The Third Oxidation Potentials and the Third Reduction Potentials of Bis (phthalocyaninato) lanthanide Complexes

Harnoode, Chokto; Kitamura, Fusao; Ohsaka, Takeo; Tokuda, Koichi; Iwase, Akio

doi:10.5796/electrochemistry.61.767

Cited by 8 publications

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“…Most of the interesting characteristics of the bis(phthalocyaninato)lanthanide complexes stem from their sandwich-type structure and the interplanar interaction between the π-electron systems of the two Pc rings. Recently we found that they show six one-electron redox-reaction steps corresponding to z ranging from −4 to +2 in o -dichlorobenzene solution . Besides lanthanoids, tin and some actinoids , have been reported to form sandwich-type complexes.…”

Section: Introductionmentioning

confidence: 99%

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Relationship between the Skew Angle and Interplanar Distance in Four Bis(phthalocyaninato)lanthanide(III) Tetrabutylammonium Salts ([NBuⁿ₄][Ln^IIIPc₂]; Ln = Nd, Gd, Ho, Lu)

et al. 1996

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Four crystal structures of the title complexes have been analyzed by X-ray crystallography. 1: C80H68N17Nd, a = 17.0545(6) Å, c = 22.807(3) Å, tetragonal, P4/ncc, Z = 4. 2: C80H68N17Gd, a = 17.399(8) Å, c = 11.377(6) Å, tetragonal, P4212, Z = 2. 3: C80H70N17OHo, a = 18.096(5) Å, c = 11.079(6) Å, tetragonal, P4212, Z = 4. 4: C80H70N17OLu, a = 18.171(3) Å, c = 10.987(4) Å, tetragonal, P4/nmm, Z = 2. The [LnIIIPc2]- and [NBu n 4]+ ions in each crystal stack alternately in a column along the 4-fold axis. The Ln(III) cation of each [LnIIIPc2]- is eight-coordinated by two phthalocyanato dianions (Pc). The interplanar distances between the two Pc rings have a linear relationship to the ionic radii of the central Ln(III) cations. The skew angles between the two Pc rings are 6.2, 34.4, 43.2, and 45.0° for the Nd, Gd, Ho, and Lu complexes, respectively. The skew angle seems to depend on the strength of the π−π interaction between the two Pc rings.

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Section: Introductionmentioning

confidence: 99%

“…Recently we found that they show six one-electron redox-reaction steps corresponding to z ranging from -4 to +2 in o-dichlorobenzene solution. 11 Besides lanthanoids, tin 12 and some actinoids 13,14 have been reported to form sandwich-type complexes.…”

Section: Introductionmentioning

confidence: 99%

Relationship between the Skew Angle and Interplanar Distance in Four Bis(phthalocyaninato)lanthanide(III) Tetrabutylammonium Salts ([NBuⁿ₄][Ln^IIIPc₂]; Ln = Nd, Gd, Ho, Lu)

et al. 1996

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Comparative Electrochemical Study of Unsubstituted and Substituted Bis(phthalocyaninato) Rare Earth(III) Complexes

et al. 2004

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The electrochemistry of homoleptic substituted phthalocyaninato rare earth double-decker complexes M(TBPc) 2 and M(OOPc) 2 [M = Y, La...Lu except Pm; H 2 TBPc = 3(4),12(13),21(22),30(31)-tetra-tert-butylphthalocyanine, H 2 OOPc = 3,4,12,13,21,22,30,31-octakis(octyloxy)phthalocyanine] has been comparatively studied by cyclic voltammetry (CV) and differential pulse voltammetry (DPV) in CH 2 Cl 2 containing 0.1 M tetra-n-butylammonium perchlorate (TBAP). Two quasi-reversible one-electron oxidations and three or four quasi-reversible one-electron reductions have been revealed for these neutral double-deckers of two series of substituted complexes, respectively. For comparison, unsubstituted bis(phthalocyaninato) rare earth analogues M(Pc) 2 (M = Y, La...Lu except Pm; H 2 Pc = phthalocyanine) have also been electrochemically investigated. Two quasi-reversible one-electron oxidations and up to five quasi-reversible one-electron reductions have been revealed for these neutral double-decker compounds. The three bis(phthalocy-

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Electrochemistry of Heteroleptic Tris(phthalocyaninato) Rare Earth(III) Complexes

Zhu

Pan

et al. 2004

Eur J Inorg Chem

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The electrochemical characteristics of a series of heteroleptic tris(phthalocyaninato) complexes with identical rare earths or mixed rare earths (Pc)M(OOPc)M(OOPc) [M = Eu...Lu, Y; H 2 Pc = unsubstituted phthalocyanine, H 2 (OOPc) = 3,4,12,13,21,22,30,31-octakis(octyloxy)phthalocyanine] and (Pc)Eu(OOPc)Er(OOPc) have been recorded and studied comparatively by cyclic voltammetry (CV) and differential pulse voltammetry (DPV) in CH 2 Cl 2 containing 0.1 M tetrabutylammonium perchlorate (TBAP). Up to five quasi-reversible one-electron oxidations and four one-electron reductions have been revealed. The half-wave potentials of the first, second and fifth oxidations depend on the size of the metal center, but the fifth changes in the opposite direction to that of the first two. Moreover, the difference in redox potentials of the first oxidation and first reduction for

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The Third Oxidation Potentials and the Third Reduction Potentials of Bis (phthalocyaninato) lanthanide Complexes

Cited by 8 publications

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Relationship between the Skew Angle and Interplanar Distance in Four Bis(phthalocyaninato)lanthanide(III) Tetrabutylammonium Salts ([NBuⁿ₄][Ln^IIIPc₂]; Ln = Nd, Gd, Ho, Lu)

Relationship between the Skew Angle and Interplanar Distance in Four Bis(phthalocyaninato)lanthanide(III) Tetrabutylammonium Salts ([NBuⁿ₄][Ln^IIIPc₂]; Ln = Nd, Gd, Ho, Lu)

Comparative Electrochemical Study of Unsubstituted and Substituted Bis(phthalocyaninato) Rare Earth(III) Complexes

Electrochemistry of Heteroleptic Tris(phthalocyaninato) Rare Earth(III) Complexes

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The Third Oxidation Potentials and the Third Reduction Potentials of Bis (phthalocyaninato) lanthanide Complexes

Cited by 8 publications

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Relationship between the Skew Angle and Interplanar Distance in Four Bis(phthalocyaninato)lanthanide(III) Tetrabutylammonium Salts ([NBun4][LnIIIPc2]; Ln = Nd, Gd, Ho, Lu)

Relationship between the Skew Angle and Interplanar Distance in Four Bis(phthalocyaninato)lanthanide(III) Tetrabutylammonium Salts ([NBun4][LnIIIPc2]; Ln = Nd, Gd, Ho, Lu)

Comparative Electrochemical Study of Unsubstituted and Substituted Bis(phthalocyaninato) Rare Earth(III) Complexes

Electrochemistry of Heteroleptic Tris(phthalocyaninato) Rare Earth(III) Complexes

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Relationship between the Skew Angle and Interplanar Distance in Four Bis(phthalocyaninato)lanthanide(III) Tetrabutylammonium Salts ([NBuⁿ₄][Ln^IIIPc₂]; Ln = Nd, Gd, Ho, Lu)

Relationship between the Skew Angle and Interplanar Distance in Four Bis(phthalocyaninato)lanthanide(III) Tetrabutylammonium Salts ([NBuⁿ₄][Ln^IIIPc₂]; Ln = Nd, Gd, Ho, Lu)