PhthalocyaninesVersatile Components of Molecular Conductors

Interplay of strongly correlated electrons and localized Ising moments in one dimension

“…The study on EKLM was carried out with in mind the experimental findings of the giant negative magnetoresistance in the one-dimensional (1D) organic solid, TPP[Fe(Pc)(CN) 2 ] 2 9 . This so-called phthalocyanine compound is a quarter-filled π-electronic system which includes a localized Fe d-spin on the same TPP-molecule 10 . The π-electrons have a charge order, which is stabilized by the π-d interaction.…”

Synthesis of Iron(II) Octachlorotetrapyrazinoporphyrazine, Molecular Structure and Optical Properties of the (X−)2FeTPyzPACl8 Dianions with Two Axial Anionic Ligands (X− = CN−, Cl−)

“…The reaction was carried out at 220 o C in argon atmosphere during 1 hour. FeTPyzPACl 8 (1) was washed with acetone and hot o-dichlorobenzene. Composition of compound 1 was determined by elemental analysis which showed a large amount of solvent molecules in the sample (acetylacetone and acetone).…”

“…[6] Metal phthalocyanines as donors can be oxidized by relatively weak oxidants, for example, iodine, to form radical cation compounds possessing semiconducting or quasi-one-dimensional metallic conductivity (in some cases down to 4 K). [7,8] Compounds with ferromagnetic properties were obtained based on tetracyanoethylene and manganese phthalocyanine or substituted naphthalocyanine. [9,10] Compounds based on phthalocyanine anions can also demonstrate promising conducting and magnetic properties.…”

“…[15] Substituted tetrapyrazinoporphyrazines are used in cancer and photodynamic therapy, [32][33][34] as components for capacitors, [35] and their nonlinear properties are analyzed. [29] In this work we developed a simple method to synthesize iron(II) octachlorotetrapyrazinoporphyrazine, FeTPyzPACl 8 (1), bearing eight electron-withdrawing chlorine substituents attached to the electron deficient tetrapyrazinoporphyrazine macrocycle. We found the way to dissolve this porphyrazine by a complex formation reaction with the CN − ligands and prepare single crystals of (PPN …”

Magnetic torque and heat capacity measurements onTPP[Fe(Pc)(CN)2Tajima1, Yoshida2, Matsuda3 et al. 2008Phys. Rev. BSelf Cite290130View full textAdd to dashboardCite

“…9,10 All these salts have a one-dimensional ͓Fe͑Pc͒͑CN͒ 2 ͔ chain but have different crystal structures. 15 Thus, we assume that the magnetic behaviors of these salts are essentially governed by the exchange interaction within the ͓Fe͑Pc͒͑CN͒ 2 ͔ chain. This assumption is consistent with the one-dimensional nature of the system discussed for the heat capacity in Sec.…”