Sr 21 Bi 8 Cu 2 (CO 3 ) 2 O 41 , a Bi 5+ Oxycarbonate with an Original 10L Structure

Sylvie Malo (1) , Artem M. Abakumov (2) , Marco Daturi (3) , Denis Pelloquin (1) , Gustaaf Van Tendeloo (2) , Anne Guesdon (1) , Maryvonne Hervieu (1)

1 CRISMAT - Laboratoire de cristallographie et sciences des matériaux
2 Electron Microscopy for Materials Science - EMAT (Antwerp, Belgium)
3 LCS - Laboratoire catalyse et spectrochimie

The layered structure of Sr21Bi8Cu2(CO3)2O41 (Z = 2) was determined by transmission electron microscopy, infrared spectroscopy, and powder X-ray diffraction refinement in space group P63/mcm (No. 194), with a = 10.0966(3)Å and c = 26.3762(5)Å. This original 10L-type structure is built from two structural blocks, namely, [Sr15Bi6Cu2(CO3)O29] and [Sr6Bi2(CO3)O12]. The Bi5+ cations form [Bi2O10] dimers, whereas the Cu2+ and C atoms occupy infinite tunnels running along c⃗. The nature of the different blocks and layers is discussed with regard to the existing hexagonal layered compounds. Sr21Bi8Cu2(CO3)2O41 is insulating and paramagnetic.

Mots clés: Inorganic carbon compounds; Oligomers; Chemical structure; Layers; Cations

Domaines: Chimie

Sylvie Malo, Artem M. Abakumov, Marco Daturi, Denis Pelloquin, Gustaaf Van Tendeloo, et al.. Sr 21 Bi 8 Cu 2 (CO 3 ) 2 O 41 , a Bi 5+ Oxycarbonate with an Original 10L Structure. Inorganic Chemistry, 2014, 53 (19), pp.10266-10275. ⟨10.1021/ic501322w⟩. ⟨hal-01840251⟩