[5-Hydroxy-3-phenyl-1-(pyridin-2-yl)pyrazol-5-olato]diphenylboron

• Published in: Acta crystallographica. Section E, Structure reports online Vol. 67; no. Pt 4; p. o979
• Main Authors: Lee, Kee-In, Bin, Hye-Rin, Lee, Do-Min, Kim, Chong-Hyeak
• Format: Journal Article
• Language: English
• Published: United States International Union of Crystallography 01.04.2011
• Subjects: Organic Papers
• ISSN: 1600-5368; 1600-5368
• DOI: 10.1107/S1600536811010634

In the title compound, C(26)H(20)BN(3)O, the B atom has tetra-hedral geometry and is linked to two phenyl rings, the O atom of the hy-droxy-pyrazole ring and the N atom of the pyridinyl ring. A six-membered BOCNCN ring forms by coordination of the B atom and the pyridinyl N atom. The BOCNCN ring has an envelope conformation [dihedral angle = 36.7 (1)° between the planar ring atoms and the flap] with the B atom out of the plane. In the 1-(2-pyridin-yl)-3-phenyl-5-hy-droxy-pyrazole group, the pyridinyl ring, the phenyl ring and the pyrazole ring are almost coplanar: the pyrazole ring makes a dihedral angle of 9.56 (8)° with the pyridinyl ring and 17.68 (7)° with the phenyl ring. The crystal structure is stabilized by π-π stacking inter-actions involving the pyridinyl and pyrazole rings of centrosymmetrically related mol-ecules, with ring centroid separations of 3.54 (5) Å.