NDLI: Investigation of anion-dependence in the spin-state switching properties of $[(H_{2}bip)_{2}Fe(6-Mebpy)]X

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Ni, Zhaoping Shores, Matthew P. Fiedler, Stephanie R.
Description	Author Affiliation: Ni Z ( Department of Chemistry, Colorado State University, Fort Collins, Colorado, USA.)
Abstract	We report the syntheses, characterisations and magnetic properties of salts of the heteroleptic Fe(II) complex $[(H_{2}bip)_{2}Fe(6-Mebpy)]X_{2}$ (X = Br (1), $BPh_{4}$ (2), $H_{2}bip$ = 2,2′-bi-1,4,5,6-tetrahydropyrimidine , 6-Mebpy = 6-methyl-2,2′-bipyridine ). The ditopic $H_{2}bip$ ligand serves as an anion binding group while 6-Mebpy is intended to adjust the complex ligand field. Thermally induced spin-crossover properties are observed in the solid state and solution, and are heavily influenced by the nature of the anion. Anion-triggered spin-state switching is observed for the heteroleptic complex in dichloromethane solution at 193 K, above background processes of ligand dissociation and rearrangement. Although substitution of 6-Mebpy appears to increase the ligand field encountered by the Fe(II) ion, salt 2 responds to bromide at a significantly lower temperature than the parent homoleptic complex salt $[Fe(H_{2}bip)_{3}](BPh_{4})_{2}.$
ISSN	14779226
Issue Number	4
Journal	Dalton Trans.
Volume Number	40
e-ISSN	13645447
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2011-01-28
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Chemistry
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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