI: 10.1063/1.4757974] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
|
8
|
Tadokoro M, Ohata Y, Shimazaki Y, Isoda K, Sugaya T. Pre-Melting Structure Transformation of Water Clusters in Nanoporous Molecular Crystals. Chemphyschem 2012; 13:3267-70. [DOI: 10.1002/cphc.201200414] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Indexed: 11/07/2022]
|
9
|
Tadokoro M, Iida C, Shimazaki Y, Isoda K, Suzuki Y, Sugaya T, Kumagai Y, Mizuno M. Water nanotubes clathrating solvent molecules stabilized by molecular 1-D nanoporous crystals. RSC Adv 2012. [DOI: 10.1039/c2ra21899b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
10
|
Tan YH, Wu JJ, Zhou HY, Yang LF, Ye BH. Anion and pH induced spontaneous resolution of Δ- and Λ-[M(H2Biim)3]SO4 (M = Ru2+, Co2+, Ni2+, Mn2+, Fe2+, and Zn2+) enantiomers. CrystEngComm 2012. [DOI: 10.1039/c2ce26334c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|