Synthesis, X-ray structures and magnetic properties of linear chain 4-cyanopyridine compounds: [Cu(4-CNpy)4(H2O)](ClO4)2 and M(4-CNpy)2Cl2 (M  Mn, Fe, Co, Ni, Cu)

Copper(II) complexes of 2-amino-5-chloro-3-fluoropyridine: syntheses and magnetic properties of (3,5-FCAP)2CuX2 and (3,5-FCAPH)2CuX4

“…Synthesis and studies of the structures and corresponding magnetic exchange properties of copper(II) halide coordination complexes and salts have been of interest to our research group for quite some time [1][2][3][4]. These systems merit study due to the low-dimensional anti-ferromagnetic exchange observed and the opportunity to compare and contrast packing motifs to gain insight into magneto-structural correlations.…”

“…Substituent position on the ring is also important as it affects hydrogen bond formation and other intermolecular interactions [10]. Methyl [11][12][13], amino [14][15][16], and other [1,17] groups have been used as substituents on pyridine rings in Cu(II) complexes that have been studied previously. These substituents modify the packing structure through the respective size of the substituent, through the introduction of possible hydrogen bond donors and acceptors into the complex, and through increased or decreased electron density in the pyridine ring.…”

Superoxidedismutase-mimetic copper(II) complexes containing saccharinate and 4-aminopyridine/4-cyanopyridine

“…The frequency of the most significant absorption bands in the IR spectra of the metal complexes is given in Table 3, along with their assignment based on previous results [19,[30][31][32][33]. In Figs.…”

New AgI Organometallic Coordination Polymers and MII (M = CuII and CoII) Inorganic Supramolecular Complexes Generated from New Fulvene‐Type Ligands

“…For example, in [Cu(4-cyanopyridine) 4 (H 2 O)(ClO 4 ) 2 ] n the nitrile nitrogen atom only weakly coordinates with copper centers through a ''semi-coordinated'' bond [CuϪNϵC 2.649(4) Å ], which is much longer than a normal CuϪN coordinative bond. [20] It is noteworthy that 4 contains uncoordinated N-donors, which have recently been suggested as potential new metalcontaining building blocks, [21] that could be connected by other suitable metal ions (Ag ϩ or Cd 2ϩ , for example) or unsaturated metal complexes via bonding interactions with the free nitrile nitrogen atoms in L2 (a possibility that we are pursuing). In the solid state ( Figure 7) the neutral building blocks 4 arrange parallel to the crystallographic c axis, and moreover are bound by strong intermolecular N···OϪH hydrogen bonds in a hand-in-hand fashion to create a one-dimensional chain motif along the crystallographic b axis.…”