Combining oximes with azides to create a novel 1-D [NaCo(III)(2)] system: synthesis, structure and solid-state NMR.
The synthesis and structure of a novel complex with the formula [NaCo(III)(2)(dmo)(2)(mu-N(3))(3)(N(3))(2)](infinity), , are reported. Complex was synthesized from the reaction of 1-(dimethylamino)propan-2-one oxime (Hdmo), CoCl(2).6H(2)O, and NaN(3) in MeOH. It crystallizes in the monoclinic space group C2/c. The molecular structure consists of one Na(I) and two Co(III) ions bridged by two oxime ligands, two end-to-end azide and three end-on azide anions. The units are linked, forming a 1-D chain. This complex was characterized by UV-Vis spectroscopy where the data confirm the presence of low-spin Co(III) ions. Solid-state (23)Na NMR experiments indicate the presence of one magnetically unique site in the repeating unit, that sample purity in the bulk powdered form is high, and that it possesses microcrystalline order. Solid-state (59)Co NMR experiments at ultra-high field (B(0) = 21.1 T) are in agreement with the structure obtained through X-ray crystallography where the Co(III) ions are coordinated to five nitrogen atoms as well as an oxygen atom.
Pathmalingam
Thushan
T
Department of Chemistry, University of Ottawa, 10 Marie-Curie, Ottawa, ON K1N6N5, Canada.
Habib
Fatemah
F
Widdifield
Cory M
CM
Loiseau
Francis
F
Burchell
Tara J
TJ
Gorelsky
Serge I
SI
Beauchemin
André M
AM
Bryce
David L
DL
Murugesu
Muralee
M
D001386:Azides / Q000737:chemistry*; D003035:Cobalt / Q000737:chemistry*; D056831:Coordination Complexes / Q000138:chemical synthesis* / Q000737:chemistry; D018360:Crystallography, X-Ray; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D010091:Oximes / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet
D001386:Azides; D056831:Coordination Complexes; D010091:Oximes; D003035:Cobalt