A Triangular Mixed-Valence Cu+1.5Cu+1.5Cu+1 Cluster Supported by 2-Quinolyl-2,2'-dipyrrylmethane as a Tripodal Ligand: Synthesis, Structure and Properties.
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Accession number;99A0308737
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| Title;A Triangular Mixed-Valence Cu+1.5Cu+1.5Cu+1 Cluster Supported by 2-Quinolyl-2,2'-dipyrrylmethane as a Tripodal Ligand: Synthesis, Structure and Properties. |
| Author;
SETSUNE J
(Kobe Univ., Kobe)
FUKAYA T
(Kobe Univ., Kobe)
YOKOYAMA T
(Kobe Univ., Kobe)
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Journal Title;Abstr Symp Organomet Chem Jpn
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Journal Code:L0853A
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ISSN:
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VOL.45th;NO.;PAGE.88-89(1998)
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| Figure&Table&Reference; |
| Pub. Country;Japan |
| Language;English |
| Abstract;2-Quinolyl-2,2'-(5,5'-dicarboethoxydipyrryl)methane (LH2) gave a stable trinuclear mixed-valence complex (L2Cu3-A) in which a triangle [Cu3]+4 cluster with Cu-Cu distances of 2.574(3),2.596(2), and 2.597(2).ANGS. is sandwiched between two tripodal ligands. A seven-line ESR spectrum (g=2.141,ACu=53G in benzene-CH2Cl2 solution) indicates that an unpaired electron is delocalized over the two structurally equivalent Cu sites ligated by two anionic pyrrole nitrogens and two carbonyl oxygens. An isomer (L2Cu3-B) as a byproduct shows a four-line ESR signal (g=2.140,ACu=87G). This is consistent with the structure in which one tripodal ligand in the arrangement of L2Cu3-A undergoes one third turn with respect to the other ligand. (author abst.) |
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