title: Piperazine-2,3,5,6-tetra-one.
abstract: The mol-ecule of the title compound, C(4)H(2)N(2)O(4), is located around an inversion center and the four O atoms are in the 2,3,5,6-positions of the piperazine ring. In the crystal, bifurcated N-H⋯O hydrogen bonds link the mol-ecules into a corrugated layer parallel to (101).
authors: Jing-Jing
authors: JJ
authors: Jia
authors: Xiu-Jin
authors: XJ
authors: Meng
authors: Shi-Zhang
authors: SZ
authors: Liang
authors: Shu-Hua
authors: SH
authors: Zhang
authors: Yi-Min
authors: YM
authors: Jiang
references: Acta Crystallogr D Biol Crystallogr. 2009 Feb;65(Pt 2):148-55
references: 19171970
references: J Org Chem. 2008 Oct 17;73(20):7939-51
references: 18798673
references: Arch Pharm (Weinheim). 1998 Dec;331(12):380-4
references: 9923192
references: Acta Crystallogr C. 2005 Feb;61(Pt 2):o118-21
references: 15695910
references: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references: 18156677