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Title: New materials based on metal complexes of bis(arylimino)isoindoline.
Creator: Rosenberg, Jay Merlin., Florida Atlantic University, Baird, Donald M.
Abstract/Description: Molecular architecture has been used to develop new materials with our knowledge of Bis(arylimino)isoindoline (BAII). Ni(BAII)2,\ Ni(NBAII)2 and Cu(NBAII)(OAc) complexes were prepared and studied using their Crystal packing diagrams and data in order to evaluate $\pi$-overlapping. It is believed that $\pi$-overlapping will occur in complexes with mono BAII substituted complexes and not di-substituted. The first steps have been made in the development of a polymeric BAII complex with the...
Show moreMolecular architecture has been used to develop new materials with our knowledge of Bis(arylimino)isoindoline (BAII). Ni(BAII)2,\ Ni(NBAII)2 and Cu(NBAII)(OAc) complexes were prepared and studied using their Crystal packing diagrams and data in order to evaluate $\pi$-overlapping. It is believed that $\pi$-overlapping will occur in complexes with mono BAII substituted complexes and not di-substituted. The first steps have been made in the development of a polymeric BAII complex with the production of an oligomeric BAII (GBAII). The GBAII complex was analysis using a molecular device approach with the use of NMR instrumentation.
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Date Issued: 1998
PURL: http://purl.flvc.org/fcla/dt/15553
Subject Headings: Polymers, Materials, Chemistry, Ligands
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: Electronic structures of some copper(II)-imidazole complexes.
Creator: Williams, Chamindra S., Florida Atlantic University, Perumareddi, Jayarama R.
Abstract/Description: Electronic-structure studies of Tetrakis(imidazole)sulphatocopper(II) - Cu(C3H4N2)4SO4 and Tetrakis(imidazole)diperchloratocopper(II) - Cu(C3H4N 2)4(ClO4)2 have been carried out by analysis of electronic spectra, magnetic properties and ESR spectra. Solution spectra of both systems in the visible and UV range as well as unpolarised single-crystal spectrum of Cu(Im)4SO4 in the visible have been recorded. Both ligand-field (LF) and charge-transfer (L --> M) bands have been identified and...
Show moreElectronic-structure studies of Tetrakis(imidazole)sulphatocopper(II) - Cu(C3H4N2)4SO4 and Tetrakis(imidazole)diperchloratocopper(II) - Cu(C3H4N 2)4(ClO4)2 have been carried out by analysis of electronic spectra, magnetic properties and ESR spectra. Solution spectra of both systems in the visible and UV range as well as unpolarised single-crystal spectrum of Cu(Im)4SO4 in the visible have been recorded. Both ligand-field (LF) and charge-transfer (L --> M) bands have been identified and assigned, with the exception of the lowest energy LF band. The Angular Overlap Model has been used to calculate the LF band-maxima and compare with the observed band-maxima The ground-state energy-term for both Cu(Im)4SO4 and Cu(Im)4(ClO4)2 has been established with the use of ESR data to be 2B1g. Magnetic moment for the complexes have been obtained from precise magnetic susceptibility measurements with temperature variation and satisfactorily compared with the calculated values.
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Date Issued: 2000
PURL: http://purl.flvc.org/fcla/dt/15775
Subject Headings: Copper compounds, Ligand field theory
Format: Document (PDF)

Title: Synthesis and coordination chemistry of the 1,3-bis(2-pyridylimino)benz(f)isoindoline ligand.
Creator: Maehlmann, William Pierre, Florida Atlantic University, Baird, Donald M.
Abstract/Description: Transition metal complexes of the mononucleating 1,3-bis(pyridylimino)isoindoline ligand (BAII) have been useful as redox catalysts and as models for naturally occurring metal centers. The redox properties of binuclear 1,3,5,7-tetra(pyridylimino)benzodipyrrole (TAII) complexes have also been investigated. Attempts to prepare 1,3,6,8-tetra(2-(4-methylpyridyl)imino)naphthodipyrrole (NTAII) using calcium chloride catalysis and solid fusion will be discussed. Divalent Cu, Ni, Zn, and Pd complexes...
Show moreTransition metal complexes of the mononucleating 1,3-bis(pyridylimino)isoindoline ligand (BAII) have been useful as redox catalysts and as models for naturally occurring metal centers. The redox properties of binuclear 1,3,5,7-tetra(pyridylimino)benzodipyrrole (TAII) complexes have also been investigated. Attempts to prepare 1,3,6,8-tetra(2-(4-methylpyridyl)imino)naphthodipyrrole (NTAII) using calcium chloride catalysis and solid fusion will be discussed. Divalent Cu, Ni, Zn, and Pd complexes of the mononucleating 1,3-bis(pyridylimino)benz(f)isoindoline ligand (NBAII) were prepared and the crystal structure of Cu(II)OAc(NBAII) is discussed. It is believed that the dimolybdenum NBAII complex has also been prepared. The NBAII complexes were characterized using NMR, IR, and UV-visible spectroscopy.
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Date Issued: 1994
PURL: http://purl.flvc.org/fcla/dt/15082
Subject Headings: Ligands--Synthesis, Coordination compounds
Format: Document (PDF)

Title: Dependence of spectroscopic and electrochemical properties of dimolybdenum multiimine complexes on ligand structure.
Creator: Yang, Fengli, Florida Atlantic University, Baird, Donald M.
Abstract/Description: The complexes MoX4(Multiimine)2, where X = Cl, Br, I and Multiimine = dimethyl-bipyridine, bipyridine, phenanthroline, bipyrazine, bipyridazine and bipyrimidine, have been prepared. The product complexes apparently contain non-bridged quadruple molybdenum-molybdenum bonds. Each molybdenum is coordinated to a bidentate diimine and two halogen atoms. An electronic absorption study reveals an important trend that the intensity of the delta-->delta* transition increases with decreasing energy....
Show moreThe complexes MoX4(Multiimine)2, where X = Cl, Br, I and Multiimine = dimethyl-bipyridine, bipyridine, phenanthroline, bipyrazine, bipyridazine and bipyrimidine, have been prepared. The product complexes apparently contain non-bridged quadruple molybdenum-molybdenum bonds. Each molybdenum is coordinated to a bidentate diimine and two halogen atoms. An electronic absorption study reveals an important trend that the intensity of the delta-->delta* transition increases with decreasing energy. This shows the energy of this band is determined by mixing of this transition with a metal-to-ligand charge transfer transition. An EEC type mechanism is proposed for the redox behavior of these compounds on the basis of an electrochemical study and some consistent results are obtained by correlating the oxidation potentials with the delta-->delta* transition energies. Also, fairly good correlations of both the delta-->delta* transition energies and the oxidation potentials with pk(a) of L are obtained.
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Date Issued: 1991
PURL: http://purl.flvc.org/fcla/dt/14724
Subject Headings: Molybdenum, Diffusion bonding (Metals), Ligand binding (Biochemistry)
Format: Document (PDF)

Title: WEAK FIELD COUPLING SCHEMES FOR TETRAGONAL COMPLEXES --D('2) AND D('8) ELECTRONIC CONFIGURATIONS.
Creator: COLLINS, JOHN ANTHONY., Florida Atlantic University
Abstract/Description: In the well-known weak field sequence of perturbations, which is called the {L, S, J} representation, one considers the spin.-orbit perturbation immediately after interelectronic repulsions. If fhe spin-orbit effect is not large, as is the case for 3d^n systems, it is useful to obtain energy levels in a representation, {L, S, X}, with a sequence of perturbations in which the ligand field potential precedes the spin-orbit perturbation. For tetragonal ligand fields the {L,S,X} representation...
Show moreIn the well-known weak field sequence of perturbations, which is called the {L, S, J} representation, one considers the spin.-orbit perturbation immediately after interelectronic repulsions. If fhe spin-orbit effect is not large, as is the case for 3d^n systems, it is useful to obtain energy levels in a representation, {L, S, X}, with a sequence of perturbations in which the ligand field potential precedes the spin-orbit perturbation. For tetragonal ligand fields the {L,S,X} representation will give one coupling scheme if the cubic orientation is not maintained. If we go through cubic parentage, however, we have two additional coupling schemes depending on whether the spin-orbit perturbation is applied immediately after cubic or after cubic and axial potentials. We have devised these three coupling schemes by deriving the wave functions and energy matrices for the case of d^2 and d^8 electronic configurations. The purities of eigenfunctions for both the cubic and tetragonal cases have been obtained in the {L, S, X} and {L, S, J} representations. We find that the eigenfunctions are considerably purer in the new {L, S, X} representations even for large values of the spin-orbit constant.
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Date Issued: 1976
PURL: http://purl.flvc.org/fcla/dt/13787
Subject Headings: Ligand field theory, Crystal field theory
Format: Document (PDF)

Title: The jj-coupling scheme by tensor operators and a thorough interpretation of the spectra of some nickel(II) complexes.
Creator: Alves, Gelio., Florida Atlantic University, Perumareddi, Jayarama R.
Abstract/Description: The ligand field theory of complexes has been completely developed and the energy matrix elements for complexes in various geometries in different coupling schemes have been worked in considerable detail. However for many coupling schemes the computing of energy matrix elements is a tedious and laborious process. In the first part of my thesis we present a solution to the Weak-Field II problem using ladder operators and tensor operators. We used the Weak-Field II as an example to stress the...
Show moreThe ligand field theory of complexes has been completely developed and the energy matrix elements for complexes in various geometries in different coupling schemes have been worked in considerable detail. However for many coupling schemes the computing of energy matrix elements is a tedious and laborious process. In the first part of my thesis we present a solution to the Weak-Field II problem using ladder operators and tensor operators. We used the Weak-Field II as an example to stress the complexity of computing energy matrix elements using ladder operators versus the simplicity of calculating matrix elements with tensor operators. Also the Weak-Field II was used as a model example hoping to be able to accomplish the same with the jj-II coupling scheme. In the last part of my thesis we present a derivation of simplifying expressions for the energy matrix elements for the d 2 complex in the jj-II coupling scheme. It is worth mentioning that the expressions derived can be applied to complexes other than octahedral and further they can be generalized for complexes with n-electrons in the valence shell. Finally, we present a thorough analysis of the electronic spectra of some Nickel(II) complexes.
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Date Issued: 2005
PURL: http://purl.flvc.org/fcla/dt/13256
Subject Headings: Ligand field theory, Quantum chemistry, Stereochemistry
Format: Document (PDF)

Title: Electronic Spectra of Quadrate Chromium (III) Complexes.
Creator: Lowry, Robert K. Jr., Perumareddi, Jayarama R., Florida Atlantic University
Abstract/Description: Ligand field theory of d^3 transition metal ions in cubic and quadrate fields is briefly summarized, along with the features of the predicted spectra. Diffuse reflectance spectra of a variety of quadrate chromium(III) complexes are measured with special emphasis on uncovering the component structures of the spin-forbidden transitions. Energy level assignments are made for components of both spin-allowed and spin-forbidden bands by fitting of the calculated and observed energy levels. Electron...
Show moreLigand field theory of d^3 transition metal ions in cubic and quadrate fields is briefly summarized, along with the features of the predicted spectra. Diffuse reflectance spectra of a variety of quadrate chromium(III) complexes are measured with special emphasis on uncovering the component structures of the spin-forbidden transitions. Energy level assignments are made for components of both spin-allowed and spin-forbidden bands by fitting of the calculated and observed energy levels. Electron correlation and ligand field parameters are derived by the fitting procedure, and the usefulness of the repulsion parameters Band C in bonding considerations is discussed. Results reveal the need for certain refinements of the present state of ligand field theory. The need for improved experimental techniques to provide more precise and abundant spectral data is evident. When more data is available it will be possible to continue the extensions of the theory of ligand fields to s ystems of lower symmetries.
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Date Issued: 1969
PURL: http://purl.flvc.org/fau/fd/FA00000791
Subject Headings: Chromium--Spectra, Ligand field theory
Format: Document (PDF)

Title: Synthesis and characterization of ruthenium-containing polymers.
Creator: Zhang, Qingmao, Florida Atlantic University, Carraher, Charles E.
Abstract/Description: Ruthenium-containing polymers derived from dichloro-bis(2,2-bipyridine)-ruthenium and selected dithiol or diamines have been synthesized. These polymeric products were characterized using FTIR, ultraviolet spectroscopy, light scattering photometry and mass spectral analysis. Thermal degradation studies of these products are presented.
Date Issued: 1993
PURL: http://purl.flvc.org/fcla/dt/14952
Subject Headings: Ruthenium compounds, Ligands, Organometallic polymers, Mass spectrometry
Format: Document (PDF)

Title: Chitin Microparticles (CMPs) Induce M1 Macrophage Activation via Intracellular TLR2 Signaling Mechanism.
Creator: Davis, Spring, Shibata, Yoshimi, Florida Atlantic University, Charles E. Schmidt College of Medicine, Department of Biological Sciences
Abstract/Description: Chitin Microparticles (CMPs, 1-10um), a special form of the ubiquitous and nontoxic polysaccharide Chitin (GlcNAc), is capable of inducing a switch in macrophages from the wound-healing M2 phenotype to the classically activated pro-inflammatory M1 phenotype; which has therapeutic implications in allergy and cancer. We hypothesized that TLR2 forms a complex with CMPs and Chitin-Binding Proteins (CBPs) at the surface of peritoneal macrophages and remains with that complex after internalization...
Show moreChitin Microparticles (CMPs, 1-10um), a special form of the ubiquitous and nontoxic polysaccharide Chitin (GlcNAc), is capable of inducing a switch in macrophages from the wound-healing M2 phenotype to the classically activated pro-inflammatory M1 phenotype; which has therapeutic implications in allergy and cancer. We hypothesized that TLR2 forms a complex with CMPs and Chitin-Binding Proteins (CBPs) at the surface of peritoneal macrophages and remains with that complex after internalization to initiate downstream signaling events, leading to the production of the M1 cytokine, TNFalpha. Our results from experiments performed in RAW 264.7 cells show that TLR2 and TLR1, but not TLR6, are associated with the CMP binding fraction, and that both TLR1 and TLR2 might be important for M1 activation as a result of CMP phagocytosis. This project sheds light on CMP as a potential therapeutic agent and provides more evidence for a phagocytosis-dependent TLR2 signaling pathway.
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Date Issued: 2016
PURL: http://purl.flvc.org/fau/fd/FA00004762, http://purl.flvc.org/fau/fd/FA00004762
Subject Headings: Biopharmaceutics., Macrophages., Cell receptors., Ligands (Biochemistry), High performance processors.
Format: Document (PDF)

Title: The electronic spectra and electronic energy levels of tetragonal chromium(III) complexes.
Creator: Schatschneider, Bohdan Hindulak., Florida Atlantic University, Perumareddi, Jayarama R.
Abstract/Description: We have studied the electronic spectra of tetragonal chromium (III) complexes namely trans-[Cr(NH3)4(CN)2]ClO4, trans-[Cr(en)2(CN)2]ClO4, and trans-[Cr(cyclam)(CN) 2]ClO4. These spectra have been analyzed by Gaussian analysis to locate the band maxima of the tetragonal components. The band maxima are then fitted with the tetragonal energy matrices of d3 configuration with full configuration interaction, neglecting spin-orbit interaction. The Dq, Dt, and Ds ligand field and the B and C...
Show moreWe have studied the electronic spectra of tetragonal chromium (III) complexes namely trans-[Cr(NH3)4(CN)2]ClO4, trans-[Cr(en)2(CN)2]ClO4, and trans-[Cr(cyclam)(CN) 2]ClO4. These spectra have been analyzed by Gaussian analysis to locate the band maxima of the tetragonal components. The band maxima are then fitted with the tetragonal energy matrices of d3 configuration with full configuration interaction, neglecting spin-orbit interaction. The Dq, Dt, and Ds ligand field and the B and C electron correlation parameters have been extracted from the fitting procedure. The parameters have been analyzed to understand the bonding of these complexes. We have also uncovered the low intensity absorption doublet bands and a high intensity charge transfer band of trans-[Cr(en)2(CN)2]ClO4 which occur around 15,000cm-1 and 49,000cm-1, respectively.
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Date Issued: 2001
PURL: http://purl.flvc.org/fcla/dt/12756
Subject Headings: Chromium--Spectra, Ligand field theory, Atomic spectra
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.
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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: Marine sponge Bis(Indole) alkaloids that displace ligand binding to α1 adrenergic receptors.
Creator: Phife, D. W., Ramos, R. A., Feng, M., King, I., Gunasekera, Sarath P., Wright, Amy E., Patel, Mahesh, Pachter, J. A., Coval, S. J.
Date Issued: 1996
PURL: http://purl.flvc.org/FCLA/DT/3331919
Subject Headings: Sponges, Indole alkaloids, Adrenergic alpha blockers, Alpha adrenoceptors, Ligand binding (Biochemistry)
Format: Document (PDF)

FAU Theses and Dissertations (12)	+ -
HBOI Faculty Contributions (1)	+ -

Ligand field theory (5)	+ -
Ligands (3)	+ -
Chromium--Spectra (2)	+ -
Diffusion bonding (Metals) (2)	+ -
Ligand binding (Biochemistry) (2)	+ -

Ligands (Biochemistry) (2)	+ -
Organometallic polymers (2)	+ -
Adrenergic alpha blockers (1)	+ -
Alpha adrenoceptors (1)	+ -
Atomic spectra (1)	+ -
Biopharmaceutics. (1)	+ -
Cell receptors. (1)	+ -
Chemistry (1)	+ -
Coordination compounds (1)	+ -
Copper compounds (1)	+ -
Crystal field theory (1)	+ -
High performance processors. (1)	+ -
Indole alkaloids (1)	+ -
Ligands--Synthesis (1)	+ -
Macrophages. (1)	+ -
Mass spectrometry (1)	+ -
Materials (1)	+ -
Metal-metal bonds (1)	+ -
Molybdenum (1)	+ -
Polymers (1)	+ -
Quantum chemistry (1)	+ -
Ruthenium compounds (1)	+ -
Sponges (1)	+ -
Stereochemistry (1)	+ -

Electronic Thesis or Dissertation (12)	+ -
article (1)	+ -

Florida Atlantic University (12)	+ -
Baird, Donald M. (5)	+ -
Perumareddi, Jayarama R. (4)	+ -
Carraher, Charles E. (2)	+ -
Charles E. Schmidt College of Science (2)	+ -

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