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Cation‐Triggered Stannate(II)/Stannylenoid/Stannylene Conversion
Author(s) -
Zhao Hui,
Li Junxia,
Xiao XuQiong,
Kira Mitsuo,
Li Zhifang,
Müller Thomas
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201800602
Subject(s) - chemistry , anhydrous , stannate , potassium , medicinal chemistry , lewis acids and bases , nuclear magnetic resonance spectroscopy , sodium , inorganic chemistry , stereochemistry , organic chemistry , catalysis , zinc
The reaction of dipotassio‐tetrasilan‐1,4‐diide ( 4 ) with anhydrous SnCl 2 at low temperature results in the formation of a five‐membered cyclic potassio chlorostannate(II) ([(18‐C‐6)K]( 1 )). By careful cation exchange reactions, it was transformed into the sodium chlorostannylenoid 2 (by using Na 2 [B 12 Cl 12 ]) or into the non‐stabilized cyclic bissilylstannylene 3 (through applying Li[Al(OC(CF 3 ) 3 ) 4 ]). The increasing Lewis basicity of the bissilylstannylene 3 was analyzed by combined methods of DFT calculations and NMR spectroscopy and substantiated by the synthesis of the corresponding iron carbonyl complexes 7 and 8 from the chlorostannate 1 and the stannylene 3 , respectively.