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The crystal structure of (-)-noradrenaline has been determined by X-ray methods, using 1000 observed reflections collected by counter diffractometer techniques. The crystals are orthorhombic, space group P212121, with a=8.611(2), B=6.138(2), And c=14.912(4) A. Least-squares refinements yielded a conventional R-factor of 0.036. Standard deviations in bond lengths are 0.003 A and in bond angles 0.2 degrees. The crystal structure of (-)-noradrenaline corresponds closely to that of (-)-adrenaline in molecular geometry, conformation, and arrangement in the crystals. The results of the structure investigations are discussed in relation to the biological activity of these biogenic amines.

acta chemica scandinavica/acta chemica scandinavica. b, organic chemistry and biochemistry/acta chemica scandinavica. a, physical and inorganic chemistry/acta chemica scandinavica. series b. organic chemistry and biochemistry/acta chemica scandinavica. series a, physical and inorganic chemistry

Structural Studies of Metabolic Products of Dopamine. IV. Crystal and Molecular Structure of (-)-Noradrenaline.