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  • 1
    ISSN: 0044-2313
    Keywords: Organolanthanide chemistry ; yttrium ; dysprosium ; holmium ; 2-(dimethylaminomethyl)ferrocenyl compounds ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to Organolanthanide Chemistry. II. On 2-(dimethylaminomethyl)ferrocenyl Compounds of Yttrium, Dysprosium, and HolmiumEarly reports about the ability of the 2-(dimethylaminomethy1)ferrocenyl group to form stable heterobimetallic organolanthanide(III) compounds have been confirmed by the synthesis of the organolanthanide(III) derivatives (C5H5)2Ln(FcN) [Ln = Y (II), Dy (III), Ho (IV)], C5H5Dy(FcN)2 · 2,5 THF (V) und C5H5Ln(FcN)Cl [Ln = Dy (VI), Ho (VII)] from the corresponding cyclopentadienyllanthanide(III) chlorides (C5H5)2LnCl or C5H5LnCl2 resp. and (FcN)Li (I). The products have been characterized by elemental analyses, IR-, 1H-NMR, 13C-NMR and UV/Vis spectra as well as mass spectra and the determination of their effective magnetic moments.
    Notes: Frühere Befunde, wonach 2-(Dimethylaminomethyl)ferrocenyl-Gruppen (FcN) zur Bildung stabiler, heterobimetallischer Organolanthanoid(III)-Verbindungen befähigt sind, wurden durch die Synthese der Organoseltenerd(III)-Derivate (C5H5)2SE(FcN) [SE = Y (II), Dy (III), Ho (IV)], C5H5Dy(FcN)2 · 2,5 THF (V) und C5H5SE(FcN)Cl [SE = Dy (VI), Ho (VII)] aus den betreffenden Cyclopentadienylseltenerd(III)-chloriden (C5H5)2SECl bzw. C5H5SECl2 und (FcN)Li (I) bestätigt. Die erhaltenen Verbindungen wurden durch Elementaranalysen, IR-, 1H-NMR-, 13C-NMR- und UV-Vis-Spektren sowie durch Bestimmung der effektiven magnetischen Momente und die Aufnahme von Massenspektren charakterisiert.
    Additional Material: 5 Tab.
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  • 2
    ISSN: 0044-2313
    Keywords: Transition metal alkyl compounds ; vanadium ; molybdenum ; tungsten ; thorium ; uranium ; 2-(dimethylaminomethyl)ferrocenyl compounds ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Transition Metal Alkyl Compounds. 58 On 2-(Dimethylaminomethyl)ferrocenyl Compounds of Vanadium, Molybdenum, Tungsten, Thorium, and UraniumEarlier results according to which dimethylaminomethylferrocenyl groups (FcN) are able to form stable organometallic chelate compounds were confirmed by synthesis of the heterobimetallic chelate compounds (FcN)2VO · Li(acac) II, (FcN)MoO2(acac) III, (FcN)WOCl3 IV, (FcN)Th(acac)3 V, and (FcN)UO2(acac) VI from the corresponding metal acetylacetonates or oxidchlorides and (FcN)Li I. The new compounds were characterized by elemental analysis, the i.r., 1H-n.m.r., and electron spectra and by their effective magnetic moments.
    Notes: Frühere Befunde, wonach Dimethylaminomethylferrocenyl-Gruppen (FcN) zur Bildung stabiler Organoübergangsmetallchelate befähigt sind, wurden durch die Synthese der heterobimetallischen Chelatkomplexe (FcN)2VO · Li(acac) II, (FcN)MoO2(acac) III, (FcN)WOCl3 IV, (FcN)Th(acac)3 V und (FcN)UO2(acac) VI aus den betreffenden Metalloxidchloriden bzw. -acteylacetonaten und (FcN)Li I bestätigt.  -  Die erhaltenen Verbindungen wurden durch Elementaranalysen, IR-, 1H-NMR- und UV-VIS-Spektren sowie Bestimmung der effektiven magnetischen Momente charakterisiert.
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  • 3
    ISSN: 0044-2313
    Keywords: Organolanthanide chemistry, samarium, yttrium ; 2-(dimethylaminomethyl)ferrocenyl compounds ; heterobimetallic organolanthanide chelate complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contribution to Organolanthanoide Chemistry. III. On 2-(Dimethylaminomethyl)ferrocenyl Compounds of Samarium and YttriumEarlier results, indicating the ability of the bulky 2-(dimethylaminomethyl)ferrocenyl-group (FcN) to form thermocally stable, heterobimetallic organolanthanide compounds, were proved by the synthesis of organo-rare-earth derivatives (C5Me5)2Sm(FcN) (II), (C5H5)Sm(FcN)Cl (III), respectively (C5Me5)Y(FcN)Cl (IV) from the corresponding complex cyclopentadienyl rare-earth chlorides (C5Me5)2SmCl · KCl · THF, (C5H5)SmCl2 · THF and (C5Me5)YCl2 · KCl · 1,8 THF and 2-(dimethylaminomethyl)ferrocenyl lithium (FcN)Li (I) as organylating agent. The synthesized compounds were proved by elementary analysis, IR, 1H, 13C NMR and UV-VIS spectra as well as by measuring the magnetic moments and by mass spectroscopy.
    Notes: Frühere Befunde, wonach die voluminöse 2-(Dimethylaminomethyl)ferrocenyl-Gruppierung (FcN) zur Bildung thermisch stabiler, heterobimetallischer Organolanthanoid(III)-Verbindungen befähigt ist, wurden durch die Darstellung der Organoseltenerd(III)-Derivate (C5Me5)2Sm(FcN) (II), (C5H5)Sm(FcN)Cl (III) und (C5Me5)Y(FcN)Cl (IV) aus den betreffenden komplexen Cyclopentadienyl-Seltenerd(III)-chloriden (C5Me5)2SmCl · KCl · THF, (C5H5)SmCl2 · THF bzw. (C5Me5)YCl2 · KCl · 1,8 THF und 2-(Dimethylaminomethyl)ferrocenyl-Lithium (FcN)Li (I) als Organylierungsmittel bestätigt. Die erhaltenen Verbindungen wurden durch Elementaranalysen, IR-, 1H-NMR-, 13C-NMR- und UV-VIS-Spektren sowie durch die Ermittlung der effektiven magnetischen Momente und die Aufnahme der Massenspektren charakterisiert.
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  • 4
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    Bonn: Institute for the Study of Labor (IZA)
    Publication Date: 2015-05-22
    Description: This paper reports the results of a laboratory experiment on network formation among heterogeneous agents. The experimental design extends the basic Bala-Goyal (2000) model of network formation with decay and two-way flow of benefits by allowing for agents with lower linking costs or higher benefits to others. We consider treatments where agents' types are common knowledge and treatments where agents' types are private information. In all treatments, the (efficient) equilibrium network has a star structure. We find that with homogeneous agents, equilibrium predictions fail completely. In contrast, with heterogeneous agents stars frequently occur, often with the high-value or low-cost agent in the center. Stars are not borne but rather develop: in treatments with a high-value agent, the network's centrality, stability, and efficiency all increase over time. Our results suggest that agents' heterogeneity is a major determinant for the predominance of star-like structures in real-life social networks.
    Keywords: C72 ; C91 ; C92 ; D01 ; D85 ; ddc:330 ; network formation ; stars ; heterogeneity ; laboratory experiments ; Netzwerk ; Soziales Netzwerk ; Test ; Asymmetrische Information ; Theorie
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
    Type: doc-type:workingPaper
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  • 5
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    Amsterdam and Rotterdam: Tinbergen Institute
    Publication Date: 2016-04-21
    Description: The objects for sale in most auctions possess both private and common value elements. This salient feature has not yet been incorporated into a strategic analysis of equilibrium bidding behaviour. This paper reports such an analysis for a stylised model in which bidders receive a private value signal and an independent common value signal. We show that more uncertainty about the common value has a negative effect on efficiency. Information provided by the seller decreases uncertainty, which raises efficiency and seller's revenues. Efficiency and revenues are also higher when more bidders enter the auction.
    Keywords: C72 ; D44 ; ddc:330 ; Auctions ; inefficiencies ; information disclosure ; competition ; Auktionstheorie ; Informationsökonomik ; Wettbewerb ; Theorie
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
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  • 6
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    Milano: Fondazione Eni Enrico Mattei (FEEM)
    Publication Date: 2018-11-15
    Description: This paper reports results from a laboratory experiment on network formation among heterogeneous agents. The experimental design extends the Bala-Goyal (2000) model of network formation with decay and two-way flow of benefits by allowing for agents with lower linking costs or higher benefits to others. Furthermore, agents’ types may be common knowledge or private information. In all treatments, the (efficient) equilibrium network has a “star” structure. With homogeneous agents, equilibrium predictions fail completely. In contrast, with heterogeneous agents stars frequently occur, often with the high-value or low-cost agent in the center. Stars are not born but rather develop: with a high-value agent, the network’s centrality, stability, and efficiency all increase over time. Probit estimations based on best-response behaviour and other-regarding preferences are used to analyze individual linking behavior. Our results suggest that heterogeneity is a major determinant for the predominance of star-like structures in real-life social networks.
    Keywords: C72 ; C92 ; D82 ; D85 ; ddc:330 ; Network Formation ; Experiment ; Heterogeneity ; Private Information ; Netzwerk ; Soziales Netzwerk ; Test ; Asymmetrische Information ; Theorie
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
    Type: doc-type:workingPaper
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