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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 25, Number 7
BKCSDE 25(7)
July 20, 2004 

Palladium(II) Schiff Base Complexes Derived from Allylamine and Vinylaniline
Yoon-Seo Uh, Haiwen Zhang, Christopher M. Vogels, Andreas Decken, Stephen A. Westcott*
Salicylaldimines, Allylamine, Palladium, Vinylaniline
Condensation of salicylaldehyde (2-HOC6H4C(O)H) with allylamine afforded the unsaturated salicylaldimine, 2-HOC6H4C(H)=NCH2CH=CH2. Similar reactivity was observed with substituted salicylaldehydes. Further reaction of these Schiff bases with palladium acetate or Na2PdCl4 afforded complexes of the type PdL2, where L = deprotonated Schiff base. The molecular structure of the parent salicylaldimine palladium complex [trans-(2-OC6H4C(H)=NCH2CH=CH2)2Pd] (1) was characterized by an X-ray diffraction study. Crystals of 1 were monoclinic, space group P21/n, a = 14.0005(9) A, b = 7.2964(5) A, c = 17.5103(12) A, β = 100.189(1)o, Z = 4. Analogous chemistry with 4-vinylaniline also gave novel palladium complexes containing a pendant styryl group. Crystals of [trans-(2-HOC6H4C(H)=N-4-C6H4CH=CH2)2Pd] (4) were monoclinic, space group P21/c, a = 13.7710(14) A, b = 11.0348(11) A, c = 7.8192(8) A, β = 98.817(2)o, Z = 2.
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