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- Title
- The electronic structures of dimolybdenum compounds; detailed electronic absorption and electrochemical studies of dimolybdenum BAII complexes.
- Creator
- Shih, Keng-Yu., Florida Atlantic University, Baird, Donald M., Charles E. Schmidt College of Science, Department of Chemistry and Biochemistry
- Abstract/Description
-
The complexes Mo2(OAc)3(BAII), where BAII is 1,3-bis(arylimino)isoindoline, have been synthesized. A detailed interpretation of their 1H-NMR spectra has been made. The structure of the bis(pyridylimino)isoindoline derivative has been determined by X-ray analysis to facilitate the assignment of the resonance lines in the spectra. It has been found that there are trends in energies and intensities of the delta-->delta* transition in these compounds. Electron withdrawing substituents on the...
Show moreThe complexes Mo2(OAc)3(BAII), where BAII is 1,3-bis(arylimino)isoindoline, have been synthesized. A detailed interpretation of their 1H-NMR spectra has been made. The structure of the bis(pyridylimino)isoindoline derivative has been determined by X-ray analysis to facilitate the assignment of the resonance lines in the spectra. It has been found that there are trends in energies and intensities of the delta-->delta* transition in these compounds. Electron withdrawing substituents on the aromatic nitrogen heterocycles in BAII shift the delta-->delta* transition to a lower energy and a higher intensity as compared to electron releasing substituents. These trends suggest that mixing of M-->L charge transfer transitions with the delta-->delta* transitions is occurring in these compounds which is consistent with the results of electrochemical trends in oxidation potentials. The complexes which are hardest to oxidize in general have the lowest delta-->delta* transition.
Show less - Date Issued
- 1989
- PURL
- http://purl.flvc.org/fcla/dt/14516
- Subject Headings
- Chemistry, Inorganic
- Format
- Document (PDF)
- Title
- The synthesis of a new polymeric ligand poly[5-(1,3-bis-(2'-pyridylimino)isoindolyloxy)ethylene] (PBPIIIOE).
- Creator
- Jiang, Yi, Florida Atlantic University, Carraher, Charles E., Baird, Donald M., Charles E. Schmidt College of Science, Department of Chemistry and Biochemistry
- Abstract/Description
-
A new polymeric ligand, poly[5-(1,3-bis-(2'-pyridylimino) isoindolyloxy)ethylene], was synthesized. At same time, 1,3-bis-(2 '-pyridylimino)-5-hexadecanyloxyisoindoline was also synthesized. These two products were characterized with fourier transform infrared spectrometry, ultraviolet spectrometry, mass spectral analysis and elemental analysis. Their complexes of Cu+2 were prepared.
- Date Issued
- 2000
- PURL
- http://purl.flvc.org/fcla/dt/12663
- Subject Headings
- Ligands, Organometallic polymers
- Format
- Document (PDF)
- Title
- The synthesis of bis(dimolybdenum)-1,3,5,7-tetrakis(2-pyridylimino) benzodipyrrole as a precursor for an inorganic, quadruple bond containing polymer.
- Creator
- Kavanaugh, David John, Florida Atlantic University, Baird, Donald M., Charles E. Schmidt College of Science, Department of Chemistry and Biochemistry
- Abstract/Description
-
The planar, dinuclear, tridentate ligands, 1,3,5,7-tetrakis(2-pyridylimino)benzodipyrrole (TAII) and 1,3,5,7-tetrakis(4,6-dimethyl-2-pyridylimino)benzodipyrrole (DiMeTAII) were synthesized and characterized as were all intermediates characterized by both infrared and 1H-NMR spectra. Evidence is presented for the formation of Mo4(OAc)6-(DiMeTAII) (I), the dinuclear analog of Mo2(OAc)3-BAII using UV/Vis to show the delta--->delta* transition typical of the quadruple bond and for the...
Show moreThe planar, dinuclear, tridentate ligands, 1,3,5,7-tetrakis(2-pyridylimino)benzodipyrrole (TAII) and 1,3,5,7-tetrakis(4,6-dimethyl-2-pyridylimino)benzodipyrrole (DiMeTAII) were synthesized and characterized as were all intermediates characterized by both infrared and 1H-NMR spectra. Evidence is presented for the formation of Mo4(OAc)6-(DiMeTAII) (I), the dinuclear analog of Mo2(OAc)3-BAII using UV/Vis to show the delta--->delta* transition typical of the quadruple bond and for the determination of percent molybdenum which is consistent with the proposed structure. A review of recent studies into the field of quadruply bonded metal containing polymers will be discussed along with application of compound (I) in this field.
Show less - Date Issued
- 1993
- PURL
- http://purl.flvc.org/fcla/dt/14950
- Subject Headings
- Ligands (Biochemistry), Metal-metal bonds, Diffusion bonding (Metals)
- Format
- Document (PDF)
- Title
- Synthesis of new materials containing metal-metal quadruple bonds: Complexes containing 2,2';6'2''-terpyridine, 4'-phenyl-2,2';6'2''-terpyridine, 2,3,5,6-tetrakis(alpha-pryidyl)pyrazine, and 1,3-bis(4-methylimino)isoindoline.
- Creator
- Hu, Chiwei, Florida Atlantic University, Baird, Donald M., Charles E. Schmidt College of Science, Department of Chemistry and Biochemistry
- Abstract/Description
-
The presence of multiply bonded dimetal units in materials offers opportunities for tuning properties of solids. Materials containing molybdenum-molybdenum quadruple bonds have recently begun being reported. This thesis reports the products of the reactions of dimethyl sulfide (DMS), acetonitrile (ACN) and acetate complexes, Mo2CI4(DMS)4, Mo2(ACN)10ABF4, and Mo2(0Ac)4 with 2,2';6,2"-terpyridine, 4'-phenyl 2,2';6,2"-terpyridine, 2,3,5,6-tetrakis (alpha-pyridyl) pyrazine and 1,3-bis(4...
Show moreThe presence of multiply bonded dimetal units in materials offers opportunities for tuning properties of solids. Materials containing molybdenum-molybdenum quadruple bonds have recently begun being reported. This thesis reports the products of the reactions of dimethyl sulfide (DMS), acetonitrile (ACN) and acetate complexes, Mo2CI4(DMS)4, Mo2(ACN)10ABF4, and Mo2(0Ac)4 with 2,2';6,2"-terpyridine, 4'-phenyl 2,2';6,2"-terpyridine, 2,3,5,6-tetrakis (alpha-pyridyl) pyrazine and 1,3-bis(4-methylimino)isoindoline. Among these ligands, 2,3,5,6-tetrakis (alpha-pyridyl) pyrazine may lead to linear arrays of metal-metal bonds as well as other ordered structures. 1H-NMR, electronic absorption, and infrared data will be quoted to support any structural assignments.
Show less - Date Issued
- 1995
- PURL
- http://purl.flvc.org/fcla/dt/15212
- Subject Headings
- Molybdenum compounds, Metal-metal bonds, Electronic structure
- Format
- Document (PDF)
