ISSN:
0044-2313
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
On the Reactivity of Disilylarsenido Iron Complexes towards Carbonyl Chlorides: The First Arsaalkenyl- and Diacylarsenido Complexes. X-Ray Structure Analysis of Z-[(η5-C5H5)(CO)2Fe—As=C(OSiMe3)(t-Bu)]The reaction of equimolar amounts of (η5-C5H5)(CO)2FeAs(SiMe3)2 (1a) with the carbonyl chlorides RC(O)Cl (R = t-Bu, 2,4,6-Me3C6H2 and 2,4,6-t-Bu3C6H2) yields the arsaalkenyl complexes Z-[(η5-C5H5)(CO)2Fe—As=;C(OSiMe3)R (2-4)]. The diacylarsenido complexes (η5-C5H5)(CO)2Fe—As[C(O)R]2 (5, 6) are generated by treatment of 1a with two equivalents of pivaloyl chloride or mesitoyl chloride, respectively. The As=C-double bond length of 2 (1.821(2) Å) was determined by single crystal x-ray analysis.
Notes:
Bei der Reaktion äquimolarer Mengen (η5-C5H5)(CO)2FeAs(SiMe3)2 (1a) mit den Carbonsäurehalogeniden RC(O)Cl (R = t-Bu, 2,4,6-Me3C6H2 und 2,4,6-t-Bu3C6H2) werden die Arsaalkenylkomplexe Z-[(η5-C5H5)(CO)2Fe—As=C(OSiMe3)R (2 - 4)] gebildet. Die Umsetzung von 1a mit zwei Äquivalenten Pivaloylchlorid oder 2,4,6-Trimethylbenzoylchlorid liefert die Diacylarsenidokomplexe (η5-C5H5)(CO)2Fe—As[C(O)R]2 (5, 6). Durch Röntgen-Strukturanalyse an kristallinem 2 wurde die darin vorliegende As=C-Doppelbindung zu 1,821(2) Å bestimmt.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19875490609
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