Synthesis and characterization of five new thiocyanato- and cyanato-metal(II) complexes with 4-azidopyridine as co-ligand

Synthesis, Structure, and Properties of Coordination Polymers with Layered Transition‐Metal Thiocyanato Networks

“…However, crystal structures with the same connectivity of the coordination network were recently reported for an azide compound with a different neutral co-ligand of composition [M(N 3 ) 2 (4-acetylpyridine) 2 ] n (M = Mn, Fe, Co, and Ni). [41][42][43][44] …”

“…This is one of the reasons why an increasing number of new compounds with different structures containing this ligand have been recently reported. [1][2][3][4][5][6][7][8][9][10][11][12][13] A similar situation is also found for selenocyanato coordination compounds, but they have been less investigated. [14][15][16][17][18][19][20] In this context, compounds in which paramagnetic metal cations are linked by the anionic ligands into coordination polymers are of special interest, because they show a rich variety of magnetic properties.…”

“…In one of the most common motifs, the metal cations are linked by pairs of μ-1,3-bridging anions into chains that can either be terminated by monodentate or linked into layers by bridging co-ligands ( Figure 1). [2,8,[21][22][23][24][25][26][27][28][29][30] However, in a few cases a different connectivity of the thiocyanato coordination network is observed ( Figure 1). This includes, for ex- ample, chains in which alternating terminal and μ-1,3-bridging thiocyanato anions or more 1D structures with μ-1,3-and μ-1,1,3-bridging anions are present (Figure 1).…”

“…This includes, for ex- ample, chains in which alternating terminal and μ-1,3-bridging thiocyanato anions or more 1D structures with μ-1,3-and μ-1,1,3-bridging anions are present (Figure 1). [31][32][33][34][35] However, in some cases 2D thiocyanato networks are observed, in which the metal cations are linked by single thiocyanato anions into layers, like in [Ni(NCS) 2 (2-methylpyrazine) 2 ] n , and the analogous Co compound in which the metal cations are linked by alternating pairs of thiocyanato anions and single thiocyanato anions into a 2D network ( Figure 1). [36,37] In our ongoing project on the synthesis, structure, and properties of such thiocyanato coordination polymers we were especially interested in systematic investigations on the influence of a chemical and structural modification on the magnetic properties of such compounds.…”

Synthesis, Structures and Properties of Cobalt Thiocyanate Coordination Compounds with 4-(hydroxymethyl)pyridine as Co-ligand

“…Compounds that consist of paramagnetic metal cations are of particular interest because they can show different magnetic properties and thus it is not surprising that an increasing number of new compounds were recently reported [5][6][7][8][9][10][11][12][13][14]. One group of these compounds are transition metal thiocyanato coordination polymers, which show a variety of different coordination modes including the terminal and the bridging coordination, with the latter being of special importance because cooperative magnetic properties can be expected [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34]. This is one reason why we are especially interested in thio-and selenocyanato coordination polymers, in which the metal centers are connected into chains by pairs of µ-1,3-bridging anionic ligands [35][36][37][38][39][40][41][42][43][44][45][46][47].…”