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Multiheteromacrocycles that complex metal ions. Sixth progress report, 1 May 1979-30 April 1980. [Hemispherands; spherands]

Description: Objective is to design synthesize, and evaluate cyclic and polycyclic host organic compounds for their abilities to complex and lipophilize guest metal ions, their complexes, and their clusters. Host organic compounds consist of strategically placed solvating, coordinating, and ion-pairing sites tied together by covalent bonds through hydrocarbon units around cavities shaped to be occupied by guest metal ions or by metal ions plus their ligands. Specificity in complexation is sought by matching… more
Date: January 15, 1980
Creator: Cram, D. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Vapor phase spectroscopy of complex lanthanide halide--aluminum halide molecular species

Description: The absorption spectrum of ErCl/sub 3/ (AlCl/sub 3/)/sub x/ vapor complex was measured and analyzed using the Judd-Ofelt theory. Structural correlations in other AlCl/sub 3/ vapor complexes and radiation emission are discussed. Fluorescence of TbCl/sub 3/ (AlCl/sub 3/)/sub x/ vapor complex and in the NdCl/sub 3/ (AlCl/sub 3/)/sub x/ system were studied. (DLC)
Date: January 1, 1977
Creator: Carnall, W T; Hessler, J P; Williams, C W & Hoekstra, H R
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Pentamethylcyclopentadienyl and bis(trimethylsilyl)amido complexes of the di- and trivalent lanthanides

Description: The reaction of the divalent iodides YbI/sub 2/ and EuI/sub 2/ with NaN(SiMe/sub 3/)/sub 2/ has provided pentane-soluble, monomeric derivatives of the divalent lanthanides. These compounds are isolated as the solvated species Eu(N(SiMe/sub 3/)/sub 2/)/sub 2/L/sub 2/ (L = thf or 1,2-dme), Yb(N(SiMe/sub 3/)/sub 2/)/sub 2/(thf)/sub 1/ /sub 5/ and Yb(N(SiMe/sub 3/)/sub 2/)/sub 2/L/sub 2/ (L = 1,2-dme or OEt/sub 2/), or as the sodium salts NaM(N(SiMe/sub 3/)/sub 2/)/sub 3/ (M = Eu or Yb). The pentam… more
Date: March 1, 1982
Creator: Tilley, T. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Electron transfer reactions of metal complexes in solution

Description: A few representative electron-transfer reactions are selected and their kinetic parameters compared with the predictions of activated complex models. Since Taube has presented an elegant treatment of intramolecular electron-transfer reactions, emphasis is on bimolecular reactions. The latter electron-transfer reactions are more complicated to treat theoretically since the geometries of their activated complexes are not as well known as for the intramolecular case. In addition in biomolecular re… more
Date: January 1, 1977
Creator: Sutin, N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Excited-state proton-transfer kinetics in 1-naphthol, 1-naphthol-sulfonates, and organometallic complexes

Description: The dissociation of 1-naphthol in aqueous solution occurs so rapidly that the fluorescence from the neutral form, ROH, has been previously described as completely extinguished or hardly noticeable. Apparently nearly all of the fluorescence originates from the naphtholate ion. This paper reports on the proton-transfer characteristics of a series of 1-naphthol compounds, and also reports preliminary data on excited-state proton transfer in an organometallic complex of ruthenium.
Date: July 1, 1980
Creator: Shapiro, S. L.; Winn, K. R. & Clark, J. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Palladium Catalyzed Coupling Reactions: Mechanism of Reductive Elimination. Progress Report, October 1, 1979-September 30, 1980. [Ethane Elimination]

Description: The 1,1-reductive elimination of ethane from three cis-bis(phosphine)-dimethylpalladium complexes, L/sub 2/Pd(CH/sub 3/)/sub 2/ (L = PPh/sub 3/, PPh/sub 2/,CH/sub 3/ and L/sub 2/ = Ph/sub 2/PCH/sub 2/CH/sub 2/PPh/sub 2/), and three trans analogs (L = PPh/sub 3/, PPh/sub 2/CH/sub 3/ and L/sub 2/ = 2,11-bis(diphenylphosphinomethyl)benzo(c)phenanthrene (TRANSPHOS)) was carried out. The three cis complexes underwent reductive elimination in the presence of coordinating solvents (DMSO, DMF, and THF)… more
Date: September 1, 1980
Creator: Stille, J. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ferrocyanide-containing waste tanks: Ferrocyanide chemistry and reactivity

Description: The complexing constant for hexacyano-iron complexes, both Fe(2) and Fe(3), are exceptionally large. The derived transition metal salts or double salts containing alkali metal ions are only slightly soluble. The various nickel compounds examined in this study, i.e., those predicted to have been formed in the Hanford waste scavenging program, are typical examples. In spite of their relative stability towards most reagents under ambient conditions, they are all thermodynamically unstable towards … more
Date: September 1, 1991
Creator: Scheele, R. D.; Burger, L. L.; Tingey, J. M.; Bryan, S. A.; Borsheim, G. L.; Simpson, B. C. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Gelled polymer systems for permeability modification in petroleum reservoirs

Description: The research program described in this report was conducted to improve the performance and predictability of in situ gelation processes designed to increase volumetric sweep efficiency of fluid displacement processes. A principal objective of this research was to develop procedures for design and evaluation of permeability modification processes. Research was conducted in three broad areas: (1) Physical and Chemical Characterization of Gelling Systems (2) In situ Gelation and (3) Mathematical M… more
Date: September 1, 1991
Creator: Willhite, G.P.; Green, D.W.; Thiele, J.L.; McCool, C.S. & Mertes, K.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Secondary recovery of plutonium and americium from process waste streams by solvent extraction

Description: A solvent extraction process is being evaluated for the secondary recovery of plutonium and americium from Rocky Flats waste streams. The bidentate organophosphorus compounds dihexyl-N,N-diethylcarbamylmethylene phosphonate and its dibutyl analogue have been shown to be selective extractants for the actinides from solutions of nitric acid. The results from laboratory test runs in which the organophosphorus extractants were used for processing secondary waste solutions will be presented. Solvent… more
Date: January 16, 1978
Creator: Hagan, P. G. & Navratil, J. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Chemical Processing Technology Quarterly Progress Report, October-December 1961

Description: The ICPP processed Al fuel, prtncipally of the MTR-ETR type, durtng this quarter. Newly designed and installed processing equipment exhibited excellent operating performance. This included direct-air-pulsed extraction, stripping and scrub columns, and a cascade-controlled continuous evaporator in first cycle product concentration service. Aqueous zirconium fuel processing studies continued with the objective of adapting the hydrofluoric acid process to continuous dissolution-complexing to incre… more
Date: March 28, 1962
Creator: Bower, J. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Three year progress report and renewal request

Description: A review of research accomplisments during the contract period is presented. Reported projects include: (1) metals as radiation sensitizers of spores; (2) studies on transforming and calf thymus DNA; (3) pulse radiolysis studies on DNA components; (4) studies of metal complexes of DNA compounds; and (5) dosimetry of the pulsed electron beam. (ACR)
Date: August 1, 1980
Creator: Powers, E. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Vectorially photoinduced electron-transfer processes across water-in-oil interfaces of microemulsions

Description: Artificial photosynthetic devices are potential fuel sources. The basic idea in the design of such devices is a photosensitized electron-transfer that yields chemical species capable of reducing and oxidizing water to hydrogen and oxygen. A fundamental difficulty in effecting this transfer is the thermodynamically favored back reactions of the intermediary redox species. An interfacial model composed of a water-in-oil microemulsion is suggested to provide the separation of these redox species, … more
Date: July 1, 1980
Creator: Willner, I.; Otvos, J. W. & Calvin, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Harvard-MIT research program in short-lived radiopharmaceuticals

Description: This report presents research on radiopharmaceuticals. The following topics are discussed: antibody labeling with positron-emitting radionuclides; antibody modification for radioimmune imaging; labeling antibodies; evaluation of technetium acetlyacetonates as potential cerebral blood flow agents; and studies in technetium chemistry. (CBS)
Date: January 1, 1991
Creator: Adelstein, S.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Nuclear medicine program progress report for quarter ending December 31, 1991

Description: This report presents information on (1) a new improved synthesis of carrier-free rhenium-188-labeled Re(V) dimercaptosuccinic acid (DMSA) complex as a potential therapeutic agent for treatment of thyroid medullary carcinoma; and (2) the synthesis and evaluation of a series of iodine-125-labeled analogues of altanserine for imaging of serotonin receptors.
Date: April 1, 1992
Creator: Knapp, F. F., Jr.; Ambrose, K. R.; Callahan, A. P.; McPherson, D. W.; Mirzadeh, S.; Srivastava, P. C. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Electrochemical photovoltaic cells/stabilization and optimization of II-VI semiconductors. First technical progress report, 15 April 1980-30 June 1980

Description: The overall goal of this program is to provide the basis for designing a practical electrochemical solar cell based on the II-VI compound semiconductors. Emphasis is on developing new electrolyte redox systems and electrode surface modifications which will stabilize the II-VI compounds against photodissolution without seriously degrading the long-term solar response. The bulk electrode material properties are also being optimized to provide the maximum solar conversion efficiency and greatest i… more
Date: July 20, 1980
Creator: Noufi, R.; Tench, D. & Warren, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Tank farm surveillance and waste status report for June 1991

Description: This report is Westinghouse Hanford Company's official inventory for radioactive stored in underground tanks in the 200 Areas at the Hanford Site. Data that depict the status of stored radioactive waste and tank vessel integrity are contained within the report. The intent of the report is to provide data on each of the existing 177 large underground waste storage tanks and 49 smaller catch tanks and special surveillance facilities, and to provide supplemental information regarding tank surveill… more
Date: September 1, 1991
Creator: Hanlon, B. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Chemical activation of molecules by metals: Experimental studies of electron distributions and bonding

Description: The formal relationship between measured molecular ionization energies and thermodynamic bond dissociation energies has been developed into a single equation which unifies the treatment of covalent bonds, ionic bonds, and partially ionic bonds. This relationship has been used to clarify the fundamental thermodynamic information relating to metal-hydrogen, metal-alkyl, and metal-metal bond energies. We have been able to obtain a direct observation and measurement of the stabilization energy prov… more
Date: October 1991
Creator: Lichtenberger, Dennis L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Catalytic hydrogenation of carbon monoxide

Description: This project is focused on developing strategies to accomplish the reduction and hydrogenation of carbon monoxide to produce organic oxygenates at mild conditions. Our approaches to this issue are based on the recognition that rhodium macrocycles have unusually favorable thermodynamic values for producing a series of intermediate implicated in the catalytic hydrogenation of CO. Observations of metalloformyl complexes produced by reactions of H{sub 2} and CO, and reductive coupling of CO to form… more
Date: December 1, 1992
Creator: Wayland, B.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radiation Laboratory, University of Notre Dame. Quarterly report, July 1, 1977--September 30, 1977. [Short summaries of progress in 27 projects]

Description: Status of the following investigations is given: effect of molecular geometry on the electron affinity of H/sub 2/O; effect of non-spherically symmetric exchange potential in energy transfer and CIDEP; fragmentation patterns in the radiolysis of normal alkanes; properties of solvated electrons; temperature dependence of electron localization and impurity trapping in methanol and propanol; field-dependent electron mobility; aluminium cluster and organoaluminum systems; collision-induced atomic d… more
Date: October 13, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development and radiotherapeutic application of /sup 211/At-labeled radiopharmaceuticals. Progress report, March 1, 1981-February 28, 1982

Description: This project is concerned with developing the potential of alpha-emitting radionuclides as agents for radiotherapy. Alpha-emitters seem ideally suited for his application because their high linear energy transfer and short range permit the deposition of considerable energy in a very small volume of tissue. Unlike the beta particles of /sup 131/I which have a range of about 1 to 2 mm in tissue, 5 to 7 MeV alpha particles would traverse only a few cell diameters. Among the available alpha-emitter… more
Date: January 1, 1981
Creator: Adelstein, S.J.; Zalutsky, M. & Bloomer, W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ozone mass transfer and kinetics experiments

Description: Experiments were conducted at the Hanford Site to determine the most efficient pH and temperature levels for the destruction of complexants in Hanford high-level defense waste. These complexants enhance migration of radionuclides in the soil and inhibit the growth of crystals in the evaporator-crystallizer. Ozone mass transfer and kinetics tests have been outlined for the determination of critical mass transfer and kinetics parameters of the ozone-complexant reaction.
Date: December 1981
Creator: Bollyky, L. Joseph & Beary, M. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Implementation of the GAUSSIAN 78 programs on the NYU VAX/11-780: a probe into basis set and correlation effects on the structure of molecular complexes. [Complexes of p- and m-hydroxylaniline with formamidinium cation]

Description: The program package is used in a theoretical study of molecular complexes that serve as models of drug receptor interactions. The complexes are of para-hydroxyaniline and meta-hydroxyaniline with formamidinium cation. Results indicate that the description of the nature of interaction obtained at the STO-3G SCF level does not change when the basis set is extended to the 4-31G level or when correlation effects are included to second order in a Moeller-Plesset formulation. 5 figures, 4 tables. (DL… more
Date: April 1, 1980
Creator: Topiol, S; Moskowitz, J W; Osman, R & Weinstein, H
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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