Maykon Alves Lemes

Unprecedented intramolecular pancake bonding in a {Dy2} single-molecule magnet The first example of unique coordination induced intramolecular pancake bonding was achieved through the reduction of two bis(pyrazolyl)-tetrazine ligands, affording [MIII2(μ-(bpytz)2)(THMD)4](M = Dy, Y; bpytz = 3,6-bis(3,5-dimethyl-pyrazolyl)-1,2,4,5-tetrazine; TMHD = 2,2,6,6-tetramethyl-3,5-heptanedionate).

A hexaazatrinaphtylene-based transition metal complex that exhibits single molecule magnet (SMM) behaviour is reported herein. Both monometallic (1) and bimetallic (2) CoII complexes with distorted octahedral geometries could be obtained through a straightforward change in synthetic conditions. Field induced SMM behaviour was exhibited by 1, with a D value of -60 cm-1 and Ueff = 17 K originating from the unquenched orbital angular momentum of the octahedral CoII (d7) centre.

Multivariate image analysis(MIA)-based approach in conjunction with chemometrics is proposed to evaluate the stability of nanofluids prepared by dispersing cobalt ferrite nanoparticles in mineral insulating oil under vigorous mechanical stirring (20.000 rpm, Ultra-Turrax). Three different magnetic fluids were evaluated: a) oleic acid-coated magnetic fluid (OAMF) at 0.00001% (m/v); b) stearic acid-coated magnetic fluid (SAMF) at 0.01% (m/v); and c) non-coated magnetic fluid (NCMF) at 1% (m/v).