Complexes of benzene-1,2-diol Mannich bases. I - Novel hexacoordinate zwitterionic silicon(IV) complexes

Citation
Mj. Caulfield et al., Complexes of benzene-1,2-diol Mannich bases. I - Novel hexacoordinate zwitterionic silicon(IV) complexes, AUST J CHEM, 54(6), 2001, pp. 375-381
Citations number
33
Categorie Soggetti
Chemistry
Journal title
AUSTRALIAN JOURNAL OF CHEMISTRY
ISSN journal
00049425 → ACNP
Volume
54
Issue
6
Year of publication
2001
Pages
375 - 381
Database
ISI
SICI code
0004-9425(2001)54:6<375:COBMBI>2.0.ZU;2-M
Abstract
This paper reports the synthesis and characterization of a number of novel silicon(IV) complexes with a range of mono-Mannich bases of benzene-1,2-dio l. Mannich bases of general structure 3-(dialkylaminomethyl) benzene-1,2-di ol form zwitterionic 6-coordinate tris complexes with silicon(IV), eliminat ing the need for an external counter ion. These complexes exhibit marked di fferences in their ability to partition between an aqueous and organic phas e compared with the analogous tris(benzene-1,2-diol) silicon(IV) complex. M annich bases of diamines and benzene-1, 2-diol will also complex to silicon ; however, they result in more complicated polymeric structures.