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Bis(3-methyl-phenolato-?O)(nitros-yl-?N)[tris-(3,5-dimethyl-pyrazol-1-yl-?N)hydridoborato]molybdenum(II).

ABSTRACT: The title complex, [Mo(C(15)H(22)BN(6))(C(7)H(7)O)(2)(NO)], contains an {MoNO}(4) core stabilized by ?(3)--hydrotris-(3,5-dimethyl-pyrazol-1-yl)borate, [Tp(Me2)](-), and two anionic m-cresolate ligands, leading to a distorted octa-hedral 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-Csp(2) angles [134.2?(2) and 143.54?(19)°], indicate d?(Mo)-p?(O) inter-actions, which are clearly weaker when compared with {Mo(NO)(Tp(Me2))} 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 inter-molecular C-H((Ph or CH(3)))??((Ph)) inter-actions between adjacent phenyl rings are found in the crystal structure (d(H?Ph) in the range 2.743-2.886?Å). One of the Ph rings shows disorder, i.e. swinging in the ring plane.

SUBMITTER: Nitek W 

PROVIDER: S-EPMC2983427 | biostudies-literature | 2010 Sep

REPOSITORIES: biostudies-literature

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Bis(3-methyl-phenolato-κO)(nitros-yl-κN)[tris-(3,5-dimethyl-pyrazol-1-yl-κN)hydridoborato]molybdenum(II).

Nitek Wojciech W   Romańczyk Piotr P PP   Lubera Tomasz T   Włodarczyk Andrzej J AJ  

Acta crystallographica. Section E, Structure reports online 20100911 Pt 10

The title complex, [Mo(C(15)H(22)BN(6))(C(7)H(7)O)(2)(NO)], contains an {MoNO}(4) core stabilized by κ(3)--hydrotris-(3,5-dimethyl-pyrazol-1-yl)borate, [Tp(Me2)](-), and two anionic m-cresolate ligands, leading to a distorted octa-hedral 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-Csp(2) angles [134.2 (2) and 143.54 (19)°], indicate dπ(Mo)-pπ(O) inter-actions, which are clearly weaker when compared with {Mo(NO)(Tp(Me2))} alkoxides. The  ...[more]

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