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Synthesis and characterization of a range of antimony(I/III) N , N ′‐bis(2,6‐diisopropylphenyl)formamidinate complexes
Author(s) -
Al-Dabbagh Areej,
Guo Zhifang,
Junk Peter,
Wang Jun
Publication year - 2021
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 17
ISSN - 2053-2296
DOI - 10.1107/s2053229621008512
Subject(s) - antimony , chemistry , trimethylsilyl , amide , tetrahydrofuran , monomer , halide , medicinal chemistry , stereochemistry , inorganic chemistry , organic chemistry , solvent , polymer
Formamidinatoantimony(I/III) complexes have been successfully synthesized as monomers or dimers in the solid state featuring a variety of coordination geometries and have also been comprehensively characterized. The antimony(I) formamidinate complex bis[μ‐ N , N ′‐bis(2,6‐diisopropylphenyl)formamidinato]diantimony(I)(2 Sb — Sb ) tetrahydrofuran heptasolvate, [Sb 2 (C 25 H 35 N 2 ) 2 ]·7C 4 H 8 O or [Sb 2 (DippForm) 2 ]·7THF, ( 1 ), was obtained by a metathesis reaction between sodium bis(trimethylsilyl)amide [NaN(SiMe 3 ) 2 ] and N , N ′‐bis(2,6‐diisopropylphenyl)formamidine (DippFormH), followed by SbCl 3 . A range of trivalent haloformamidinatoantimony(III) complexes, namely, bis[ N , N ′‐bis(2,6‐diisopropylphenyl)formamidinato]chloridoantimony(III), [Sb(C 25 H 35 N 2 ) 2 Cl] or [Sb(DippForm) 2 Cl], ( 2 ), bis[ N , N ′‐bis(2,6‐diisopropylphenyl)formamidinato]bromidoantimony(III), [SbBr(C 25 H 35 N 2 ) 2 ] or [SbBr(DippForm) 2 ], ( 3 ), bis[ N , N ′‐bis(2,6‐diisopropylphenyl)formamidinato]iodidoantimony(III), [Sb(C 25 H 35 N 2 ) 2 I] or [Sb(DippForm) 2 I], ( 4 ), [ N , N ′‐bis(2,6‐diisopropylphenyl)formamidinato]dibromidoantimony(III), [SbBr 2 (C 25 H 35 N 2 )] or [SbBr 2 (DippForm)], ( 5 ), and [ N , N ′‐bis(2,6‐diisopropylphenyl)formamidinato]diiodidoantimony(III), [Sb(C 25 H 35 N 2 )I 2 ] or [Sb(DippForm)I 2 ], ( 6 ), were also synthesized by adding DippFormH and M N(SiMe 3 ) 2 ( M = Li or Na) to the corresponding antimony halides Sb X 3 ( X = Cl, Br or I) in differing ratios. The complexes were all stable to rearrangement.