The photophysical behaviour of N,N-diethyl-2-( 1 -naphthyl)ethylamine I, N-benzyl-N-ethyl-2-(1naphthy1)ethylamine VI and N-ethyl-2(1 -naphthyl) -N(2,4,6-trichlorobenzyI)ethylamine VII, molecules that are able to form intramolecular exciplexes, has been examined in ethyl acetate. Compounds I and VI are fluorescent, but VII is non fluorescent and decomposes with formation of hydrogen chloride. Th...

Ureido pyrimidinedione derivatives with phenyl, 1-naphthyl and 2-naphthyl substituents form stable dimers via quadruple hydrogen bonding, but the 1-naphthyl derivative presents an unexpected tautomer in the solid state.

The purine antagonists with which this paper is concerned are of interest in the chemotherapy of neoplastic diseases and belong to either of the two groups: the substituted purines such as 6-mercaptopurine (6MP) (1) and isomers of purines such as 4-aminopyrazolo (3,4-d) pyrimidine (4APP) (2). In connection with their pharmacological studies (3), it is essential to have a method available for th...

The title compound, [Ru(3)(C(12)H(12)N)(3)(CO(3))(C(6)H(6))(3)]PF(6)·CH(2)Cl(2), was obtained unintentionally as the product of an attempted deprotonation of the monomeric parent ruthenium complex [Ru(C(12)H(12)N)(C(6)H(6))(C(2)H(3)N)]PF(6). The carbonate ligand bridges three half-sandwich cyclo-ruthenated fragments, each of them exhibiting a pseudo-tetra-hedral geometry. The configuration of t...

The title compound, [Ni(C(17)H(11)ClN)Cl(C(3)H(9)P)(2)], was obtained as a product of the reaction of [Ni(PMe(3))(4)] with a molar equivalent of 2,6-dichloro-N-naphthyl-benzaldehyde-amine in diethyl ether. The τ parameter is 0.3, indicating that the coordination geometry is square-pyramidal. The Ni(II) atom lies in the center of a square pyramidal in which one C, one Cl and two P atoms form the...