title: Crystal Structure, Luminescence and Triboluminescence of the Complex [Eu(NO3)23hmpa] NO3·HQuin.
abstract: The atomic structure of crystals of the complex [Eu(NO3)23hmpa] NO3·HQuin , (hmpa - hexamethylphosphortriamide, HQuin - quinaldic acid) characterized by intensive luminescence and triboluminescence has been determined by the X-ray method. The noncentro-symmetric crystals of the compound are rhombic : a = 16.8193(3), b = 12.2877(2), c = 27.6516(5) Å, пр. гр. Pca2(1), Z = 4, ρcalc. .= 1.427 g/сm3. The crystals have a structure of the insular type which is presented by the isolated complex molecules, outer-sphere NO3-- groups, and neutral molecules of quinaldic acid. Some structural aspects of formation of the luminescent and triboluminescent properties of the compound were discussed: the role of break planes in the crystal destruction was revealed.
authors.affiliation: Russian Academy of Sciences, Institute of Chemistry, Far-Eastern Branch, 159, Prosp. 100-letiya Vladivostoka, Vladivostok, 690022, Russia.
authors.forename: B V
authors.initials: BV
authors.lastname: Bukvetskii
authors.affiliation: Russian Academy of Sciences, Institute of Chemistry, Far-Eastern Branch, 159, Prosp. 100-letiya Vladivostoka, Vladivostok, 690022, Russia. kalinovskaya@ich.dvo.ru.
authors.forename: I V
authors.initials: IV
authors.lastname: Kalinovskaya
keywords: Crystal structure; Europium(III) complexes; Luminescence; Triboluminescence