ISSN:
0044-2313
Keywords:
Chromium
;
manganese
;
iron complexes
;
methylcyclopentadienyl
;
carbonyl
;
nitrosyl ligands
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Reactions of Nitrosyl Complexes. XIII. Synthesis of Novel Di- and Trinuclear Heterobimetallic Complexes with Bridging NO LigandsBy reaction of [{Cp′Fe(μ-NO)}2] with [Cp′Mn(CO)2 · (THF)] (Cp′ = μ5-C5H4Me) in THF [Cp3′Fe2Mn(μ-CO)2(μ-NO) · (μ3-NO)] 1 is formed in high yield. The reaction of [{Cp′Fe(μ-NO)}2]Na with [Cp′Mn(CO)2NO]BF4 in DME/acetone yields besides known [{Cp′Mn(CO)(NO)}2] 2 the novel complex [Cp2′FeMn(μ-NO)2NO] 3. By interaction between [Cp′Mn(CO)2(THF)] and 3, [Cp3′FeMn2(μ-CO)(μ-NO)2 · (μ3-NO)] 4 is formed. The complex 4 represents the hitherto unknown missing link in the series of the isoelectronic clusters [Cp3′Mn3(μ-NO)3(μ3-NO)], 1, and [Cp3′Fe3(μ-CO)3(μ3-NO)]. Attempts to synthesize the unknown complex [(Cp′FeNO)2 · Cr(CO)5] by addition of carbene analogous Cr(CO)5 fragments to the Fe=Fe bond in [{Cp′Fe(μ-NO)}2] only led to very low yields of [Cp2′FeCr(CO)5] 5. The new complexes were characterized by mass, NMR and IR spectra.
Notes:
Bei der Umsetzung von [{Cp′Fe(μ-NO)}2] mit [Cp′Mn(CO)2(THF)] (Cp′ = η5-C5H4Me) in THF wird in hoher Ausbeute [Cp3Fe2Mn(μ-CO)2(μ-NO)(μ3-NO)] 1 gebildet. Die Reaktion von [{Cp′Fe(μ-NO)}2]Na mit [Cp′Mn(CO)2NO]· BF4 in DME/Aceton liefert neben bekanntem [{Cp′Mn(CO) · (NO)}2] 2 den neuen Komplex [Cp2′FeMn(μ-NO)2NO] 3. Bei der Einwirkung von [Cp′Mn(CO)2(THF)] auf 3 entsteht als Hauptprodukt [Cp3′FeMn2(μ-CO)(μ-NO)2(μ3-NO)] 4. Der Komplex 4 stellt das bislang fehlende Glied in der Reihe der isoelektronischen Cluster [Cp3′Mn3(μ-NO)3(μ3-NO)], 1 und [Cp3′Fe3(μ-CO)3(μ3-NO)] dar. Versuche, durch Addition carbenanaloger Cr(CO)5-Fragmente an die Fe=Fe-Bindung in [{Cp′ Fe(μ-NO)}2] den unbekannten Komplex [(Cp′FeNO)2Cr(CO)5] zu synthetisieren, führten lediglich in sehr geringer Ausbeute zu [Cp2′FeCr(CO)5] 5. Die neuen Komplexe wurden durch Massen-, NMR- und IR-Spektren charakterisiert.
Additional Material:
2 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19956210907
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