Premium
Coupling of Silsesquioxane Cages in the Coordination Sphere of Erbium
Author(s) -
Lorenz Volker,
Blaurock Steffen,
Hrib Cristian G.,
Edelmann Frank T.
Publication year - 2010
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201000186
Subject(s) - chemistry , silsesquioxane , lanthanide , anhydrous , yield (engineering) , crystallography , coordination sphere , cluster (spacecraft) , molecule , erbium , ion , stereochemistry , medicinal chemistry , crystal structure , organic chemistry , polymer , materials science , physics , metallurgy , laser , optics , computer science , programming language
A novel transformation of silsesquioxane cages in the coordination sphere of a lanthanide ion is reported. Reaction of in situ prepared ( c ‐C 6 H 11 ) 7 Si 7 O 9 (OLi) 3 with anhydrous ErCl 3 in thf solution afforded the large heterometallic (Er/Li) metallasilsesquioxane cluster ( c ‐C 6 H 11 ) 21 Si 21 O 36 (SiMe 3 )Er 2 (thf) 2 Li 4 Cl 2 ( 2 ) in good yield (65 %). The molecular structure of 2 comprises several unusual features, including the coupling of two silsesquioxane cages through an –O 3 Si( c ‐C 6 H 11 )– unit as well as trimethylsilylation of an Si–OH functionality. Due to the presence of 21 cyclohexyl substituents in the periphery of the molecule, the large cluster compound is soluble even in pentane.