Stabilization of D5h and C2v valence tautomers of the croconate dianion.
The non-benzenoid aromatic D(5h) and enediolate C(2v) form of C5O5(2-) have been stabilized by hydrogen bonding with urea and 1,3-dimethylurea, respectively, in the host lattices of two novel crystalline inclusion compounds.
Lam
Chi-Keung
CK
Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, P. R. China.
Cheng
Mei-Fun
MF
Li
Chi-Lun
CL
Zhang
Jie-Peng
JP
Chen
Xiao-Ming
XM
Li
Wai-Kee
WK
Mak
Thomas C W
TC