Studien über die Komplexbildung von Uranylverbindungen

Müller, Arno

doi:10.1002/zaac.19181030103

Cited by 5 publications

(3 citation statements)

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“…The same is true for the Bi III azides, although Schulz et al very recently reported on the synthesis of Bi(N 3 ) 3 . [35] Moreover, the structures of MeBi(N 3 ) 2 [34] and Me 2 BiN 3 [36] have been known for years. We treated 3 and 4 with an excess of Me 3 SiN 3 in the absence of any additional solvents.…”

Section: Resultssupporting

confidence: 61%

Syntheses and X‐ray Crystal Structures of Organoantimony Diazides

Lyhs

Bläser

Wölper

et al. 2011

Chemistry A European J

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Antimony(III) complexes of the general type LSbF(2) (3: L(1) =[tBuC(NiPr)(2)]; 4: L(2) =[tBuC(NDipp)(2) , Dipp=2,6-iPr(2)C(6)H(3)) and LSb(N(3))(2) (6: L(1); 7: L(2)) were prepared in high yields and characterized by elemental analyses, NMR and IR spectroscopy and single-crystal X-ray diffraction. Moreover, the solid-state structures of [L(2)SbF(2)][L(2)Li] (5), [L(2) AlH(2)] (1), and [L'H][L'K(thf)(3)] (2; L'=HC(NDipp)(2)) are described, in which the Li (5) and K atoms (2) adopt rather unusual coordination modes.

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Section: Resultssupporting

confidence: 61%

Syntheses and X‐ray Crystal Structures of Organoantimony Diazides

Lyhs

Bläser

Wölper

et al. 2011

Chemistry A European J

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“…very recently reported on the synthesis of Bi(N 3 ) 3 35. Moreover, the structures of MeBi(N 3 ) 2 34 and Me 2 BiN 3 36 have been known for years.…”

Section: Resultsmentioning

confidence: 99%

Synthesis, Electronic Properties, and Reactivity of Phospholes and 1,1′‐Biphospholes Bearing 2‐ or 3‐Thienyl C‐Substituents

Fadhel

Szieberth

Deborde

et al. 2009

Chemistry A European J

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Two series of phospholes and 1,1'-biphospholes bearing either 2- or 3-thienyl substituents at the C atoms are prepared by using the Fagan-Nugent route. Their optical (UV/Vis absorption, fluorescence spectra) and electrochemical properties are systematically evaluated. Of particular interest, the first ever reported 3-thienyl-substituted phospholes exhibit higher LUMO levels than their 2-thienyl analogues, and show accordingly different physical properties. This study also reveals that the 1,1'-biphospholes exhibit sigma-pi conjugation. The phosphole and 1,1'-biphosphole derivatives bearing 3-thienyl substituents are characterized by X-ray diffraction study. The structure-property relationship established following the experimental data are fully supported by theoretical studies including time-dependent(TD)-DFT spectra. A photocyclization reaction performed on the thioxo- and oxophospholes having 3-thienyl substituents affords a novel ring-fused phosphole-thiophene derivative, which was characterized by an X-ray diffraction study. The structure and electronic properties of this novel dithienophosphole are discussed based on experimental and theoretical data.

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“…Uranyl Nitrate and Emymes.--The UO2 ++ cation has a great tendency to form complex compounds with a large number of organic substances (6)(7)(8).…”

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confidence: 99%

Regulatory Mechanisms of Cellular Respiration

Barrón

Muntz

Gasvoda

1948

Journal of General Physiology

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The large number of inhibitors of cellular respiration hitherto described have been reported to act by inhibiting the activity of enzyme systems. They do so (1) by combining with the activating protein, either through some groups essential for activity (for example, the -S H groups), through denaturation of the molecule, or by combination on the side chains where substrates or prosthetic groups form the protein-substrate complex (structural inhibitors); (2) by combining with the prosthetic groups of enzymes (diphosphothiamine, pyridoxal, pantothenic acid, etc.); (3) by combining with the series of oxidation reduction systems (pyridine nucleotides, flavins, cytochromes) which transfer electrons from oxidizable substrate to molecular oxygen. Besides this direct action on the components of enzyme systems, cellular respiration may be affected by alteration of the varied mechanisms which regulate in the living cells the rate and the direction of enzymatic reactions. One of these regulating mechanisms is the state of the cellular membrane. It is generally agreed that the cell membrane is a lipoid-protein system possessing varying degrees of permeability where penetration occurs by passage through the pores of the membrane or through solution in the lipoid portion. Any alteration of the solubility coefficient in the lipoid phase or changes of the pore size will bring forth alterations in the rate of passage of substrates, and as a consequence alterations in the metabolsim of the cell. We present in this paper experiments on the inhibition of cellular oxidations produced by uranyl nitrate, which have been interpreted as being due to combination of uranium with the protein layer of the cell membrane, bringing thus an increased impermeability to the passage of certain oxidizable substrates. EXPERIMENTALThe yeast cells used in these experiments were brewers' yeast from Keely Brewing Company, Chicago, and bakers' yeast from Fleischmann. The first fermented

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Studien über die Komplexbildung von Uranylverbindungen

Cited by 5 publications

References 0 publications

Syntheses and X‐ray Crystal Structures of Organoantimony Diazides

Syntheses and X‐ray Crystal Structures of Organoantimony Diazides

Synthesis, Electronic Properties, and Reactivity of Phospholes and 1,1′‐Biphospholes Bearing 2‐ or 3‐Thienyl C‐Substituents

Regulatory Mechanisms of Cellular Respiration

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