ISSN:
0009-2940
Schlagwort(e):
Macrocycles
;
Benzomolybdacrown ethers
;
Host-guest chemistry
;
Stability constants
;
NMR titration
;
Chemistry
;
Inorganic Chemistry
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
The reaction of the diphosphanes 2a-i with (OC)4Mo(nbd) under high dilution conditions affords the mononuclear benzomolybdacrown ethers cis-(OC)4Mo{1,2-, 1,3-, 1,4-[PH2PCH2(CH2OCH2)πCH2]2C6H4-P, P′] (3a-i) (n = 1, 2). On the basis of the 31P nucleus the inclusion behavior of the molydacycles 3a-i toward the alkali metal salts LiBF4 and NaBPh4 was investigated with the aid of a NMR titration technique by using the program EQNMR. Only 3dshows an interaction with the alkali metal cation Na+ forming a 1:1 and 2:1 complex (3d/cation) while no interaction with Li+ could be detected. The molecular structures of 3a and 3d were elucidated by X-ray structural analyses. Complexes 3a and 3d crystallize in the monoclinic space groups P21/c and P21/n with Z = 8 and 4, respectively.
Zusätzliches Material:
6 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/cber.19971301218
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