Triazole-bridged magnetic M(II) assemblies (M=Co, Ni) capped with the end-on terephthalate dianion involving multi-intermolecular contacts

Analyzing the binding of Co(II)-specific inhibitors to the methionyl aminopeptidases from Escherichia coli and Pyrococcus furiosus

“…However, the lack of an observable integer spin signal when A-310840 is complexed with Co(II)-loaded PfMetAP-II suggests that A-310840 may modulate anti-ferromagnetic coupling via a diazine bridge. Such a coupling interaction is consistent with the limited number of diazine-bridged dinuclear Co(II) model complexes [43-45]. The lack of intense parallel-mode signals is likely due to the weak K d values observed for the second Co(II) binding event (0.35 and 2.5 mM for PfMetAP-II and EcMetAP-I, respectively), which provides enzyme samples containing a mixture of both mononuclear and dinuclear Co(II) centers with the majority of sites in the mononuclear state [23, 28].…”

A Cadmium Anionic 1-D Coordination Polymer {[Cd(H2O)6][Cd2(atr)2(μ2-btc)2(H2O)4] 2H2O}n within a 3-D Supramolecular Charge-Assisted Hydrogen-Bonded and π-Stacking Network

“…1,2,4-Triazol-4-yl derivatives match the coordination geometry of pyrazoles with their N1 and N2 donor atoms, and can form different secondary building units (SBUs). The amino-functionalized triazole ligand 4-amino-1,2,4-triazole (atr) can coordinate to metal atoms to build molecular complexes [9,10], polynuclear complexes [11,12], inorganic-organic coordination polymers [13][14][15][16] and different dimensional metal-organic networks of mixed ligands [17,18].…”

Coordination Compounds of Palladium(II) and 4‐Amino‐1,2,4‐triazole

“…The nitrogen‐rich ligand 4‐amino‐1,2,4‐triazole (NH 2 trz, Figure ) forms an uncommonly broad range of structurally different complexes, since NH 2 trz can coordinate with one,, two, or even three, nitrogen atoms. Some of the resulting metal‐NH 2 trz compounds exhibit particular properties.…”

“…In metal‐NH 2 trz compounds characterized by single‐crystal X‐ray diffraction so far, coordination proceeds preferentially at nitrogen atoms of the triazole ring, and NH 2 trz has been found typically as a bridging ligand (in particular μ 2 ‐η 1 :η 1 coordination type, rarely μ 3 ‐η 1 :η 1 :η 1 coordination type). Accordingly, the majority of the hitherto known metal‐NH 2 trz compounds are of polynuclear nature, usually containing 2–3, or an “infinite” number of metal atoms , . Linear coordination polymers (including zigzag arrangement of metal atoms) were reported with iron(II), copper(II), and silver(I), two‐dimensional networks with silver(I), and three‐dimensional networks with silver(I) .…”

“…Linear coordination polymers (including zigzag arrangement of metal atoms) were reported with iron(II), copper(II), and silver(I), two‐dimensional networks with silver(I), and three‐dimensional networks with silver(I) . All in all, NH 2 trz complexes of the generic formula [ M x (NH 2 trz) y ] 2+ with M = iron(II), cobalt(II),, nickel(II),, copper(II), silver(I),, cadmium(II), and platinum(II) were unambiguously identified.…”