The synthesis and properties of some new metallodibenzotetraaza[14]annulenes.
| Main Author: | |
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| Other Authors: | , |
| Format: | Thesis Book |
| Language: | English |
| Published: |
[College Station, Tex.] :
Bobsein,
1978.
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| Subjects: | |
| Online Access: | Link to ProQuest copy Link to OAKTrust copy |
| Abstract: | Several new metallodibenzotetraaza[14]annulenes have been prepared that exhibit unique coordination chemistry. The ligands utilized in these new complexes are 1,8-dihydrodibenzo(b,i)(1,4,8,11)tetraaza[14]-annulene (C₁₈H₁₆N₄ or H₂TAA) and 1,8-dihydro-5,7,12,14-tetramethyl-dibenzo(b,i)(1,4,8,11)tetraaza[14]annulene(C₂₂H₂₄N₄ or H₂TMTAA). Properties of some of these new compounds have been studied. Bimetallic dibenzotetraaza[14]annulene complexes of rhenium have been prepared by the reaction of stoichiometric quantities of Re₂(CO)₁₀ and the ligand in refluxing decalin. These compounds, [Re(CO)₃]₂TAA and [Re(CO)₃]₂TMTAA, were purified via column chromatography. X-ray diffraction studies on [Re(CO)₃]₂TAA show that the tricarbonyl rhenium (I) moieties are on opposite faces of the TAA ligand. The metal-metal interatomic distance is 3.345 Å, and the TAA macrocycle is highly distorted from planarity. Preliminary x-ray results on a [Re(CO)₃]₂TMTAA crystal show that the tricarbonyl rhenium (I) moieties reside on the same side of the TMTAA ligand. The Re-Re interatomic distance is approximately 4.11 Å. ... |
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| Item Description: | "Major subject: Chemistry." Vita. |
| Physical Description: | xv, 171 leaves : graphs ; 29 cm |
| Bibliography: | Includes bibliographical references (leaves 148-159). |