Slow Magnetic Relaxation in Silver(II) Macrocyclic Systems
Joan Serra, Mercè Font‐Bardía, Albert Escuer, Júlia Mayans
Abstract
High Resolution Image Download MS PowerPoint Slide The spin–lattice relaxation time has been studied trough alternating-current susceptometry and ultralow-frequency Raman spectroscopy in a family of silver(II)-derived molecular systems with spin 1 / 2 and formulas [Ag II ( m -CTH)(NO 3 ) 2 ] ( 1 ) and [Ag II ( m -CTH)(ClO 4 ) 2 ] ( 2 ), where CTH = meso -5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane. The combination of both techniques demonstrates the occurrence of slow spin magnetic relaxation induced by spin–phonon interaction. The magnetic behavior of these silver(II)-derived systems opens the door to a new cation in the scarce family of S = 1 / 2 systems with slow relaxation of magnetization.