ortho-(Benzoyl)phenylarsonic acid

<h2>Acta Crystallographica Section C</h2><h3>Crystal Structure Communications</h3><h3>0108-2701</h3> <h2>short format (metal-organic compounds)</h2> Volume 44 Part 11 Pages 2024-2025 November 1988 <h2> ortho -(Benzoyl)phenylarsonic acid</h2> E. Irmer, G. M. Sheldrick, S. S. Parmar and H. K. Saluja Acta Cryst. (1988). C44, 2024-2025 ortho-(Benzoyl)phenylarsonic Acid BY ERHARD IRMER AND GEORGE M. SHELDRICK Institut fiir A norganische Chemie der Universitdt, Tammannstrasse 4, D-3400 Gb'ttingen, Federal Republic of Germany AND SWARN SINGH PARMAR AND HARVEEN KAUR SALUJA Department of Chemistry, Guru Nanak Dev University, Amritsar- 143005, India (Received 20 May 1988; accepted 21 June 1988) Abstract. Cl3HllAsO4, Mr=306.15, orthorhombic, P212~21, a = 6-1611 (3), b = 13.6596 (7), c = 14.7371 (11) A, V= 1240.26/~3, Z = 4, Dx = 1.639 Mg m-3, 2(Mo Ka) = 0.71069 A, p = 2.73 mm-~, F(000) = 616, T= 298 K, R = 0.0178 for 2125 observed reflections. There is a short non-bonded interaction [2.741 (2)A] between the carbonyl oxygen [0(4)] and As, and both OH groups make hydrogen bonds [O(2)-O(1') 2.619(3) and O(3)-O(1') 2.607 (3) A] to the relatively charged terminal oxygens of symmetry-related arsonate groups. Experimental. Crystal size 0.5 x 0.3 x 0.3 mm. Stoe- Siemens four-circle diffractometer, monochromated Mo Ka radiation, profile-fitting mode involving variable scan width and speed (Clegg, 1981). 3654 reflections measured, 20max 50°, three check reflections with no significant intensity variation. 2174 unique reflections (Ri,t = 0.0168), of which 2125 with F > 3o(F) were used for all calculations (SHELXS86, Sheldrick, 1985; SHELX76, Sheldrick, 1976). Cell constants refined from +20 values of 54...