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(Tetracyanonaphthalocyaninato)iron(II) with Isocyanides as Axial Ligands (Tetracyanonaphthalocyaninato)iron(II) [(CN),-2,3-NcFe; 61 is obtained by treating 2,3,6-tricyanonaphthalene (5) with iron(I1) acetate. Compound 5 is synthesized according to the route given in Scheme 1. The mononuclear bisaxial isocyanide complexes (CN)4-2,3-NcFeL2 7-9 with L = tBuNC, cHxNC and AdNC as well as the bridged complex [(CN],-2,3-NcFe(dib)ln (10) are formed as stable compounds by treating 6 with the neat ligands L. The spectroscopic properties of the complexes are described and compared with the analogous compounds (CN)4PcFeLz, 2,3-NcFeLz, 1,2-NcFeL2, and with PcFeL2. The bridged complex [(CN),-2,3-NcFe(dib)In (10) exhibits only poor semiconducting properties as compared to (2,3-NcFe(dib)ln. The oligomer 10 can be doped with iodine, and the resulting product [(CN)4-2,3-NcFe(dib)Il,4]n shows a powder conductivity oRT = 2 x S/cm at room temperature.In (CN)4-2,3-NcFe (6) ist ein schwarzgriines, bei Raumtemperatur stabiles Pulver, das in nichtkoordinierenden organischen Losungsmitteln nahezu unloslich ist. Bei der Synthese von 6 konnen vier Konstitutionsisomere entstehenIbdl.

Als Makrocyclen (Mac) wurden bevorzugt das Phthalocyanin (Pc), substituierte Phthalocyanine, Tetrabenzoporphyrin (TBP) aber auch 1,2-und 2,3-Naphthalocyanin (1,2-und 2,3-Nc) verwendet. Als zentrale Metallatome eignen sich z. B. Eisen, Cobalt oder Ruthenium. Bei Ubergangsmetallen in der Oxidationsstufe +I1 kann z.B. Pyrazin (pyz), s-Tetrazin (tz) oder 1,4-Diisocyanobenzol (dib), bei Metallen in der Oxidationsstufe +I11 kann Cyanid (CN-) oder Thiocyanat (SCN -) als Bruckenligand dienen.Die elektrischen Eigenschaften der genannten Koordinations-

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The tricyanobenzene (III), prepared for the first time in good yield, reacts with Fe(CO)5 to give (V), which may consist of four constitution isomers, which are not separated and assigned.