Premium
Crystal Structure of Regularly T h ‐Symmetric [U(NO 3 ) 6 ] 2− Salts with Hydrogen Bond Polymers of Diamide Building Blocks
Author(s) -
Takao Koichiro,
Kazama Hiroyuki,
Ikeda Yasuhisa,
Tsushima Satoru
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201811731
Subject(s) - anhydrous , crystal structure , polymer , hydrogen bond , crystallography , chemistry , crystal (programming language) , crystal engineering , hydrogen , molecule , organic chemistry , supramolecular chemistry , computer science , programming language
Abstract Hexanitratouranate(IV), [U(NO 3 ) 6 ] 2− , has been crystallized with anhydrous H + ‐involving hydrogen bond polymers connected by selected diamide building blocks. Thanks to the significant moderation of electrostatic interactions between the anions and cations, the molecular structure of [U(NO 3 ) 6 ] 2− in these compounds is regularly T h ‐symmetric. The f–f transitions stemming from 5f 2 configuration of U 4+ are strictly forbidden by the Laporte selection rule in such a centrosymmetric system, so that the obtained compounds are nearly colourless in contrast to other U IV species usually coloured in green.