Electronic absorption spectrum of copper formate tetrahydrate

✍ Scribed by S.V.J. Lakshman; J. Lakshmana Rao

• Publisher: Elsevier Science
• Year: 1975
• Tongue: English
• Weight: 384 KB
• Volume: 31
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(75)85033-0

✦ Synopsis

Single crystals of copper formate tetrahydrate were gown at room temperature. Spectra in the near infrared at room temperature and in the visible at room and liquid air temperatures were recorded on a Unicam SF'-7C0 spectraphotometer and Hilger medium quastz spectrograph respectively. l%e observed absorption bands have been attributed to ar! ion of Cuzc in tetragonal symmeiry with *Big as the ground state. Taking into consideration the spin-orbit coupling associated with the tetragonal field, a successful interpretition of all the observed bands lxs been made. The band observed in the near in-frYed at 11000 cm-l has been indentified with a vibrational overtone mode of COO. The crystal parameters derived are Dq= -1380 cm-' , Ds = -19.50 cm-' , Dt = -205 cm-l and h = -830 cm-'.