The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 1H-Pyrazole-5-carbaldehyde, is researched, Molecular C4H4N2O, CAS is 948552-36-1, about Proton NMR spectroscopy and magnetic properties of a solution-stable dicopper(II) complex bearing a single μ-hydroxo bridge, the main research direction is crystal structure copper dinuclear macrocycle hydroxo bridge; copper dinuclear macrocycle hydroxo bridge preparation structure NMR; proton NMR copper dinuclear macrocycle hydroxo bridge antiferromagnetic coupling; magnetic property copper dinuclear macrocycle hydroxo bridge; catechol oxidase model dicopper macrocycle hydroxo bridge.Synthetic Route of C4H4N2O.
The reaction of Cu(ClO4)2 with the macrocyclic ligand I ([22]py4pz) in the presence of base gives dinuclear [Cu2([22]py4pz)(μ-OH)](ClO4)3·H2O, in which two Cu ions are bridged by a single μ-hydroxo bridge. Each Cu ion is further surrounded by four N atoms of the ligand. The μ-hydroxo bridge mediates a strong antiferromagnetic coupling (2J = -691(35) cm-1) between the metal centers, leading to relatively sharp and well-resolved resonances in the 1H NMR spectrum of the complex in solution The authors herein report the crystal structure, the magnetic properties, and the full assignment of the hyperfine-shifted resonances in the NMR spectrum of the complex, deuterated and methylpyridine ligand derivatives, as well as the determination of the exchange coupling constant in solution through temperature-dependent NMR studies.
This compound(1H-Pyrazole-5-carbaldehyde)Synthetic Route of C4H4N2O was discussed at the molecular level, the effects of temperature and reaction time on the properties of the compound were discussed, and the optimum reaction conditions were selected.