Additions and corrections
Hydrogen-bonding interactions in the series of complexes [M(C4O4)(OH2)2(dmf)2] and [M(C4O4)(OH2)4] (M = Mn, Co, Ni, Cu, Zn)
Bert D. Alleyne, Lincoln A. Hall, Hazel-Ann Hosein, Hema Jaggernauth, Andrew J. P. White and David J. Williams
J. Chem. Soc., Dalton Trans., 1998, 3845
The correct IUPAC name for aminosquarate is 2-amino-3,4-dioxocyclobut-1-en-1-olate and not 1-amino-2-methoxycyclobutenedionate as given in the summary of this paper.