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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 international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201811731
Subject(s) - anhydrous , hydrogen bond , polymer , crystal structure , crystallography , crystal (programming language) , chemistry , hydrogen , molecule , organic chemistry , computer science , programming language
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.