Acta Crystallographica Section E (Oct 2010)

Bis(3-methylphenolato-κO)(nitrosyl-κN)[tris(3,5-dimethylpyrazol-1-yl-κN2)hydridoborato]molybdenum(II)

  • Andrzej J. Włodarczyk,
  • Tomasz Lubera,
  • Piotr P. Romańczyk,
  • Wojciech Nitek

DOI
https://doi.org/10.1107/S1600536810033763
Journal volume & issue
Vol. 66, no. 10
pp. m1239 – m1240

Abstract

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The title complex, [Mo(C15H22BN6)(C7H7O)2(NO)], contains an {MoNO}4 core stabilized by κ3-hydrotris(3,5-dimethylpyrazol-1-yl)borate, [TpMe2]−, and two anionic m-cresolate ligands, leading to a distorted octahedral geometry for the Mo atom. The short Mo—O bond lengths [1.935 (2) and 1.971 (2) Å], as well as large Mo—O—Csp2 angles [134.2 (2) and 143.54 (19)°], indicate dπMo—pπO interactions, which are clearly weaker when compared with {Mo(NO)(TpMe2)} alkoxides. The nitrosyl system is virtually linear [179.3 (3)°] with Mo—N and N—O bond lengths of 1.760 (2) and 1.205 (3) Å, respectively. Intra- and intermolecular C—H(Ph or CH3)...π(Ph) interactions between adjacent phenyl rings are found in the crystal structure (dH...Ph in the range 2.743–2.886 Å). One of the Ph rings shows disorder, i.e. swinging in the ring plane.