ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
Collection
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 115 (1982), S. 2487-2493 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Trinuclear Ruthenium Cluster Anions Containing Triorganylsilyl, -germyl, and -stannyl LigandsThe reaction of Na[HRu3(CO)11] with triorganylsilanes, -germanes, and -stannanes R'R2XH (X = Si, Ge, Sn; R, R' = organyl) affords trinuclear cluster anions of the type [HRu3(CO)10(XR2R')2]-, which can be isolated as the bis(triphenylphosphoranyliden)ammonium or the tetraethylammonium salts. The structure of an isosceles Ru3 triangle with one hydride bridge and two XR2R' ligands at the bridgehead ruthenium atoms is proposed for the anions on the basis of NMR evidence. The reaction proceeds under elimination of H2 and CO and is reversible; the formation of [HRu3(CO)10(SiEt3)2]- from [DRu3(CO)11]- and Et3SiH reveals the eliminated hydrogen to be arising from the cluster.
    Notes: Die Umsetzung von Na[HRu3(CO)11] mit Triorganylsilanen, -germanen und -stannanen R'R2XH (X = Si, Ge, Sn; R, R' = organyl) führt zu dreikernigen Clusteranionen des Typs [HRu3(CO)10(XR2R')2]-, die sich als Bis(triphenylphosphoranyliden)ammonium- bzw. Tetraethylammonium-Salze isolieren lassen. Aufgrund der spektroskopischen Befunde wird für die Anionen die Struktur eines gleichschenkligen Ru3-Dreiecks mit einer Hydridbrücke und zwei XR2R'-Liganden an den beiden Brückenkopf-Rutheniumatomen vorgeschlagen. Die Reaktion verläuft unter Eliminierung von H2 und CO und ist reversibel; die Bildung von [HRu3(CO)10(SiEt3)2]- aus [DRu3(CO)11]- und Et3SiH zeigt, daß der freigesetzte Wasserstoff aus dem Cluster eliminiert wird.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 117 (1984), S. 1999-2005 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Sulfur Diimides Containing Organoelement Substituents of Main Group 5A suspension of the salt K2SN2 (1) in acetonitrile reacts with diorgano-element halides R2EX (E = P, As, Sb, Bi; X = Cl or Br) at -40 °C to give new sulfur diimides, S(N - Er2)2. The arsino derivative 3b is the most stable member of the series of tert-butyl compounds, S(N - EtBu2)2 (E = P (2b), As (3b), Sb (4b), and Bi (5b)), while 5b decomposes under ambient conditions. The arsino derivatives S(N - AsR2)2 with R = methyl (3a), cyclohexyl (3c), and phenyl (3d) have also been prepared. The IR-, NMR-, and mass spectra are discussed.
    Notes: Das Salz K2SN2 (1) reagiert in Acetonitril-Suspension bei - 40 °C mit Diorganylelementhalogeniden R2EX (E = P, As, Sb, Bi; X = Cl oder Br) zu neuen Schwefeldiimiden S(N - ER2)2. In der Reihe der tert-Butylverbindungen S(N - EtBu2)2 (E = P (2b), As (3b), Sb (4b) und Bi (5b) und Bi (5b) ist 3b am beständigsten; 5b zersetzt sich unter Normalbedingungen. Weiterhin wurden die Arsenderivate S(N - AsR2)2 mit R = Methyl (3a), Cyclohexyl (3c) und Phenyl (3d) dargestellt. Die IR-, NMR- und Massenspektren werden diskutiert.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 119 (1986), S. 1424-1428 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Mixed Sulfur Diimides Containing Phosphino and Arsino SubstituentsThe symmetrically substituted sulfur diimides tBu2E—NSN—EtBu2 (E = P (1a), As (1b)) can be cleaved to give the mono-potassium salts [tBu2E—NSN]K (E = P (2a), As (2b)). The salt 2a reacts with tBu2AsCl providing the mixed sulfur diimide tBu2P—NSN—AstBu2 (3). Chalcogens such as sulfur, selenium, and tellurium add specifically at the phosphorus atom of 3 to form tBu2P(Y)—NSN—AstBu2 (Y = S (4a), Se (4b), Te (4c)).
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie in unserer Zeit 29 (1995), S. 159-159 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Bei den 34 gewerblichen Berufsgenossenschaften, den landwirtschaftlichen Berufsgenossenschaften und den Unfallversicherungsträgern der öffentlichen Hand wurden in den letzten Jahren in zunehmender Zahl Chemiker als Technische Aufsichtsbeamte eingestellt. Das führte dazu, daß heute nicht nur die Berufsgenossenschaft der chemischen Industrie, sondern auch die meisten anderen Berufsgenossenschaften mindestens einen Diplom-Chemiker oder einen promovierten Chemiker beschäftigen. Dies spiegelt den steigenden Einsatz von chemischen Produkten und die wachsende Bedeutung der Gefahrstoffproblematik in allen Industriesparten wider.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 120 (1987), S. 1447-1448 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Sulfur Diimdides Containing Thioarsinyl and Selenoarsinyl SubstituentsWhile bis(di-tert-butylphosphino)sulfur diimide, S(N-PtBu2)2 (1a), readily adds both elemental sulfur and selenium below 0°C to give 1: 2 adducts S[N - P(Y)tBu2]2 [Y=S (1b), Se (1b), Se (1c)], the analogous bis(di-tert-butylarsino)sulfur diimide, S(N - AstBu2)2 (2a), is almost unreactive under comparable conditions. However, thioarsinyl sulfur diimide, S[N - As(S)tBu2]2 (2b), can be obtained from K2SN2 and two equivalents of tBu2As(S)Cl. In contrast to sulfur, selenium is slowly attached to the arsino centers of 2a in toluene solution at 25°C to give both the di- and the monoselenium adduct, S[N-As(Se)tBu2]2 (2c) and tBu2As(NSN)As(Se)tBu2 (2d), respectively.
    Notes: No Abstract
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...