ISSN:
0009-2940
Schlagwort(e):
Lewis acids, organometallic
;
14e- Systems
;
Allyl complexes
;
Rhenium complexes
;
Ruthenium complexes
;
Chemistry
;
Inorganic Chemistry
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
Organometallic Lewis Acids, XLVIII[1]. - New Precursors to Organometallic Cationic Lewis Acids with two Accessible Coordination Sites: (OC)4Re(OEt2)FBF3 and (OC)2 (PPh3)2Ru(FBF3)2The allyl transfer reaction between Re(CO)5- and [(η31-allyl)PdCl]2 complexes leads to (allyl)rhenium complexes (η31-H2CCR1CR2R3) Re(CO)4 (1: R1, R2, R3=H; 2; R2, R3=H, R1=Me; 3: R1, R2=H, R3=Me; 4: R1=H, R2, R3=Me). The 2-methylallyl complex 2 has been characterized by low-temperature X-ray diffraction. Protonation of 1 with HBF4 · OEt2 in CH2Cl2 gives the complex (OC)4Re(OEt2)FBF3 (5), which is a precursor for the 14 e- System “(OC)4Re+”. THF and H2O replace the diethyl ether in 5 to give [(OC)4Re(solvent)2]BF4 (6, 7). The reaction of (OC)2(PPh3)2RuCl2 with AgBF4 yields the complex (OC)2 (PPh3)2Ru(FBF3)2 (8), which can be considered as a precursor for the 14 e- cation “(OC)2 (PPh3)2Ru2+” and reacts with H2O to give [(OC)2 (PPh3)2Ru(F)(H2O)]BF4 (9). Complexes 5-9 are characterized by IR, 1H-, 13C-, 31P-and 19F-NMR spectroscopy.
Zusätzliches Material:
1 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/cber.19931260412
Permalink
