ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

Your email was sent successfully. Check your inbox.

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

Proceed reservation?

Export
  • 1
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Complex Chemistry of Polyfunctional Ligands, 511) About Halogeno- and Pseudohalogeno-manganese(I)-carbonyl Complexes of the TritertiaryPhosphane 1,1,1 -Tris[(diphenylphosphino)methyl]ethane [Mn+1(CO)3(R2PCH2)3CCH3][Mn-1(CO)5] (R = C6H5) (2) reacts with aqueous HX (X = Cl, Br, I) to give [Mn(CO)3(R2PCH2)3CCH3]X (4a-c). 4a undergoes metathesis with NaN3 to yield 4d (X = N3). On ultraviolet irradiation the ionic 4a-d rearrange to the nonionic, monomeric complexes XMn(CO)3(R2PCH2)2C(CH3)CH2PR2 (5a-d). 5e (X = NCO) is obtained from the reaction of [Mn(CO)3(R2PCH2)3CCH3]Y (Y = Clo4, BR4) (3a, b) with KOCN under UV irradiation. The potentially tridentate ligand CH3C(CH2PR2)3 (1) serves in 5 as a bidentate monometallic ligand. Boiling of 5a-e in acetone leads to CO elimination and formation of XMn(CO)2(R2PCH2)3CCH3 (6a-e). These compounds arc more easily obtained by the direct reaction of 3a, b with alkali metal halides and pseudohalides MX (M = Na, K, X = Cl, Br, I, N3, NCO) on ultraviolet irradiation in methyl alcohol. The new complexes have been characterized by conductimetry and spectroscopy.
    Notes: [Mn+1(CO)3(R2PCH2)3CCH3][Mn-1(CO)5] (R = C6H5) (2) setzt sich mit HX in wäßriger Lösung (X = Cl, Br, I) zu [Mn(CO)3(R2PCH2)3CCH3]X (4a-c) um. 4a reagiert mit NaN3 unter Metathese zu 4d (X = N3). Bei der Bestrahlung mit UV-Licht lagern sich die ionischen Komplexe 4a - d in die nicht ionischen, monomeren Komplexe XMn(CO)3(R2PCH2)2C(CH3)CH2PR2 (5a-d) um. 5e (X = NCO) erhält man durch Umsetzung von [Mn(CO)3,(R2PCH2)3CCH3,]Y (Y = C1O4, BR4) (3a, b) mit KOCN bei UV-Bestrahlung. Der potentiell dreizahnige Ligand CH3C(CH2PR2)3 (1) wirkt in 5 lediglich zweifachkoordinierend monometallisch. Erhitzt man 5a-c in Aceton, so entstehen unter Eliminierung von CO XMn(CO)2(R2PCH2)3CCH3 (6a-v). Diese sind einfacher durch direkte Reaktion von 3a, b mit Alkalimetallhalogeniden und -pseudohalogeniden MX (M = Na, K, X = Cl, Br, I, N3. NCO) bei gleichzeitiger UV-Bestrahlung; in Methanol zugänglich. Die Verbindungen wurden durch Leitfähigkeitsmessungen und spektroskopisch charakterisiert.
    Additional Material: 5 Tab.
    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...