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Saeid Amani Komaei

Saeid Amani Komaei

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId:
Faculty: Science
Address: Arak University
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Research

Title
Drastic Effect of Lattice Propionitrile Molecules on the SpinTransition Temperature of a 2,2′-Dipyridylamino/s-triazine-Based Iron(II) Complex
Type
JournalPaper
Keywords
Spin Transition Temperature
Year
2014
Journal Inorganic Chemistry
DOI
Researchers Nassim Nasirinia ، Saeid Amani Komaei

Abstract

ABSTRACT: Reaction of iron(II) selenocyanate (obtained from Fe(ClO4)2 and KNCSe) with 2-(N,N-bis(2-pyridyl)amino)-4,6-bis(pentafluorophenoxy)-(1,3,5)triazine (L1F) in propionitrile produces the compound [Fe(L1F)2(NCSe)2]·2CH3CH2CN (1NCSe·2PrCN), which shows spin-crossover (SCO) properties characterized by a T1/2 of 283 K and a ΔT80 (i.e., temperature range within which 80% of the transition considered occurs) of about 65 K. Upon air exposure, 1NCSe·2PrCN gradually converts to a new SCO species that exhibits different properties, as reflected by T1/2 = 220 K and ΔT80 = 70 K. Various characterization techniques, namely, IR spectroscopy, thermogravimetric analysis, and thermodiffractometric studies, reveal that the new phase is obtained through the loss of the lattice propionitrile molecules within several days upon air exposure or several hours upon heating above 390 K.