ISSN:
0009-2940
Keywords:
syn1-Periplanar bisazo skeletons
;
Carbonylmetal complexes
;
Iron complexes
;
Ruthenium complexes
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Preparatively useful synthesis for the novel, relatively mobile polycyclic syn1-periplanar bisazo polycycles 4 and 5 are based on hydrazine condensation with readily available dienedione 6 and acid-catalyzed rearrangement of bisurazole 12, respectively. In the preferred “closed” and “open” conformations of 4 and 5 the N=N bonds are 314 and 496 pm, respectively, apart (MMX). From the reactions of 4 and 5 with carbonyliron and -ruthenium compounds, complexes are derived which are typical of monoazo ligands [4 · Fe(CO)4 ≡ 20, 4 · Fe2(CO)7≡21, 4 · Fe3(CO)9≡22, 4≡[Fe2(CO)6]2≡23, 4 · Ru3(CO)9 · 24, 5 · [Fe2(CO)6]2 ≡ 25, 5 · Fe2(CO)6 · Fe3(CO)9 ≡ 26]. For 21, 23 and 26 crystal structure analyses were performed, confirming i.a. in 26 the unique presence of a Fe2(CO)6 and a Fe3(CO)9 fragment attached to two azo units of the same molecule.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19931260221
