Ad. Garnovskii et al., COMMON AND LESS-COMMON COORDINATION MODES OF THE TYPICAL CHELATING AND HETEROAROMATIC LIGANDS, Coordination chemistry reviews, 173, 1998, pp. 31-77
Data on the different modes of bonding the metals to the most widely s
pread chelating [beta-diketones, o-oxyazomethines, o-oxy(mercapto) der
ivatives of azoles and azines] and heteroaromatic ligands are generali
zed and systematized. It is shown that, besides the common beta-diketo
nates, aldiminates, phenolates and mercaptophenolates structures, thes
e complex compounds exhibit less-common modes of coordination. Five- a
nd six-membered heterocycles form sigma- as well as pi-complexes. (C)
1998 Elsevier Science S.A.