Aquaoxobis(quinoline-2-carboxylato-N,O)vanadium(IV) ethanol hemisolvate

Nobuo Okabe, Yasunori Muranishi
2002 Acta Crystallographica Section E  
Key indicators Single-crystal X-ray study T = 296 K Mean '(C±C) = 0.013 A Ê R factor = 0.067 wR factor = 0.245 Data-to-parameter ratio = 15.9 For details of how these key indicators were automatically derived from the article, see N1B À1 (1) , O2CÐC11CÐC2CÐN1C À5.0 (9) and O2DÐ C11DÐC2DÐN1D À2 (1) ]. The quinoline-2-carboxylate ligands and the central V IV form ®ve-membered chelate rings. Such coplanarity and ®ve-membered ring formation are usually present in metal compounds of
more » ... of quinoline-2-carboxylic acid (Okabe & Makino, 1999). Planar ®ve-membered rings with similar bond lengths and angles are also found in a vanadium(III) complex with picolinic acid (pyridine-2carboxylic acid), [V III (pic) 3 ]ÁH 2 O (Chatterjee et al., 1997), which has a similar coordination geometry. Experimental The green prism crystal of (I) used for X-ray analysis was obtained by slow evaporation from a 4:1 mixture of quinoline-2-carboxylic acid dissolved in ethanol and VOSO 4 dissolved in a small amount of water. Crystal data [VO(C 10 H 6 NO 2 ) 2 (H 2 O)] 2 ÁC 2 H 5 OH M r = 904.63 Triclinic, P1 a = 11.745 (3) A Ê b = 16.727 (6) A Ê c = 10.425 (2) A Ê = 106.94 (2) = 93.58 (2) = 101.33 (3) V = 1905.3 (10) A Ê 3 Z = 2 D x = 1.577 Mg m À3 Mo K radiation Cell parameters from 25 re¯ections = 10.5±13.0 " = 0.57 mm À1 T = 296.2 K Prism, green 0.10 Â 0.10 Â 0.05 mm Data collection Rigaku AFC-5R diffractometer 3±2 scans Absorption correction: 2 scan (North et al., 1968) T min = 0.945, T max = 0.972 9184 measured re¯ections 8754 independent re¯ections 2975 re¯ections with I > 2'(I) Figure 1 ORTEPII (Johnson, 1976) drawing of the asymmetric unit of the title compound, with the atomic numbering scheme. Ellipsoids correspond to 50% probability.
doi:10.1107/s1600536802008619 fatcat:xtseq6jj7fb5xoadca3yzfmunq