Direct two-step spin-crossover through [HS–HS]⋯[LS–LS] at the plateau in dinuclear diiron(ii) complex [{Fe(NCBH3)(4phpy)}2(μ-bpypz)2]

Abstract

The variable temperature magnetic susceptibility, X-ray crystallography, and IR and Raman spectra of a new dinuclear complex [{Fe^II(NCBH₃)(4-phpy)}₂(μ-bpypz)₂] demonstrated the first two-step spin-crossover associated with a 1 ∶ 1 mixture of high-spin pair [HS–HS] and low-spin pair [LS–LS] at the plateau.