Structural properties of trans-chloro (4-acetylpyridine) (1,4,8,11-tetraazacyclotetradecane) ruthenium (ii) tetrafluoroborate , trans- ['RU''CL'(cyclam) (4-acpy)] (b'F IND.4'), by x-ray diffraction and nmr spectroscopy - Silva, R. S.; Gambardella, Maria Teresa do Prado; Santos, Regina Helena de Almeida; Mann, B E; Tfouni, E (Inorganica Chimica Acta, 1996)