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Relationship between the Skew Angle and Interplanar Distance in Four Bis(phthalocyaninato)lanthanide(III) Tetrabutylammonium Salts ([NBun4][LnIIIPc2]
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文摘
Four crystal structures of the title complexes havebeen 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[NBun4]+ions in each crystal stack alternately in a column along the 4-foldaxis. The Ln(III) cation of each[LnIIIPc2]-iseight-coordinated by two phthalocyanato dianions (Pc). Theinterplanar distances between the two Pc rings havea linear relationship to the ionic radii of the central Ln(III)cations. The skew angles between the two Pc ringsare 6.2, 34.4, 43.2, and 45.0 for the Nd, Gd, Ho, and Lu complexes,respectively. The skew angle seems todepend on the strength of the - interaction between the two Pcrings.

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