Magnetic behavior of Co(II) chloride monocrystal with 1-allyltetrazole

Magnetic anisotropy of the single crystal of the cobalt(ii) chloride complex with 1 allyltetrazole (alltz) Co(alltz)$_{2}$Cl$_{2}$ was studied. Types of magnetic ordering and easy and hard magnetization axes were determined, their relationship with crystallographic axes was established. The Co(alltz)$_{2}$Cl$_{2}$ complex is a weak ferromagnet with T$_{\rm N} = 99.3$ K and possesses spontaneous magnetization $\sigma _{\rm S}$(4.5) = 1320 G cm$^{3}$ mol$^{-1}$. Hysteresis effects, depending on the intensity of the magnetic field in which the sample was cooled, were detected. Key words. Molecular magnets, single crystal, cobalt(II), tetrazole

Molecular magnets based on M(hfac)2_{2} and spin-labeled benzonitriles

A series of new heterospin complexes based on metal hexafluoroacetylacetonates with spin-labeled benzonitriles (NIT-$p$-PhCN and NIT-$m$-PhCN) were synthesized. It was shown that Ìn(hfac)$_{2}$ and Co(hfac)$_{2}$ complexes with NIT-$p$-PhCN are heterospin layered polymers magnetically ordered below 9-11 K. Among Ì(hfac)$_{2}$ complexes with NIT-$m$-PhCN possessing molecular or chain structures there are no magnetic ordering solids. Key words. Nitronyl nitroxides - metal complexes – structure- molecular magnets