%0 Journal Article %T Crystal structure of a host¨Cguest complex of the tris-urea receptor, 3-(4-nitro-phen-yl)-1,1-bis-{2-[3-(4-nitro-phen-yl)ureido]eth-yl}urea, that encapsulates hydrogen-bonded chains of di-hydrogen phosphate anions with separate tetra-n-butyl-ammonium counter-ions %A Chao Huang %A Chuanqin Xia %A Ruyu Wang %A Shoujian Li %A Xi Shu %A Yongdong Jin %A Yu Fan %J Archive of "Acta Crystallographica Section E: Crystallographic Communications". %D 2019 %R 10.1107/S2056989019001336 %K crystal structure %K tris-urea %K tetra-n-butylammonium %K dihydrogen phosphate %K anionic polymer %K hydrogen bonding %K supramolecular three-dimensional structure %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6399704/