cif-access (organic compounds)
As it was found, the structures of N,N'-dimethoxy-2,3-dimethyl-N,N'-dinitroso-2,3-butanediamine, (1), C8H18N4O4, and N-formyl-N,N'-dimethoxy-2,3-dimethyl-N'-nitroso-2,3-butanediamine, (2), C9H19N3O4, are isomorphic. Molecules occupy centers of symmetry and have almost the same geometry with a marked difference only for nitroso and formyl groups because of disorder in (2). Bond lengths of the alkoxynitrosoamine group have some differences compared with nitrosoamines.