Mono-, di-, tetra- and heptanuclear copper(II) complexes with 4-(3,5-di-R-1H-pyrazol-1-yl)-6-methyl-2-(pyridin-2-yl)pyrimidines (R=H, Me): Syntheses, crystal structures and electrospray ionization mass spectrometry

Hysteretic spin crossover in isomeric iron(ii) complexes

Two mononuclear iron(ii) complexes with isomeric N,N,N-tridentate pyrimidine-based ligands were synthesized. Both complexes show reproducible hysteretic spin crossover. Low spin state to high spin state switching is cooperative due to autocatalysis.

Crystal structure of 1,1′-(butane-1,4-diyl)bis(5-methyl-1H-pyrazole-3-carbaldehyde), C14H18N4O2

C14H18N4O2, monoclinic, P21/c (no. 14), a = 4.4260(9) Å, b = 14.502(4) Å, c = 11.455(3) Å, β = 96.319(5)°, V = 730.8(3) Å3, Z = 2, Rgt(F) = 0.0712, wRref(F2) = 0.1946, T = 296(2) K.

A mononuclear iron(ii) complex: cooperativity, kinetics and activation energy of the solvent-dependent spin transition

A mononuclear iron(ii) pyrimidine-based complex shows remarkable spin crossover properties and unprecedented thermal robustness.

Mixed-valence copper(i,ii) complexes with 4-(1H-pyrazol-1-yl)-6-R-pyrimidines: from ionic structures to coordination polymers

All copper ions in a copper(i,ii) mixed-valence 1D-polymer show tetrahedral coordination cores, CuNBr₃ and CuN₂Br₂, which is extremely rare for mixed-valence copper(i,ii) compounds.

Magneto-structural correlation, antioxidant, DNA interaction and growth inhibition activities of new chloro-bridged phenolate complexes

The consistent stability constants as well as antioxidant, DNA interaction and cytotoxicity efficacy of chloro-bridged complexes have been established.