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Original Articles

ASSIGNMENT OF THE GEOMETRIC ISOMERS OF BIS(L-ASPARTATO)COBALTATE(III) ION BY PROTON NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY

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Pages 183-187 | Received 17 Mar 1971, Published online: 13 Dec 2006

References

  • U.S. Public Health Service . This work was supported in part by a research grant (GM-10829) from the Division of General Medical Studies
  • NDEA . 1970 . Title IV Predoctoral Fellow , University of Pittsburgh . NRC-BuMin Postdoctoral Research Associate, U.S. Bureau of Mines, Pittsburgh, Pennsylvania 15213, 1970–71
  • Department of Education . Tsu, , Japan : Mie University .
  • Department of Chemistry . 1971 . Faculty of Science , Toyonaka, Osaka, , Japan : Osaka University, Research Associate, University of Pittsburgh .
  • Freeman , W. A. and Liu , C. F. 1968 . Inorg. Chem. , 7 : 764
  • Liu , C. F. and Ibers , J. A. 1969 . Inorg. Chem. , 8 : 1911
  • Freeman , W. A. and Liu , C. F. 1970 . Inorg. Chem. , 9 : 1191
  • Yamada , S. , Hidaka , J. and Douglas , B. E. 1971 . Inorg. Chem. , 10 : xxxx
  • Neal , J. A. and Rose , N. J. 1968 . Inorg. Chem. , 7 : 2405
  • Pople , J. A. , Schneider , W. G. and Bernstein , H. J. 1959 . High-resolution Nuclear Magnetic Resonance , 134 New York, New York : McGraw-Hill Book Co., Inc. .
  • Wiberg , K. B. and Nist , B. J. 1962 . The Interpretation of NMR Spectra , New York, New York : W. A. Benjamin, Inc. .
  • Karplus , M. 1959 . J. Chem. Phys. , 30 : 11 J. Am. Chem. Soc., 85, 2870 (1963); cf., S. Sternhell, Quart. Rev. 23, 236 (1969)
  • Beattie , J. K. and Elsbernd , H. Sr. 1970 . J. Am. Chem. Soc. , 92 : 1946 cf.
  • The range of values for ψBX calculated from the sets of J AX and J BX in Table I is 65–70°
  • It is assumed that the dihedral angle formed by projection of the tetrahedral angle H A —C—H B down the C—C bond axis is 120° and that ψ AX = 120°—ψ BX
  • Karabatsos , G. J. , Sonnichsen , G. C. , Hsi , N. and Fenoglio , D. J. 1967 . J. Am. Chem. Soc. , 89 : 5067
  • There is only one trans(N) isomer. The two cis(N) isomers are differentiated by the trans configuration of the oxygen donor atoms of the five-(O5) or six-membered (O6) rings
  • Berends , E. A. 1970 . Ph. D. Thesis Grand Forks, North Dakota : University of North Dakota . E. A. Berends and J. G. Brushmiller, Inorg. Nucl. Chem. Lett. 6, 847 (1970)
  • EDDS . is two L-aspartic acid dianions linked at the N atoms by an ethylene bridge, cf., I in Ref. 9
  • The arbitrary assignment of A and B in Ref. 9 is the reverse of that in this work, hence ψ AX in Ref. 9 is ψ BX in this work

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