title: Two-dimensional hydrogen-bonded networks in two novel glycoluril derivatives.
abstract: Two new glycoluril derivatives, namely diethyl 6-ethyl-1,4-dioxo-1,2,2a,3,4,6,7,7b-octahydro-5H-2,3,4a,6,7a-pentaazacyclopenta[cd]indene-2a,7b-dicarboxylate, C(14)H(21)N(5)O(6), (I), and 6-ethyl-2a,7b-diphenyl-1,2,2a,3,4,6,7,7b-octahydro-5H-2,3,4a,6,7a-pentaazacyclopenta[cd]indene-1,4-dione, C(20)H(21)N(5)O(2), (II), both bearing two free syn-urea NH groups and two ureidyl C=O groups, assemble the same one-dimensional chains in the solid state running parallel to the [010] direction via N-H...O hydrogen bonds. Furthermore, the chains of (I) are linked together into two-dimensional networks via C-H...O hydrogen bonds.
authors.affiliation: Key Laboratory of Pesticide and Chemical Biology of the Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, People's Republic of China. chlpcao@mails.ccnu.edu.cn
authors.forename: Li-Ping
authors.initials: LP
authors.lastname: Cao
authors.forename: Xiang-Gao
authors.initials: XG
authors.lastname: Meng
authors.forename: Meng
authors.initials: M
authors.lastname: Gao
authors.forename: Neng-Fang
authors.initials: NF
authors.lastname: She
authors.forename: An-Xin
authors.initials: AX
authors.lastname: Wu
mesh_terms: D001372:Aza Compounds / Q000737:chemistry*; D003517:Cyclopentanes / Q000737:chemistry*; D006860:Hydrogen Bonding; D015394:Molecular Structure; D014508:Urea / Q000031:analogs & derivatives* / Q000737:chemistry*
chemical_list: C527860:6-ethyl-1,4-dioxo-1,2,2a,3,4,6,7,7b-octahydro-5H-2,3,4a,6,7a-pentaazacyclopenta(cd)indene-2a,7b-dicarboxylate; C527861:6-ethyl-2a,7b-diphenyl-1,2,2a,3,4,6,7,7b-octahydro-5H-2,3,4a,6,7a-pentaazacyclopenta(cd)indene-1,4-dione; D001372:Aza Compounds; D003517:Cyclopentanes; D014508:Urea