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Original Articles

THE PHENOMENON OF CONGLOMERATE CRYSTALLIZATION. XXVI. THE CRYSTAL AND MOLECULAR STRUCTURE OF RACEMIC NH4[Cr(EN)2OX]CL2·H2O (I) AND ATTEMPTS TO PREPARE NH4[Co(EN)2OX]CL2·H2O (II)

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Pages 7-16 | Received 03 Aug 1992, Published online: 23 Sep 2006

References

  • Werner , A. 1914 . Chem. Ber. , 47 : 2171 Alfred Werner was the first to establish a large solubility difference between the racemate and the enantiomers of the Co and Cr compounds; see;
  • Yamasaki , K. , Igarishi , H. and Yoshikawa , Y. 1968 . Inorg. Nuclear Chem. Letters , 4 : 491 further work in this area was done by;
  • Yamanari , K. , Hidaka , J. and shimura , Y. 1973 . Bull. Chem. Soc. Japan , 46 : 3724 for a more quantitative description of the phase diagram of this substance see;
  • for the crystal structure of [Co(en)2ox]Br·H2O, determined from crystals of pre-resolved material, see ref. 3. However, that structural study (ref. 3) was carried out with a very limited set of film data; consequently, it lacks precision and no hydrogen atom positions were given for either the cation or the water of crystallization.
  • Bernal , I. , Cetrullo , J. , Myrczek , J. and Massoud , S. S. In general O., the former agrees with the results given in ref. 3; the latter is a new structural analysis. A detailed description and comparson of both will be published elsewhere, Using crystals from conglomerate crystallization experiments, we have determined the crystals structures of [Co(en)2ox]Br·H2O and [Co(en)2ox]Cl·4H2, to be published). Both compounds crystallize in the enantiomorphic space group P212121 with Z=4.
  • Aoki , T. , Matsumoto , K. , Ooi , S. and Kuroya , H. 1973 . Bull. Chem. Soc. Japan , 46 : 159
  • Gillard , R. D. and Tipping , L. H. R. 1977 . J. Chem. Soc., Dalton Trans. , : 1241
  • Bailar , J. C. Jr. 1946 . Inorganic Syntheses Vol. 2 , 198 New York : (McGraw-Hill .
  • Whuler , A. , Brouty , C. , Spinat , P. and Herpin , P. 1975 . Acta Cryst. , B31 : 2069
  • Box , P. O. Galbraith Laboratories, Inc., 51610, Knoxville, TN, 37950–1610.
  • Bailar , J. C. Jr. 1946 . Inorganic Syntheses Vol. 2 , 222 New York : (McGraw-Hill .
  • Jordan , W. T. and Froebe , L. R. 1978 . Inorganic Syntheses 96 New York : (McGraw-Hill . Vol. XVIII, p.
  • TEXRAY-230 is a modification of the SDP-Plus11 set of X-ray crystallographic programs distributed by Molecular Structure Corporation, 3200 Reseaarch Forest Dr., The Woodlands, TX 77386 for use with their automation of the CAD-4 diffractometer.
  • Frenz , B. A. SDP-Plus is the Enraf-Nonius Corporation X-ray diffraction data processing programs distributed by and Associates, 1140 East Harvey Road, College Station, TX, 77840.
  • Roof , R. B. 1969 . A Theoretical Extension of the Reduced Cell Concept in Crystallography Los Almos Scientific Laboratory : Report LA-4038 .
  • Cromer , D. T. and Waber , J. T. 1975 . International Tables for X-Ray Crystallography Birmingham, , England : the Kynoch Press . Vol. IV, Tables 2.2.8 and 2.3.1, respectively, for the scattering factor curves and the anomalous dispersion values.
  • Bernal , I. 1985 . Inorg. Chim. Acta , 96 : 99
  • Bernal , I. and Cetrullo , J. 1988 . Inorg. Chim. Acta , 144 : 227
  • Bernal , I. and Cetrullo , J. 1988 . Inorg. Chim. Acta , 150 : 75
  • Bernal , I. , Berthane , S. and Cetrullo , J. 1990 . Struct. Chem. , 1 : 361

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