A novel blue luminescent material Na2[Co(C2O4)2(H2O)2]·6H2O: synthesis, structure, luminescence and magnetic properties. Issue 20 (26th April 2016)

• Record Type: Journal Article
• Authors: Saritha, A.; Raju, B.; Narsimhulu, M.; Rao, D. Narayana; Raghavaiah, P.; Hussain, K. A.
• Is Part Of: Dalton transactions. Volume 45:Issue 20(2016)
• Page Start: 8500
• Page End: 8505
• Publication Date: 2016-04-26
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c6dt01185c
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : The synthesis, crystal structure and physical properties of new disodium trans -diaquabis(oxalato)cobaltate(ii )hexahydrate {Na2 [Co(C2 O4 )2 (H2 O)2 ]·6H2 O} crystals have been investigated. Abstract : The synthesis, crystal structure and physical properties of new disodium trans -diaquabis(oxalato)cobaltate(ii )hexahydrate {Na2 [Co(C2 O4 )2 (H2 O)2 ]·6H2 O} crystals have been investigated. Single crystal X-ray analysis reveals that this compound crystallizes in the triclinic system with the space group P 1̄. The structure of this complex consists of [Co(C2 O4 )2 (H2 O)2 ] 2− anionic units with a slightly distorted octahedral geometry of cobalt surrounded by four oxygen atoms of two oxalate groups. The anionic units are interlinked by two Na + ions with different octahedral and distorted octahedral environments. The electronic absorption spectra of the compound exhibit bands at 208, 246 and 526 nm in the UV and visible regions. A strong blue luminescence was observed at room temperature when excited at 355 nm. The M ( H ) curve at 2 K shows a significant nonlinear behaviour with almost zero coercivity which clearly indicates an extremely weak antiferromagnetic/ferromagnetic state of the complex.