Electronic Properties and Structure of Polymeric Organic Semiconductors

Dulov, A. A.

doi:10.1070/rc1966v035n10abeh001538

Cited by 19 publications

(1 citation statement)

References 5 publications

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“…General Procedure for Preparation of Five -coordinate Complexes: J, 4,5,6,12,13,14,15,16 To a suspension of 0.1 mmol of I (for 3, 4, S, 6) or 2 (for 12,13,14,IS,16) in 5 ml of methanol, 15 ml of a methanolic solution containing 0.15 mmol of the appropriate catechol with the stoichiometric amount of sodium hydroxyde were added. The mixture was stirred at room temperature for 5 h. The light brown precipitate was filtered and recrystallized from benzene-petrol ether to give yellow brown or brown microcrystals.…”

Section: Solvents and Chemicalsmentioning

confidence: 99%

ChemInform Abstract: IRIDIUM AND RHODIUM NITROSYL O‐CATECHOLATO METAL COMPLEXES

Ghedini¹,

Denti²,

Dolcetti³

1978

Chemischer Informationsdienst

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Abstract. The synthesisand characterization of several novel tetra and pentacoordinate catecholato metal nitrosyl complexes of the type Ir(NO)(1,2-02C.H3-3 or 4-R)-P(C.H,)3): 3-R = isoC 3H,; 4-R = COOH, H, CH 3, terC.H.; and M(NO)(1,2-02C.H3-4-R)(P(CoH,)3),: M = Ir and Rh; R = N0 2 , CHO, COOCH,; M = Rh; R = H; are reported together with their IR spectra. Two different classesof cathecolato complexes are obtained, tetracoordinate and pentacoordinate. The pentacoordinate complexes achieve tetracoordination, in solution, by spontaneous and reversible release of a phosphine molecule.The separation of the crystallinespecies seems to be determined either by the electron withdrawing or releasing power of the cathecolato ring substituents rather than by the solubility of the single species in our preparative conditions. The possibility for the pentacoordinate complexes to have a packed trigonal bipyramidgeometry with axial bent nitrosyl NO-and axial equatorial catechol ligand is supported by the easy phosphine dissociation to form the tetracoordinate, which has been observed both in solution and in field desorption mass spectra measurements. For the tetracoordinate complexes a square planar geometry with linear nitrosyl, NO+, is proposed.

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Section: Solvents and Chemicalsmentioning

confidence: 99%

ChemInform Abstract: IRIDIUM AND RHODIUM NITROSYL O‐CATECHOLATO METAL COMPLEXES

Ghedini¹,

Denti²,

Dolcetti³

1978

Chemischer Informationsdienst

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Struktur und elektrische Leitfähigkeit von polymeren organischen Halbleitern

Härtel

Koßmehl

Manecke

et al. 1973

Angew. Makromol. Chem.

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I n der folgenden zusammenfassenden Darstellung wird uber niedermolekulare und polymere organische Halbleiter berichtet, die in letzter Zeit in unserem Institut synthetisiert wurden.Bei den Polyenarylenen bzw. -heteroarylenen werden spezifische elektrische Leitfiihigkeiten bis zu 82980K = 9,0 . 10-552-1 . cm--l bei einer thermischen Aktivie- SUMMARY:I n this review article we want to give information about low molecular and polymer organic semiconductors, which were recently synthesized in our institute.Specific electric conductivities up to (T2980K = 9.0 . 10-552-1 . cm-1 and thermic activation energies of E = 0.30 eV of polyenearylenes, respectively -heteroarylenes were measured.Polyazomethines have a maximum (T2980K = 3.3 . 10-952-1 . cm-1 and E = 0.35 eV. Polymers with indophenine units have conductivities up to (T2980K = 1.1 . 10-452-1 * cm-l and E = 0.39 eV. A maximum of (T2980K = 5.0 . 10-252-1 . cm-1 and E = 0.05 eV was found for bis-(l.2-dicyanoethylenedithiolo)-metal salts.* Vortrag anlaBlich der Tagung der GDCh-Fachgruppe ,,Makromolekulare Chemie" L2-l . cm-l and E 2 0.5 eV were obtained by the polymerization of succinonitrile.All the investigated substances show an electronic conductivity. The existence of an ionic conductivity could, in all cases, be excluded by using direct current measurements over a long period of time.

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Iridium and Rhodium Nitrosyl o‐Catecholato Metal Complexes

Ghedini¹,

Denti²,

Dolcetti³

1976

Israel Journal of Chemistry

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The synthesis and characterization of several novel tetra and pentacoordinate catecholato metal nitrosyl complexes of the type Ir(NO)(1,2‐O2C6H3‐3 or 4‐R)‐P(C6H5)3): 3‐R = iso C3H7; 4‐R = COOH, H, CH3, terC4H9; and M(NO)(1,2‐O2C6H3‐4‐R)(P(C6H5)3): M = Ir and Rh; R = NO2, CHO, COOCH3; M = Rh; R = H; are reported together with their IR spectra. Two different classes of cathecolato complexes are obtained, tetracoordinate and pentacoordinate. The pentacoordinate complexes achieve tetracoordination, in solution, by spontaneous and reversible release of a phosphine molecule. The separation of the crystalline species seems to be determined either by the electron withdrawing or releasing power of the cathecolato ring substituents rather than by the solubility of the single species in our preparative conditions. The possibility for the pentacoordinate complexes to have a packed trigonal bipyramid geometry with axial bent nitrosyl NO− and axial equatorial catechol ligand is supported by the easy phosphine dissociation to form the tetracoordinate, which has been observed both in solution and in field desorption mass spectra measurements. For the tetracoordinate complexes a square planar geometry with linear nitrosyl, NO+, is proposed.

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Electronic Properties and Structure of Polymeric Organic Semiconductors

Cited by 19 publications

References 5 publications

ChemInform Abstract: IRIDIUM AND RHODIUM NITROSYL O‐CATECHOLATO METAL COMPLEXES

ChemInform Abstract: IRIDIUM AND RHODIUM NITROSYL O‐CATECHOLATO METAL COMPLEXES

Struktur und elektrische Leitfähigkeit von polymeren organischen Halbleitern

Iridium and Rhodium Nitrosyl o‐Catecholato Metal Complexes

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