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Samarium Polystibides Derived from Highly Activated Nanoscale Antimony
Author(s) -
Schoo Christoph,
Bestgen Sebastian,
Egeberg Alexander,
Klementyeva Svetlana,
Feldmann Claus,
Konchenko Sergey N.,
Roesky Peter W.
Publication year - 2018
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.201802250
Subject(s) - antimony , samarium , chemistry , nanoparticle , amalgam (chemistry) , ion , nuclear chemistry , crystallography , inorganic chemistry , nanotechnology , materials science , organic chemistry , electrode
Zintl ions in molecular compounds are of fundamental interest for basic research and application. Two reactive antimony sources are presented that allow direct access to molecular polystibide compounds. These are Sb amalgam (Sb/Hg) and ultrasmall Sb 0 nanoparticles ( d =6.6±0.8 nm), which were used independently as precursors for the synthesis of the largest f‐element polystibide, [(Cp* 2 Sm) 4 Sb 8 ]. Whereas the reaction of the nanoparticles with [Cp* 2 Sm] directly led to [(Cp* 2 Sm) 4 Sb 8 ], Sm/Sb/Hg intermediates were isolated when using Sb/Hg as the precursor. These Sm/Sb/Hg intermediates [{(Cp* 2 Sm) 2 Sb} 2 (μ‐Hg)] and [{(Cp* 2 Sm) 3 (μ 4 ,η 1:2:2:2 ‐Sb 4 )} 2 Hg] were synthetically trapped and structurally characterized, giving insight in the formation mechanism of polystibide compounds.