Synthesis, Structure, Spectroscopy, and Magnetism of Unique Propeller-Type Linear Trinuclear CuII Complexes with In-situ Prepared Formamidine Ligands

An unique trinuclear triply bridged Cu(II) compound containing double acetato and single azido bridges: Synthesis, X-ray structure and magnetism of [Cu3(dpyam)2(μ1,1-N3)2(μ-CH3COO- κ-O1)2(μ-CH3COO-κ-O1,O2)2]·2(H2O) (dpyam=di-2-pyridylamine)

“…No half-field signal or other signals typical for trinuclear Cu(II) complexes could be obtained at RT or 77 K. Similar EPR features/signals are also found in other trinuclear complexes [24][25][26][27].…”

Two pyrazolato-bridged, linear trinuclear Cu(II) complexes. Crystal structures and magnetic properties

“…The EPR spectrum of 1 at ambient temperature shows a very broad signal centered around g 0/2.12 and a very weak and broad signal at about g 0/3.5, which appears to be typical for trinuclear copper complexes [14,45]. In liquid nitrogen and in liquid helium the signal at g0/2.12 sharpens and the signal at g 0/3.5 disappears.…”

Cobalt(II) complexes with disubstituted 3-aminopyrazole derivative: Mononuclear Co(II) complex with in situ prepared formamidine ligand

“…All these reactions were carried out in the presence of a small amount of water originating from the crystal hydrates of the metal salts used in the synthesis. Taking into account the coordination requirement of central atom and the intention to see how the absence of water influences the complex formation of aamp with Co(NO 3 ) 2 , we carried out the reaction in the presence of the dehydrating agent CH(OEt) 3 , in a methanolic solution, having in mind that CH(OEt) 3 with amines like aamp may take part in a formamidine bridge formation [17]. In this way we tried to secure the reaction conditions to formation of a compound with a tailored structure, containing -NH-CH@N-group.…”