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Radeglia R, Wolff R, Steiger T, Simova S, Fanghänel E. Zum Einfluß der Z/E-Isomerie auf die15N-13C-Kopplungskonstanten2,3J(15N-13C) von aromatischen Azo- und Diazo-Verbindungen. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/prac.19843260321] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lobayan R, Aucar G. NMR-K reduced coupling constants within the CLOPPA-PM3 approach. II: shortcomings and how to overcome them. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s0166-1280(98)00090-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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3
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Correlated second-order perturbation studies of spin–spin nuclear coupling constants from CS-INDO molecular orbitals: polymethine compounds. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s0166-1280(98)00029-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Barszczewicz A, Helgaker T, Jaszuński M, Jo/rgensen P, Ruud K. Multiconfigurational self‐consistent field calculations of nuclear magnetic resonance indirect spin–spin coupling constants. J Chem Phys 1994. [DOI: 10.1063/1.468310] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Contreras R, de Azúa M, Giribet C, Aucar G, de Bonczok R. Viewpoint 8 — polarization propagator analysis of spin-spin coupling constants. ACTA ACUST UNITED AC 1993. [DOI: 10.1016/0166-1280(93)87009-3] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Olah GA, Stephenson M, Shih JG, Krishnamurthy V, Prakash G. One bond 13C-19F coupling constant as a criterion for fluorine back donation to an electron deficient carbocationic center. application of the tool of increasing electron demand to α-fluorodiaryl carbenium ions [1]. J Fluor Chem 1988. [DOI: 10.1016/s0022-1139(00)83071-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Pettegrew JW, Withers G, Panchalingam K, Post JF. Considerations for brain pH assessment by 31P NMR. Magn Reson Imaging 1988; 6:135-42. [PMID: 3374285 DOI: 10.1016/0730-725x(88)90443-2] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Recently in vivo NMR spectroscopy has been used to measure brain pH non-invasively. Both the inorganic orthophosphate (Pi) chemical shift (delta) and the difference between the chemical shifts of phosphocreatine (PCr) and Pi(delta delta PCr-Pi) have been proposed as indicators of brain pH. However, the precise delta of Pi may be difficult to determine under normoxic conditions as is the delta of PCr under hypoxic/ischemic conditions. Ideally one needs a NMR delta parameter that: (1) linearly changes between pH 6.0-8.0, (2) is either relatively unaffected or predictably affected by cations (e.g., Mg2+) other than H+, and that (3) comes from readily observable 31P NMR resonances whose delta's can be accurately assessed under all physiological conditions. Therefore, we undertook a systematic 31P NMR study of the pH and Mg2+ titration curves for 16 phosphorus-containing metabolites observed in brain by 31P NMR. On the basis of the titration curves, the delta delta's for PCr-Pi, phosphoethanolamine (PE)-Pi, and PCr-PE fulfill criteria (1) and (2), but not criterion (3). However, the delta delta of ATP gamma-alpha fulfills all three criteria and potentially provides information on the intracellular Mg2+ concentration.
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Affiliation(s)
- J W Pettegrew
- Department of Psychiatry, University of Pittsburgh, PA 15213
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Kamienska-Trela K, Biedrzycka Z, Machinek R, Knieriem B, Lüttke W. Substituent effects on nuclear spin-spin carbon-carbon coupling constants in derivatives of acetylene. ACTA ACUST UNITED AC 1984. [DOI: 10.1002/mrc.1270220509] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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9
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Steiger T, Radeglia R. INDO-Berechnung der15N-13C-Kopplungskonstanten von einfachen Cyaninen und Merocyaninen. ACTA ACUST UNITED AC 1984. [DOI: 10.1002/prac.19843260120] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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10
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Axenrod T, Watnick CM, Wieder MJ, Duangthai S, Webb GA, Yeh HJC, Bulusu S, King MM. Substituent effects on one-bond15N13C couplings inN,N-dimethylanilines and nitrobenzenes. Effect of steric inhibition of conjugation. ACTA ACUST UNITED AC 1982. [DOI: 10.1002/mrc.1270200104] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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11
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de Kowalewski DG, Contreras RH, Engelmann AR, Facelli JC, Durán JC. Transmission mechanisms of inter-proton long-range couplings in substituted anisoles. ACTA ACUST UNITED AC 1981. [DOI: 10.1002/mrc.1270170314] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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12
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Scuseria GE, Contreras RH. Unrestricted Hartree-Fock instabilities in semiempirical CNDO/S and INDO/S calculations of spin-spin coupling constants. ACTA ACUST UNITED AC 1981. [DOI: 10.1007/bf02402405] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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Wamsler T, Nielsen JT, Pedersen EJ, Schaumburg K. NMR studies of pyridazine-N-oxide. Determination of spectroscopic parameters from the [15N]- and parent species. ACTA ACUST UNITED AC 1981. [DOI: 10.1016/0022-2364(81)90050-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ando I, Webb GA. Some quantum chemical aspects of solvent effects on NMR parameters. ACTA ACUST UNITED AC 1981. [DOI: 10.1002/mrc.1270150202] [Citation(s) in RCA: 87] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Ando I, Asakura T, Watanabe S. A theoretical study of the dielectric solvent effect on vicinal spin coupling constants. ACTA ACUST UNITED AC 1981. [DOI: 10.1016/0166-1280(81)85116-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Sebald A, Wrackmeyer B. Indirect nuclear spin—spin coupling constants 1J(13C13C) in alkynes. ACTA ACUST UNITED AC 1981. [DOI: 10.1016/0584-8539(81)80104-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Scuseria GE, Contreras RH. Unrestricted Hartree-Fock instabilities in semiempirical CNDO/S and INDO/S calculations of spin-spin coupling constants. Theor Chem Acc 1980. [DOI: 10.1007/bf00553399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Berger HO, Noth H, Wi-Ackmeyer B. Kernresonanzspektroskopische Untersuchungen an 1-Hetero-4-stanna-2,5-cyclohexadienen. ACTA ACUST UNITED AC 1979. [DOI: 10.1002/cber.19791120813] [Citation(s) in RCA: 39] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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19
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Spectral density analysis of nuclear spin—spin coupling. III. Scanning molecular orbital studies for 1JX-X in X2Hn, X = C, Si, N, P. Chem Phys 1979. [DOI: 10.1016/0301-0104(79)85060-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Duangthai S, Webb GA. Some sum-over-states perturbation calculations of19F13C coupling constants for some carbocations and related fluorobenzenes. ACTA ACUST UNITED AC 1979. [DOI: 10.1002/mrc.1270120212] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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22
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Hansen PE, Poulsen OK, Berg A. 13C,13C coupling constants in phenyl substituted ethylene, naphthalene, phenanthrene and cyclopentadienone. Dependence on dihedral angles. Determination of signs by the symmetrical double labelling (SDL) method. IV. ACTA ACUST UNITED AC 1979. [DOI: 10.1002/mrc.1270120110] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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23
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Axenrod T, Wieder MJ, Khin T, Webb GA, Yeh HJC, Bulusu S. 13C NMR: Substituent effects on one-bond15N13C coupling constants in anilines and anilinium ions. ACTA ACUST UNITED AC 1979. [DOI: 10.1002/mrc.1270120102] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Samitov YY. Application of NMR spectroscopy for the study of the three-dimensional structures of hydrogenated heterocycles (review). Chem Heterocycl Compd (N Y) 1978. [DOI: 10.1007/bf00487394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Khin T, Webb GA. Some self-consistent perturbation calculations of15N13C coupling constants. ACTA ACUST UNITED AC 1978. [DOI: 10.1002/mrc.1270111003] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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26
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NMR studies of pyridine-N-oxide. Determination of spectroscopic constants from [15N]-, [4-2H], and the parent species. ACTA ACUST UNITED AC 1978. [DOI: 10.1016/0022-2364(78)90181-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Hansen PE, Berg A, Jakobsen HJ, Manzara AP, Michl J. 13C19F spin-spin coupling in some monofluoro-substituted polycyclic aromatic hydrocarbons. ACTA ACUST UNITED AC 1977. [DOI: 10.1002/mrc.1270100141] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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30
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Hansen PE, Poulsen OK, Berg A. 13C,13C coupling constants and13C chemical shifts of aromatic carbonyl compounds. Effects ofortho- andperi-interactions involving the carbonyl substituent. ACTA ACUST UNITED AC 1977. [DOI: 10.1002/mrc.1270091109] [Citation(s) in RCA: 44] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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31
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Wray V, Ernst L, Lustig E. The complete 13C 19F, and 1H spectral analysis of the fluorobenzenes C6H F6−. III. The remaining members of the series; INDO MO calculations of JFH, JFF, JCH, and JCF. ACTA ACUST UNITED AC 1977. [DOI: 10.1016/0022-2364(77)90188-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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32
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Evaluation of spin-dipole and orbital contributions to spin-spin coupling involving the 31P nucleus. THEOR EXP CHEM+ 1976. [DOI: 10.1007/bf00526899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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33
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Ewing DF. Direct and indirect substituent effects on1J(CH) in vinyl derivatives and related compounds. ACTA ACUST UNITED AC 1973. [DOI: 10.1002/mrc.1270051204] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Jacobsen JP, Snerling O, Pedersen EJ, Tormod Nielsen J, Schaumburg K. Hydrogen NMR spectra of pyridazine and pyrazole containing 15N. ACTA ACUST UNITED AC 1973. [DOI: 10.1016/0022-2364(73)90207-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Haigh C, Sykes S. Calculations of hydrogen—fluorine and fluorine—fluorine nuclear magnetic spinspin coupling anisotropies for fluorinated ethenes and benzenes oriented in liqiud crystal solvents. Chem Phys Lett 1973. [DOI: 10.1016/0009-2614(73)85150-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Hansen M, Jakobsen H. High-resolution 13C NMR spectra and long-range 13C1H spin coupling constants in pyridine and 2-bromopyridine. ACTA ACUST UNITED AC 1973. [DOI: 10.1016/0022-2364(73)90237-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Jensen H, Schaumburg K. Experimental and theoretical N.M.R. studies of the coupling constants in seven isotopic ethyl fluorides. Mol Phys 1971. [DOI: 10.1080/00268977100103361] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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