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Egorochkin AN, Kuznetsova OV, Khamaletdinova NM, Domratcheva-Lvova LG. NQR parameters of complexes and polarizability effect. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2012; 50:40-51. [PMID: 22311277 DOI: 10.1002/mrc.3795] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Revised: 12/30/2011] [Accepted: 01/04/2012] [Indexed: 05/31/2023]
Abstract
The literature data on substituent influence on the nuclear quadrupole resonance frequencies (ν), quadrupole coupling constants (e(2) Qq ⋅ h(- 1) ), and asymmetry parameters (η) for 36 series of the H-complexes, charge-transfer complexes, transition metal complexes and other donor-acceptor complexes have been considered, using the correlation analysis. Generally the ν, e(2) Qq ⋅ h(- 1) , and η values were first established to depend on the inductive, resonance, polarizability, and steric effects of substituents. The presence or otherwise of certain effects as well as relation between their contributions are determined by the type of series. The polarizability effect owes its existence to the appearance of an excess charge on the indicator centre as a result of the complexation. The contribution of this effect ranges up to 75%.
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Affiliation(s)
- Alexey N Egorochkin
- G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, Nizhny Novgorod, Russia
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2
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Kolditz L, Moya T, Calov U, Kravčenko EA, Buslaev JA. Darstellung, Eigenschaften, Struktur und Anwendung von Trichlorosulfoniumverbindungen des Typs SCl3 + A−. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/zfch.19840240203] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Borchers D, Weiss A. Nuclear quadrupole coupling in hexachlorometallates A2[MCl6] and A'[MCl6], A⊕, A'2⊕ = several inorganic or organic cations, M = Sn, Pb, Te, Pt. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19890930507] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Borchers D, Weiss A. Structure, Hydrogen Bonds and Phase Transition in Ethylenediammonium Hexachlorometallates, [H3N(CH2)2NH3]2⊕ [XCI6]2⊖, X = Sn, Pb, Te, Pt. A 35Cl NQR and X-ray Diffraction Study. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19860900820] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Wulfsberg G, Weiss A. Halogen-Metal Secondary Bonding). An NQR Study in Mercury and Cadmium Halide Adducts of Polyethers. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19800840510] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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6
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Yamada K, Weiss A. The Bond Indium-Halogen in Isomorphous Complexes A2InX5 · H2O (A = K, NH4, Rb, Cs; X = Cl, Br). A 35Cl, 79,81Br, and 115In NQR study. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19830871019] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Harris RK, Becker ED, De Menezes SMC, Granger P, Hoffman RE, Zilm KW. Further conventions for NMR shielding and chemical shifts (IUPAC Recommendations 2008). MAGNETIC RESONANCE IN CHEMISTRY : MRC 2008; 46:582-598. [PMID: 18407566 DOI: 10.1002/mrc.2225] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
IUPAC has published a number of recommendations regarding the reporting of nuclear magnetic resonance (NMR) data, especially chemical shifts. The most recent publication [Pure Appl. Chem. 73, 1795 (2001)] recommended that tetramethylsilane (TMS) serve as a universal reference for reporting the shifts of all nuclides, but it deferred recommendations for several aspects of this subject. This document first examines the extent to which the (1)H shielding in TMS itself is subject to change by variation in temperature, concentration, and solvent. On the basis of recently published results, it has been established that the shielding of TMS in solution [along with that of sodium-3-(trimethylsilyl)propanesulfonate, DSS, often used as a reference for aqueous solutions] varies only slightly with temperature but is subject to solvent perturbations of a few tenths of a part per million (ppm). Recommendations are given for reporting chemical shifts under most routine experimental conditions and for quantifying effects of temperature and solvent variation, including the use of magnetic susceptibility corrections and of magic-angle spinning (MAS). This document provides the first IUPAC recommendations for referencing and reporting chemical shifts in solids, based on high-resolution MAS studies. Procedures are given for relating (13)C NMR chemical shifts in solids to the scales used for high-resolution studies in the liquid phase. The notation and terminology used for describing chemical shift and shielding tensors in solids are reviewed in some detail, and recommendations are given for best practice.
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Affiliation(s)
- Robin K Harris
- Department of Chemistry, University of Durham, South Road, Durham DH1 3LE, UK
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Harris RK, Becker ED, Cabral De Menezes SM, Granger P, Hoffman RE, Zilm KW. Further conventions for NMR shielding and chemical shifts IUPAC recommendations 2008. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2008; 33:41-56. [PMID: 18353619 DOI: 10.1016/j.ssnmr.2008.02.004] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2008] [Indexed: 05/26/2023]
Abstract
IUPAC has published a number of recommendations regarding the reporting of nuclear magnetic resonance (NMR) data, especially chemical shifts. The most recent publication [Pure Appl. Chem. 73, 1795 (2001)] recommended that tetramethylsilane (TMS) serve as a universal reference for reporting the shifts of all nuclides, but it deferred recommendations for several aspects of this subject. This document first examines the extent to which the (1)H shielding in TMS itself is subject to change by variation in temperature, concentration, and solvent. On the basis of recently published results, it has been established that the shielding of TMS in solution [along with that of sodium-3-(trimethylsilyl)propanesulfonate, DSS, often used as a reference for aqueous solutions] varies only slightly with temperature but is subject to solvent perturbations of a few tenths of a part per million (ppm). Recommendations are given for reporting chemical shifts under most routine experimental conditions and for quantifying effects of temperature and solvent variation, including the use of magnetic susceptibility corrections and of magic-angle spinning (MAS). This document provides the first IUPAC recommendations for referencing and reporting chemical shifts in solids, based on high-resolution MAS studies. Procedures are given for relating (13)C NMR chemical shifts in solids to the scales used for high-resolution studies in the liquid phase. The notation and terminology used for describing chemical shift and shielding tensors in solids are reviewed in some detail, and recommendations are given for best practice.
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Affiliation(s)
- Robin K Harris
- Department of Chemistry, University of Durham, South Road, Durham DH1 3LE, UK.
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Harris RK, Becker ED, Cabral de Menezes SM, Granger P, Hoffman RE, Zilm KW. Further conventions for NMR shielding and chemical shifts (IUPAC Recommendations 2008). PURE APPL CHEM 2008. [DOI: 10.1351/pac200880010059] [Citation(s) in RCA: 423] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
IUPAC has published a number of recommendations regarding the reporting of nuclear magnetic resonance (NMR) data, especially chemical shifts. The most recent publication [Pure Appl. Chem.73, 1795 (2001)] recommended that tetramethylsilane (TMS) serve as a universal reference for reporting the shifts of all nuclides, but it deferred recommendations for several aspects of this subject. This document first examines the extent to which the 1H shielding in TMS itself is subject to change by variation in temperature, concentration, and solvent. On the basis of recently published results, it has been established that the shielding of TMS in solution [along with that of sodium-3-(trimethylsilyl)propanesulfonate, DSS, often used as a reference for aqueous solutions] varies only slightly with temperature but is subject to solvent perturbations of a few tenths of a parts per million (ppm). Recommendations are given for reporting chemical shifts under most routine experimental conditions and for quantifying effects of temperature and solvent variation, including the use of magnetic susceptibility corrections and of magic-angle spinning (MAS). This document provides the first IUPAC recommendations for referencing and reporting chemical shifts in solids, based on high-resolution MAS studies. Procedures are given for relating 13C NMR chemical shifts in solids to the scales used for high-resolution studies in the liquid phase. The notation and terminology used for describing chemical shift and shielding tensors in solids is reviewed in some detail, and recommendations are given for best practice.
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Affiliation(s)
- Robin K. Harris
- 1Department of Chemistry, University of Durham, South Road, Durham DH1 3LE, UK
| | - Edwin D. Becker
- 2National Institutes of Health, Bethesda, MD 20892-0520, USA
| | - Sonia M. Cabral de Menezes
- 3PETROBRAS/CENPES/QM, Av. Horacio Macedo 950, Cidade Universitária, 21941-598, Rio de Janeiro, R.J., Brazil
| | - Pierre Granger
- 4Institute of Chemistry, University Louis Pasteur, Strasbourg, 1 rue Blaise Pascal, 67008 Strasbourg, Cedex, France
| | - Roy E. Hoffman
- 5Department of Organic Chemistry, The Hebrew University of Jerusalem, Safra Campus, Givat Ram, Jerusalem 91904, Israel
| | - Kurt W. Zilm
- 6Department of Chemistry, Yale University, P.O. Box 208107, New Haven, CT 06520-8107, USA
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Bakhmutov, VI, Vorontsov, EV. NMR SPIN-LATTICE RELAXATION APPROACHES TO CHARACTERIZATION OF TRANSITION METAL HYDRIDE COMPLEXES IN SOLUTION. REV INORG CHEM 1998. [DOI: 10.1515/revic.1998.18.3.183] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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11
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Poleshchuk OK, Nogaj B, Latosińska JN, Koput J. Electronic structure of bridging halogen atoms in metal halide dimers studied by the AM1 method and NQR spectroscopy. SOLID STATE NUCLEAR MAGNETIC RESONANCE 1996; 6:267-274. [PMID: 8863380 DOI: 10.1016/0926-2040(96)01232-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A nuclear quadrupole resonance (NQR) study of the electronic structure of bridging halogen atoms in dimers of transition and non-transition metal halides has been performed. An explanation of the differences in the NQR frequencies for transition and non-transition metal halides is proposed. The population of the bridging halogen atom orbitals and the metal-halogen bond lengths have been estimated by the AM1 method. The aim of this paper was to obtain a relationship describing the lengths of the metal-halogen bonds.
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Affiliation(s)
- O K Poleshchuk
- Inorganic Chemistry Division, Tomsk Pedagogical University, Russia
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12
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1H NMR studies on the motion of water molecules in magnesium hexachlorostannate(IV) and hexachlorotellurate(IV) hexahydrates. J Mol Struct 1995. [DOI: 10.1016/0022-2860(94)08447-p] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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13
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Ramamoorthy A. Double quantum nuclear quadrupole resonance spectroscopy of spinI= 7/2 nuclei in zero magnetic field. Mol Phys 1991. [DOI: 10.1080/00268979100101001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Raghoottama P, Soundararajan S, Ramakrishna J. Spectroscopic investigations of phase transition in 5-chloro-2-pyridone. J Mol Struct 1987. [DOI: 10.1016/0022-2860(87)87044-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abstract
Recent improvements in instrumentation and technique now permit the observation of high-resolution nuclear magnetic resonance spectra of many nuclei in inorganic solids. The application of nuclear magnetic resonance to the study of the structures of materials of interest in chemistry, earth science, and materials science are discussed together with a prognosis for future work.
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Chemical shift anisotropy and second-sphere hydrogen bondin in Cobalt (III) Complexes. ACTA ACUST UNITED AC 1983. [DOI: 10.1016/0022-2364(83)90162-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Influence of ammonium ions on the electronic structure of the hexafluorogermanate ion. J STRUCT CHEM+ 1983. [DOI: 10.1007/bf00735192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kume Y, Ikeda R, Nakamura D. Structural phase transition in various methylammonium hexahalometallates(IV) as studied by the NQR of halogens. ACTA ACUST UNITED AC 1979. [DOI: 10.1016/0022-2364(79)90252-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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