ISSN:
0044-2313
Keywords:
Metallodiphosphenes
;
alkyl isocyanides
;
1,3-diphosphapropene
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Transition Metal-substituted Diphosphenes. 37. Cleavage of the P=P Bond in the Metallodiphosphene (η5-C5Me5)(CO)2Fe—P=P—Mes* (Mes* = 2,4,6-tBu3C6H2) by Alkyl Isocyanides. Structure of (μ5-C5Me5)(CO)2Fe—P(NH—CH2C6H5)—C(NH—CH2C6H5)=PMes*The reaction of the metallodiphosphene (η5-C5Me5) · (CO)2Fe—P=P—Mes* (1) with two equivalents of cyclohexylisocyanide (3 a) or benzylisocyanide, respectively, afforded (E/Z)-mixtures of the 2,4-diimino-1,3-diphosphetanes (η5-C5Me5)(CO)2Fe—=NR (3 a: R = c-C6H11; 3 b: R = CH2C6H5). Complex 1 reacted with one equivalent of benzylisocyanide in an excess of benzylamine to give the 3-metallo-1,3-diphosphapropene (η5-C5Me5)(CO)2Fe—P·(NH—CH2C6H5)—C(NH—CH2C6H5)=PMes* (4). Constitution and configuration of the compounds 3 a, b, 4 were established by elemental analysis and spectra (IR, 1H-, 13C-, 31P-NMR, MS). The molecular structure of 4 was determined by x-ray diffraction analysis.
Notes:
Die Reaktion des Metallodiphosphens (η5-C5Me5)(CO)2Fe—P=P—Mes* (1) mit zwei Äquivalenten Cyclohexylisocyanid (2 a) bzw. Benzylisocyanid (2 b) liefert (E/Z)-Gemische der 2,4-Diimino-1,3-diphosphetane (η5-C5Me5)(CO)2Fe—=NR (3 a: R = c-C6H11; 3 b: R = CH2C5H5). Komplex 1 reagiert mit einem Äquivalent Benzylisocyanid in Benzylamin als Lösungsmittel zu dem 3-Metallo-1,3-diphosphapropen (η5-C5Me5)(CO)2Fe—P · (NHCH2C6H5)—C(NHCH2C6H5)=PMes* (4). Konstitution und Konfiguration der Verbindungen 3 a, b, 4 wurden durch Elementaranalysen und Spektren (IR, 1H, 13C, 31P-NMR, MS) ermittelt. Von 4 wurde zusätzlich eine Einkristall-Röntgenstrukturanalyse durchgeführt.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19956210821
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