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Xie L, He A, Li D, Li T, Yang L, Huang K, Xu Y, Zhao G, Liu J, Liu K, Chen J, Ozaki Y, Noda I. Deprotonation from an OH on myo-Inositol Promoted by μ 2-Bridges with Possible Regioselectivity/Chiral Selectivity. Inorg Chem 2022; 61:6138-6148. [PMID: 35412316 DOI: 10.1021/acs.inorgchem.2c00288] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Single-crystal structures of myo-inositol complexes with erbium ([Er2(C6H11O6)2(H2O)5Cl2]Cl2(H2O)4, denoted ErI hereafter) and strontium (Sr(C6H12O6)2(H2O)2Cl2, denoted SrI hereafter) are described. In ErI, deprotonation occurs on an OH of myo-inositol, although the complex is synthesized in an acidic solution, and the pKa values of all of the OHs in myo-inositol are larger than 12. The deprotonated OH is involved in a μ2-bridge. The polarization from two Er3+ ions activates the chemically relatively inert OH and promotes deprotonation. In the stable conformation of myo-inositol, there are five equatorial OHs and one axial OH. The deprotonation occurs on the only axial OH, suggesting that the deprotonation possesses characteristics of regioselectivity/chiral selectivity. Two Er3+ ions in the μ2-bridge are stabilized by five-membered rings formed by chelating Er3+ with an O-C-C-O moiety. As revealed by the X-ray crystallography study, the absolute values of the O-C-C-O torsion angles decrease from ∼60 to ∼45° upon chelating. Since the O-C-C-O moiety is within a six-membered ring, the variation of the torsion angle may exert distortion of the chair conformation. Quantum chemistry calculation results indicate that an axial OH flanked by two equatorial OHs (double ax-eq motif) is favorable for the formation of a μ2-bridge, accounting for the selectivity. The double ax-eq motif may be used in a rational design of high-performance catalysts where deprotonation with high regioselectivity/chiral selectivity is carried out.
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Affiliation(s)
- Linchen Xie
- State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing 100871, China.,Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.,School of Biology and Medicine, Beijing City University, Beijing 100094, China
| | - Anqi He
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Da Li
- School of Biology and Medicine, Beijing City University, Beijing 100094, China
| | - Tianyi Li
- State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing 100871, China
| | - Limin Yang
- State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing 100871, China
| | - Kun Huang
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yizhuang Xu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Guozhong Zhao
- Department of Physics, Capital Normal University, Beijing Advanced Innovation Center of Imaging Technology, Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Beijing 100048, China
| | - Jingyu Liu
- Department of Physics, Capital Normal University, Beijing Advanced Innovation Center of Imaging Technology, Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Beijing 100048, China
| | - Kexin Liu
- State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing 100871, China
| | - Jia'er Chen
- State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing 100871, China
| | - Yukihiro Ozaki
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.,School of Biological and Environmental Sciences, Kwansei Gakuin University, Sanda, Hyogo 669-1337, Japan
| | - Isao Noda
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.,Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States
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Hu H, Xue J, Wen X, Li W, Zhang C, Yang L, Xu Y, Zhao G, Bu X, Liu K, Chen J, Wu J. Sugar–Metal Ion Interactions: The Complicated Coordination Structures of Cesium Ion with d-Ribose and myo-Inositol. Inorg Chem 2013; 52:13132-45. [DOI: 10.1021/ic402027j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Haijian Hu
- State Key Laboratory of Nuclear Physics and Technology,
Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing 100871, People’s Republic of China
- First Affiliated Hospital, Medical School, Xi’an Jiaotong University, Xi’an 710061, People’s Republic of China
| | - Junhui Xue
- Beijing
National Laboratory for Molecular Sciences, State Key Laboratory for
Rare Earth Materials Chemistry and Applications, College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
- Department of Chemistry, Renmin University of China, Beijing 100872, People’s Republic of China
| | - Xiaodong Wen
- State Key Laboratory of Nuclear Physics and Technology,
Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing 100871, People’s Republic of China
| | - Weihong Li
- Beijing
National Laboratory for Molecular Sciences, State Key Laboratory for
Rare Earth Materials Chemistry and Applications, College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
| | - Chao Zhang
- First Affiliated Hospital, Medical School, Xi’an Jiaotong University, Xi’an 710061, People’s Republic of China
| | - Limin Yang
- State Key Laboratory of Nuclear Physics and Technology,
Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing 100871, People’s Republic of China
| | - Yizhuang Xu
- Beijing
National Laboratory for Molecular Sciences, State Key Laboratory for
Rare Earth Materials Chemistry and Applications, College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
| | - Guozhong Zhao
- Department of Physics, Capital Normal University, Beijing 100037, People’s Republic of China
| | - Xiaoxia Bu
- Department of Physics, Capital Normal University, Beijing 100037, People’s Republic of China
| | - Kexin Liu
- State Key Laboratory of Nuclear Physics and Technology,
Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing 100871, People’s Republic of China
| | - Jia’er Chen
- State Key Laboratory of Nuclear Physics and Technology,
Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing 100871, People’s Republic of China
| | - Jinguang Wu
- Beijing
National Laboratory for Molecular Sciences, State Key Laboratory for
Rare Earth Materials Chemistry and Applications, College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
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Yang L, Wang Z, Zhao Y, Tian W, Xu Y, Weng S, Wu J. Complexation of trivalent lanthanide cations by inositols in the solid state: crystal structure and an FT-IR study of PrCl3.myo-inositol.9 H2O. Carbohydr Res 2000; 329:847-53. [PMID: 11125827 DOI: 10.1016/s0008-6215(00)00230-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The title compound, PrCl3.C6H12O6.9 H2O crystallized in the monoclinic space group P2(1)/n with cell dimensions a = 15.8293(3), b = 8.67750(10), c = 16.2292(3) A, beta = 107.0788(8) degrees, V = 2130.92(6) A3 and Z = 4. Each Pr ion is coordinated to nine oxygen atoms, two from the inositol and seven from water molecules, with Pr-O distances from 2.4729 to 2.6899 A; the other two water molecules are hydrogen-bonded. No direct contacts exist between Pr and Cl. There is an extensive network of hydrogen bonds formed by hydroxyl groups, water molecules, and chloride ions. The IR spectra of Pr-, Nd-, and Sm-inositol complexes are similar, which shows that the three metal ions have the same coordination mode. The IR results are consistent with the crystal structure.
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Affiliation(s)
- L Yang
- College of Chemistry and Molecular Engineering, Peking University, The University of Hong Kong Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing, PR China
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Abstract
The crystal structure of L-chiro-inositol is monoclinic, P21, with a = 6.867(3), b = 9.133(4), c = 6.217(3) A, beta = 106.59(4) degrees, Z = 2. The structure was solved by using MULTAN, and refined to R = 0.028 for 1065 intensities observed with Ni-filtered MoK alpha radiation. The molecule has the expected chair conformation, with puckering parameters Q = 0.561 A, theta = 4.4 degrees, phi = 51.2 degrees. The non-hydrogen molecular symmetry is close to C2, with deviations of less than 0.07 A from a weighted fit. The intramolecular hydrogen-bonding forms infinite chains which are cross-linked through the weaker component of a three-center bond. The C-C bond lengths range from 1.515 to 1.528 A, and the C-O bond lengths from 1.418 to 1.436 A. The C-C-C angles range from 109.7 to 113.1 degrees, and the C-C-O angles from 106.5 to 112.0 degrees.
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