Structures that should be described in higher-symmetry, centrosymmetric space groups. Part 2. The structures of [Ni(C5H4NO-2-CH = N-CH2CH2-N=CH-2-C5H4NO)(H2O)(2)]-(ClO4)(2), {Ni[C5H4NO-2-CH = N-CH(CH3)CH2-N = CH-2-C5H4NO](H2O)(2)}(ClO4)(2), {Cu[(C5H4NO-2-CH = N-N=C(NH2)S](H2O)}(2)(NO3)(2)center dotH2O and {[O2CCH2NHCH2CO2Cu]center dot(C10H8N2)}(2)center dot 12H(2)O

The space groups of the transition metal-Schiff base complexes, [Ni (C5H4NO -2-CH = N-CH2CH2-N = CH-2-C5H4NO). 2H(2)O](ClO4)(2) (described in Cc), [Ni( C5H4NO-2-CH = N-CH(CH3)CH2 -N = CH-2-C5H4NO). 2H(2)O](ClO4)(2) (described i n An) and {Cu[(C5H4NO-2-CH = N-N = C(NH2)S] (H2O)}(2) (NO3)(2).H2O (describ ed in Cc), have been revised to C2/c. The general descriptions of the first two structures are unchanged in the higher-symmetry setting; for the last structure, the copper atom is re-assigned an octahedral coordination geomet ry instead of the reported square-pyramidal coordination geometry. The spac e group of {[CuO2CCH2NHCH2CO2]. (C10H8N2)}(2). 12H(2)O is similarly revised from P1 to P (1) over bar. Atomic coordinates for the revised structures a re reported.