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Two polyferrocenylsilanes (PFSs) 1 and 2 with aniline and carbazolyl as side chains have been prepared by treating silyl-chloride functionalized PFS (PFS-Cl) with hydroxyl-ended aniline and carbazole compounds, respectively, and characterized by NMR, FT-IR, elemental analysis (EA), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and cyclic voltammetry (CV). Both of them could be oxidized by iodine and 2,3-dichloro-5,6-dicyanoquinone (DDQ) to form complexes. PFS 1 could be oxidized by tetracyanoethylene (TCNE) too. The complexes are characterized by FT-IR, EA, Iron-57 Mossbauer spectroscopy. All of them are partially oxidized by the oxidants and both FeII and FeIII coexist in the complexes. Magnetic property measurement by superconducting quantum interference device (SQUID) shows their paramagnetic properties with somewhat antiferromagnetic interaction. Results show that the joint type between PFS backbone and the electron-rich side groups has less direct effect on the exhibition of ferromagnetic interaction in their complexes.

A new intercalation compound,Fe0.81PS3(4-aminopyridineH)0.38, issynthesized by the direct reaction of4-aminopyridine with layered FePS3 inthe presence of acetic acid.From the XRD results it was found that there aretwo phases (Phase I and Phase II)in this intercalation compound and that4-aminopyridines as the guests adopt twodifferent orientations between theinterlayer region of the host (FePS3).In one of them with the latticeexpansion (Δd) of 6.0 A thering plane of the guest is perpendicular to thelayer and in the other with Δd of3.4 A the ring plane of the guest is parallel tothe layer of the host. The IR spectraimply that the inserted guests take theprotonated form to maintain the charge balanceof the intercalation compound.Magnetic measurements indicate thatFe0.81PS3(4-aminopyridineH)0.38 exhibitsparamagnetism in the range of measurementtemperature (1.8 ∼: 300 K),where the magnetic behavior is wellin agreement with the Curie-Weiss Lawabove 55 K.

Five inorganic-organic intercalation compounds (I–V) with N-methylstilbazoliumderivatives (i–v) inserted into the interlayer space of FePS3, were synthesized,and characterized with X-ray diffraction (XRD), elemental analysis and infraredspectroscopy. The XRD results indicate that in all these intercalation compounds themolecular ring planes of the guests are almost perpendicular to the layers of thehost FePS3. From the lattice expansion of intercalates IV and V itcan be inferred that a dipolar interaction may exist between the guests in theinterlayer space of the host FePS3. Their magnetic properties were measuredwith the SQUID technique. All these intercalation compounds show similar magneticproperties. At the Neel temperature of about 80 K they exhibit the antiferromagnetictransition, although the lattice spacing and the electron-accepting ability of theguest are different. It may imply that the lattice spacing expansion and an electron-effectof the guests have not altered their antiferromagnetic property of these FePS3intercalation compounds.

Transition to a ferromagnetic long range ordered state was found at 0.60 K in the orthorhombic β-phase crystal of p-nitrophenyl nitronyl nitroxide (or 2-(4′-nitrophenyl)-4, 4, 5, 5-tetramethyl-4, 5-dihydro-lH-imidazol-1-oxyl-3-N-oxide in the IUPAC nomenclature). This finding provides the first example of an organic bulk ferromagnet consisting of light elements and having a definite molecular and crystal structure.

FOR most charge transfer complexes, the ground-state can be described chiefly by a non-bonding structure DA, as the contribution of the dative structure D+A− is rather small, where D is the electron donor and A is the electron acceptor. However, it has been shown1–3 for the complexes formed between aromatic diamines and substituted p- and o-benzoquinones that the dative or ionic state is the lowest one. These complexes may be regarded as salts, and can be prepared from salts, D+X− and M+A−, by a double decomposition reaction, where X− and M+ stand for inorganic ions.