%0 Journal Article
%T Synthesis and Crystal Structure of the Hydrogen Bromide Salt of 1,4,7,10-Tetrakis(2-((4-methoxy)phenoxy) ethyl)-1,4,7,10-tetraazacyclododecane
%A Wei Zhao
%A Yun Wang
%A Aijian Wang
%J Journal of Materials Science and Chemical Engineering
%P 1-11
%@ 2327-6053
%D 2017
%I Scientific Research Publishing
%R 10.4236/msce.2017.510001
%X A novel molecule tetra-N-alkylation of cyclen (1,4,7,10-tetraazacyclododecane), 1,4,7,10-tetrakis(2-((4-methoxy)phenoxy)ethyl)-1,4,7,10-tetraazacyclododecane <b>1</b>, was synthesized and structurally characterized by the single-crystal X-ray diffraction. The crystals were obtained from ethanol by slow evapora-tion at room temperature and the four hydroquinone groups of the benzene ring formed a ¦Ð-electron-rich cavity by C-H¡¤¡¤¡¤Br stacking interaction. The crystal belongs to the orthorhombic system, space group Pbcn with a = 17.3174(15), b = 12.9891(11), c = 19.3379(17) &Aring;, <i>¦Á</i>= <i>¦Â</i> = <i>¦Ã</i> = 90¡ã, V = 4349.8(7) &Aring;<sup>3</sup>, Z = 4, Dc = 1.304 g/cm<sup>3</sup>, C<sub>44</sub>H<sub>61</sub> BrN<sub>4</sub>O<sub>8</sub>, Mr = 853.88, F(000) = 1808, ¦Ì = 1.001 mm<sup>&minus;1</sup>, CuKa radiation (<i>¦Ë</i> = 0.71073), R = 0.0434 and wR = 0.1091 for 5200 observed reflections with I &gt; 2<i>¦Ò</i>(<i>I</i>).
%K Synthesis
%K Crystal Structure
%K Cyclen Derivative
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=79841