Crystal engineering of hybrid inorganic–organic systems based upon complexes with dissymmetric compartmental ligands

Syntheses, Structures and Magnetic Properties of Trinuclear CuIIMIICuII (M = Cu, Ni, Co and Fe) and Tetranuclear [2×1+1×2] CuIIMnII–2CuII Complexes Derived from a Compartmental Ligand: The Schiff Base 3‐Methoxysalicylaldehyde Diamine Can also Stabilize a Cocrystal

“…On the other hand, although there are several 3d-3d compounds derived from H 2 L OMe -type ligands, cocrystallization does not take place in any case. [11,21] In fact, the second metal centre in most of the 3d-3d complexes derived from H 2 L OMe is not even coordinated to water molecule. We anticipated that if the second metal centre in the 3d-3d complexes derived from H 2 L…”

“…Some of the complexes have been found to exhibit interesting magnetic properties as well. [8][9][10][11] In the mononuclear 3d compounds derived from the ligands 3-methoxysalicylaldehyde diamine (H 2 L OMe ) and 3-ethoxysalicylaldehyde diamine (H 2 L OEt ), a 3d metal ion occupies the N 2 O 2 cavity. In both types of ligand systems, H 2 L OMe and H 2 L OEt , mononuclear inclusion products that contain an encapsulated water molecule in the O 4 compartment are known.…”

“…In both types of ligand systems, H 2 L OMe and H 2 L OEt , mononuclear inclusion products that contain an encapsulated water molecule in the O 4 compartment are known. [11,[13][14][15][16]18] However, while mononuclear copper(II), nickel(II) and oxovanadium(IV) compounds [13][14][15][16][17] derived from H 2 L OEt -type ligands are dominated by inclusion products, [13][14][15][16] the inclusion of water takes place only rarely [18] in mononuclear compounds [11,18,19] derived from H 2 L OMe type ligands. Further, as in the mononuclear compounds, water encapsulation also takes place in the 3d-3d systems derived from H 2 L OEt -type ligands to result in the formation of interesting examples of tetrametallic [13][14][15] and heptametallic [15] self-assemblies consisting of cocrystallized dinuclear and mononuclear units.…”

Syntheses, structures and catecholase activity of two cobalt(III) complexes derived from N,N′-ethylenebis(3-ethoxysalicylaldiimine): A special host–guest system from a special ligand

“…Many mono/di/oligonuclear metal complexes have been reported from the following types of acyclic Schiff base ligands: (i) Single-compartment ligands (H 2 L Single ), obtained on [2+1] condensation of salicylaldehyde/2-hydroxyacetophenone/2-hydroxypropiophenone and a diamine [1][2][3][4][5][6][7][8][9][10][11]; Double-compartment ligands H 2 L OMe [1,[12][13][14][15][16][17][18] and H 2 L OEt [1,[19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] ligands, obtained on [2+1] condensation of 3-methoxysalicylaldehyde and 3-ethoxysalicylaldehyde, respectively, and a diamine. It has been established that H 2 L OEt ligands are something special because its O(phenoxo) 2 O(ethoxy) 2 compartment is strongly potential to act as a hydrogen bond acceptor with hydrogen bond donors such as water [1,[19][20][21][22][23][24][25]…”

Heteropolynuclear Schiff-base complexes Cu–Ln–Fe (Ln=Sm & Pr) with magnetic property

“…Heterometallic 3d-4f complexes are currently of interest not only for their fascinating topological structures, but also for their various properties and potential applications as functional solid materials in luminescence, catalysis and magnetic materials [1][2][3][4][5][6][7][8][9]. In the past two decades, various 3d-4f heterodinuclear Schiff-base complexes have been studied stimulated by the interest in the molecular magnetism [10].…”