X-ray and neutron diffraction studies of the crystal and molecular structure of the predominant monocarboxylic acid obtained by mild acid hydrolysis of cyanocobalamin. Part III. Neutron diffraction studies of wet crystals

The molecular structure of the predominant monocarboxylic acid, E2, obtained by mild acid hydrolysis of cyanocobalamin has been determined by neutron diffraction with some support from x-ray diffraction. The undried crystals, formula probably C63H87O15N13PCo l6H2O, have unit cell parametersa = 14.91(1) A, b = 17.49(l)A, c = 16.41(1)A, β = 104.11(5)°; space group P21, Z = 2.