Nitrogen Schiff base ligands

Manganese(V) complexes of the Schiff base ligand salen and its derivatives have been the focus of intense study. These complexes have one additional ligand, either an 0x0, 0 , or a nitrido, group and much of the interest arises because these oxygen or nitrogen atoms are readily... 

It is possible for an appropriately designed ligand to force a seven-coordinate pentagonal bipyramidal structure upon a V(III) complex. An example is the Schiff-base ligand shown in Fig. 4 [40]. In the [VLCl2]Cl complex the five nitrogen donor atoms are in a single plane and... 

Some complexes which satisfy this definition are dealt with elsewhere, however. Those with X or Y as the Group V donors P, As or Sb are dealt with in Chapter 14 of this volume. Those with X or Y = Hg are described in Chapter 11 and the Group IV donors Si, Ge, Sn and Pb are included in Chapter 12.2, With very few exceptions this means that the relevant X,Y combinations are pairs derived from nitrogen, oxygen, sulfur or selenium donor groups. However, some specific examples of these combinations also occur elsewhere in this work. Amino acids (generally N—O bidentates) are covered in Chapter 20.2, Schiff base ligands (N—O or N—S) in Chapter 20.1, and several S—O... 

Polymer Schiff Base ligands containing a nitrogen atom in the bridge are easily synthesized by N-alkylation from various types of linear or crosslined ddoromethylated polystyrenes and low molecular N302-ligands Afterwards Ck>(n) was introduced to obtain the chelates with 2-4% Co (Eq. 25) and 60) is isolated. 

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