The crystal structure of copper(II) (R,S)‐1‐amino‐2‐propanol chloride

Copper(II) (R,S)-1-amino-2-propanol chloride, Cu(C3NOH9),Cl2, is monoclinic. The lattice constants at 22°C are a = 8.050(5), b = 10.930(6), c = 8.120(6) A, β = 92.20(6)°, Z = 4 and μ(MoKα) = 37.95 cm−1. Extinctions 0k0 with k odd indicate the space group P21, but weak reflections h0l with l odd demonstrate that the symmetry almost corresponds to P21/c. The structure was solved by Patterson methods. Least-squares refinement in P21/c was unsatisfactory but refinement in P21 resulted in a final R value of 0.038 for 2192 reflections, 1772 of which have intensities greater than 2σ(I). The structure is disordered and shows three conformations of the ligand, i.e. the structure contains as major form, (58%), ligands A and Ā and as minor form, (42%), ligands B and C. In all cases the copper atoms are coordinated octahedrally by four chlorine atoms, one nitrogen and one oxygen atom. Two chlorine atoms are bound at 2.273(1) A and 2.247(1) A and two at 2.993(1) A and 3.181(1) A.