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  • LUNAR AND PLANETARY EXPLORATION  (4)
  • Dimesityliron  (3)
  • 1
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    Laser Ar-39-Ar-40 study of Apollo 17 basalts (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Three Apollo 17 basalts were studied by the laser Ar-39-Ar-40 method. The 70215 basalt has a normal well-behaved Ar-39-Ar-40 release pattern; the 70017 basalt has a disturbed release pattern which indicates a limited intermediate maximum age followed by a broad low-age region; and the 75035 basalt has a pattern initially similar to 70017 that is followed by a high-temperature maximum age. The laser study shows that all mineral systems in 70215 have small and uniform temperature losses, while the laser-determined ages for 70017 and 75035 are, apparently, primarily controlled by the minerals containing mesostasis inclusions. It is possible that the drop in ages observed by the conventional Ar-39-Ar-40 method was due not only to recoil of Ar-39 during neutron irradiation but also to gas loss from some minerals. It is suggested that the plagioclases are the best minerals to use for a reliable age.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar Science Conference; Mar 14, 1977 - Mar 18, 1977; Houston, TX
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Laser /39/Ar-/40/Ar dating of two clasts from consortium breccia 73215 (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A laser Ar-39-Ar-40 study of the components of an ANT-suite anorthositic gabbro and a black aphanite from a consortium breccia is reported. A wide range of K-Ar ages is found for the plagioclase in the anorthositic gabbro; at the centers of the largest grains is material showing the greatest age (older than 4.11 billion years) while the youngest material (3.81-3.88 billion years) is found near the grain margins. Partial outgassing of the clasts upon incorporation into the breccia could account for the age patterns. The black aphanite clast appears to be cogenetic with the aphanite that forms the breccia matrix. The time of crystallization of a lunar granite has also been measured by the laser technique.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar and Planetary Science Conference; Mar 13, 1978 - Mar 17, 1978; Houston, TX
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Laser probe /Ar-39/-/Ar-40/ dating of materials from consortium breccia 73215 (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The unique capacity of the laser-probe (Ar-39)-(Ar-40) method to determine ages of constituents in a rock sample which are only of the order of 100 microns apart has been applied to measure ages of the different constituents of consortium breccia 73215. Evidence is given that the age of the melt-derived ground mass, 4.01 + or - 0.05 billion years, has no chronological significance. Instead, the best estimate for the age of the breccia-forming event, about 3.90 billion years, comes from the study of two clasts only a few hundred micrometers in size. The interpretation of this age as the age of the breccia-forming event is also supported by the studies of other consortium members and suggests a reinterpretation of the ages of most of the other Apollo 17 highland breccias.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar Science Conference; Mar 14, 1977 - Mar 18, 1977; Houston, TX
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Helium, neon, and argon on sunlit and shaded surfaces of lunar rock 12054 (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar Science Conference; Mar 14, 1977 - Mar 18, 1977; Houston, TX
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
    Electronic Resource
    Electronic Resource
    Zur Chemie des Dimesityleisens. VIII. Lösungsverhalten von Tetramesityldieisen und die Kristallstruktur eines Dimethoxyethan-Addukts (1996)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 756-758 
    Details
    ISSN: 0044-2313
    Keywords: Dimesityliron ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chemistry of Dimesityl Iron. VIII Solution Behaviour of Tetramesityldiiron and Crystal Structure of Dimesityl(dimethoxyethane)ironThe dimer dimesityliron yields in polar solvents solvated monomers. The adduct with dimethoxyethane was isolated and characterized by X-ray structure determination.
    Notes: Während Dimesityleisen in unpolaren Lösungsmitteln dimer vorliegt, spaltet es in stärker polaren Lösungsmitteln in solvatisierte Monomere auf. Mit Dimethoxyethan wurde ein Addukt isoliert und strukturell charakterisiert.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19966220433
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  • 6
    Electronic Resource
    Electronic Resource
    Zur Chemie des Dimesityleisens. IX [1]. Diaryleisen-Komplexe der Koordinationszahl drei und vier: Kristallstrukturen von [FeMes2(col)] (Mes = 2,4,6-Trimethylphenyl, col = 2,4,6-Trimethylpyridin) und [FeTrip2(py)2] (Trip = 2,4,6-Triisopropylphenyl, py = Pyridin) (1996)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 1269-1273 
    Details
    ISSN: 0044-2313
    Keywords: Dimesityliron ; complex compounds ; crystal structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chemistry of Dimesityl Iron. IX. Diaryl-Iron Complexes with Coordination Number Three and Four: Crystal Structures of [FeMes2(col)] and [FeTrip2(py)2]The diaryliron compounds FeMes2, 1, and FeTrip2, 2, from complexes with coordination numbers (CN) of four, normally. Bulky ligands however give adducts with CN of three. The crystal structures of compounds [1(col)] (CN 3) and [2(py2)] (CN 4) have been determined.
    Notes: FeMes2, 1, und FeTrip2, 2, bilden Komplexe der Koordinationszahl (KZ) vier. Mit großvolumigen Liganden wird jedoch nur ein Donor angelagert. Die Kristallstrukturen von [1(col)] (KZ 3) und [2(py)2] (KZ 4) werden mitgeteilt.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19966220727
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  • 7
    Electronic Resource
    Electronic Resource
    Zur Chemie des Dimesityleisens. XI. Reaktion von Dimesityleisen mit β-Diketonen - Strukturen von Bis(diethylether)-bis(1,3-diphenylpropan-1,3-dionato)eisen(II) und Poly[bis(2,2,6,6-tetramethylheptan-3,5-dionato)eisen(II)-μ-(1,4-dioxan)] (1997)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 623 (1997), S. 155-158 
    Details
    ISSN: 0044-2313
    Keywords: Dimesityliron ; diketonate complexes ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chemistry of Dimesityl Iron. XI. Reaction of Dimesityl Iron with β-Diketones - Structures of Bis(diethylether)-bis(1,3-diphenylpropane-1,3-dionato)iron(II) and Poly[bis(2,2,6,6-tetramethylheptane-3,5-dionato)iron(II)-μ-(1,4-dioxan)]Reactions of tetramesityl diiron, Fe2Mes4 1, with β-diketones in the molar ratio of 1:4 form the diketonate complexes [Fe(diketonate)2]. Acidolysis of 1 with 1,3-diphenylpropane-1,3-dione (Hdbm) forms [Fe(dbm)2(OEt2)2] and with 2,2,6,6-tetramethylheptane-3,5-dione the coordination polymer [{Fe(dpm)2(μ-dioxane)}n] is obtained. The crystal structures of both complexes are presented.
    Notes: Die Umsetzung von Tetramesityldieisen, Fe2Mes4 1, mit β-Diketonen im Verhältnis 1 : 4 ergibt die Diketonatoeisenkomplexe [Fe(diketonat)2]. Aus 1 und Dibenzoylmethan (Hdbm) sowie Dipivaloylmethan (Hdpm) wurden [Fe(dbm)2(OEt2)2] und [{Fe(dpm)2(μ-dioxan)}n] hergestellt und ihre Strukturen bestimmt.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19976230126
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