1,3-Diisopropylimidazolium bis(cyclooctatetraenyl)erbate(III)

Peter G. Jones, Cristian G. Hrib, Tarun K. Panda, Matthias Tamm
2007 Acta Crystallographica Section E  
Key indicators: single-crystal X-ray study; T = 133 K; mean (C-C) = 0.003 Å; R factor = 0.020; wR factor = 0.042; data-to-parameter ratio = 26.1. In the title compound, (C 11 H 21 N 2 )[Er(C 8 H 8 ) 2 ], the anion displays the sandwich form with planar and parallel cyclooctatetraenyl ligands. The perpendicular distances of the Er atom from the C 8 planes are 1.8809 (7) and 1.8476 (8) Å , with individual Er-C bond lengths in the range 2.596 (2)-2.651 (2) Å . The extended structure consists of
more » ... ture consists of chains of alternating anions and cations parallel to (101); residues are connected by C-HÁ Á Á interactions and neighbouring formula units are related by an n glide plane. Experimental Crystal data (C 11 H 21 N 2 )[Er(C 8 H 8 ) 2 ] M r = 556.85 Monoclinic, P2 1 =n a = 12.7879 (12) Å b = 8.7333 (8) Å c = 21.531 (2) Å = 94.100 (3) V = 2398.5 (4) Å 3 Z = 4 Mo K radiation = 3.51 mm À1 T = 133 (2) K 0.33 Â 0.25 Â 0.14 mm Data collection Bruker SMART 1000 CCD diffractometer Absorption correction: multi-scan (SADABS; Bruker, 1998) T min = 0.390, T max = 0.639 46432 measured reflections 7325 independent reflections 6213 reflections with I > 2(I) R int = 0.031
doi:10.1107/s1600536807030899 fatcat:r2amkzgpirg7blxhq5kci2vho4