The synthesis of novel transition metal complexes containing amidinato ligands /
Amidine and amidinato ligands have been shown to display rich and diverse chemistry with metals of the transition series, particularly with regard to the formation of dinuclear "paddle-wheel" compounds. Until recently, however, the first row of the transition series contained noticeably f...
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| Format: | Thesis Book |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1995.
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| Subjects: | |
| Online Access: | http://proxy.library.tamu.edu/login?url=http://proquest.umi.com/pqdweb?did=742744921&sid=1&Fmt=2&clientId=2945&RQT=309&VName=PQD |
| Summary: | Amidine and amidinato ligands have been shown to display rich and diverse chemistry with metals of the transition series, particularly with regard to the formation of dinuclear "paddle-wheel" compounds. Until recently, however, the first row of the transition series contained noticeably fewer such compounds. The development of a synthetic route to a paddle- wheel compound of dicobalt is presented here, leaving only Ti and Mn as first-row transition metals for which such compounds are unknown. Also presented are the syntheses and structural characterizations of several other compounds encountered en route, showing how this chemistry unfolded while illustrating the flexibility and adaptability of amidine and arnidinato ligands in forming different types of transition metal species. The development of this chemistry, which focuses largely on complexes of the first-row transition metals, begins with the MC'2(amidine)2 compounds, in which a transition metal in the +2 oxidation state is bound by two chlorides and by two monodentate amidine ligands. This is followed by an investigation of the strong propensity of fonnamidinato lignds to form tris-chelated species of the type M(172-DArF)3. The structures of five such species are examined in detail. Five dinuclear compounds are then presented, two of which represent only the second and third examples of tris-bridged species with amidinato ligands, and another of which is the long-sought paddle-wheel compound C02(DPhF)4. The syntheses and structures of all compounds presented will be discussed. |
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| Item Description: | Vita. "Major Subject: Chemistry". |
| Physical Description: | xi, 100 leaves : illustrations ; 28 cm. Issued also on microfiche from University Microfilms Inc. |
| Bibliography: | Includes bibliographical references. |