Syntheses, characterizations, and crystal structures of organotin(IV) chloride complexes with 4,4′-bipyridine

✍ Scribed by Chunlin Ma; Junhong Zhang; Rufen Zhang

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 205 KB
• Volume: 15
• Category: Article
• ISSN: 1042-7163
• DOI: 10.1002/hc.20016

✦ Synopsis

The organotin(IV) chlorides R n SnCl 4-n (n = 3, R = Ph, PhCH 2 , n-Bu; and n = 2, R = n-Bu, Ph, PhCH 2 ) react with 4,4 -bipyridine (4 4-bpy) to give [(Ph 3 SnCl) 2 (4,4 -bpy) [(n-Bu) 3 SnCl] 2 (4,4 -bpy) (3), [(n-Bu) 2 SnCl 2 (4,4 -bpy)] ( 4), [Ph 2 SnCl 2 (4,4 -bpy)] ( 5), and [(PhCH 2 ) 2 SnCl 2 (4,4 -bpy)] ( 6). The new complexes have been characterized by elemental analyses, IR, 1 H, 13 C, 119 Sn NMR spectroscopy. The structures of ( 1), ( 2), ( 4), and ( 6) have been determined by X-ray crystallography. Crystal structures of ( 1) and ( 2) show that the coordination number of tin is five. In complex (1), two different molecules exist: one is a binuclear molecule bridged by 4,4 -bpy and another is a mononuclear one, only one N of 4,4 -bpy coordinate to tin. Complex (2) contains an infinite 1-D polymeric binuclear chain by weak Sn• • •Cl intermolecular interactions with neighboring molecules. In the complexes ( 4) and ( 6), the tin is sixcoordinate, and the 4,4 -bpy moieties bridge adjacent dialkyltin(IV)dichloride molecules to form a linear chain.