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Synthesis of a Molecule with Five Different Adjacent Pnictogens
Author(s) -
Ritter Christian,
Weigend Florian,
Hänisch Carsten
Publication year - 2020
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.202002279
Subject(s) - molecule , chemistry , crystallography , stereochemistry , medicinal chemistry , organic chemistry
The first molecular compound with all five pnictogens was obtained by a multi‐step reaction. Lithiation of the (bisamido)diazadiarsetidine ( t BuNAs) 2 ( t BuNH) 2 in aliphatic solvents leads to the dimeric metallated species [( t BuNAs) 2 ( t BuNLi) 2 ] 2 ( 1 2 ). Upon reactions with AsCl 3 , SbCl 3 and BiCl 3 the polycyclic compounds [( t BuNAs) 2 ( t BuN) 2 ]PnCl (Pn=As ( 2 ), Sb ( 3 ), Bi ( 4 )) can be obtained. Conversion of 2 – 4 with [ t Bu 2 SbP( t Bu)Li(OEt 2 )] 2 leads to the remarkable interpnictogens [( t BuNAs) 2 ( t BuN) 2 ]PnP( t Bu)Sb t Bu 2 (Pn=As ( 5 ), Sb ( 6 ), Bi ( 7 )), whereby 7 is the first example of a molecule containing all five Group 15 elements. The compound with adjacent AsNBiPSb‐chains is surprisingly stable and does not show high sensibility against light as the labile Bi−P bond might suggest.