Tris(phenylimido) complexes of niobium and tantalum: Preparation and properties of the d[sup 0] [M([double bond]NR)[sub 3]][sup [minus]] (M + Nb, Ta) functional group

Journal Article · Wed Apr 15 04:00:00 EDT 1992 · Inorganic Chemistry; (United States)

DOI:https://doi.org/10.1021/ic00034a006· OSTI ID:7181016

Smith, D P; Allen, K D; Carducci, M D; Wigley, D E ^[1]

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1. Univ. of Arizona, Tucson (United States)

The preparation of the d[sup 0] tris(imido) functional groups of niobium and tantalum, [Nb([double bond]NR)[sub 3]][sup [minus]] and [Ta([double bond]NR)[sub 3]][sup [minus]], is reported. [Nb(NEt[sub 2])[sub 2]Cl[sub 3]][sub 2] reacts with excess LiNHmes (mes = 2,4,6-C[sub 6]H[sub 2]Me[sub 3]) in THF to afford [Li(THF)[sub 2]][sub 2]-[Nb([double bond]Nmes)[sub 3](NHmes)]; the tantalum analogue is prepared similarly. Experiments suggest the [Nb([double bond]NR)[sub 3]]- group arises via an intermolecular deprotonation of [Nb([double bond]NR)[sub 2](NHR)[sub 2]][sup [minus]]. [Li(THF)[sub 2]][sub 2][Nb([double bond]Nmes)[sub 3](NHmes)] reacts with [sup n]BuLi to form the substitution product [Li(THF)[sub 2]][sub 2][Nb([double bond]Nmes)[sub 3]([sup n]Bu)], which has been examined crystallographically.

• OSTI ID: 7181016
• Journal Information: Inorganic Chemistry; (United States), Journal Name: Inorganic Chemistry; (United States) Vol. 31:8; ISSN 0020-1669; ISSN INOCAJ
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
BOND LENGTHS
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
COHERENT SCATTERING
COMPLEXES
DIFFRACTION
DIMENSIONS
IMIDES
KINETICS
LENGTH
LIGANDS
MOLECULAR STRUCTURE
NIOBIUM COMPLEXES
NMR SPECTRA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PRECURSOR
REACTION KINETICS
SCATTERING
SPECTRA
SYNTHESIS
TANTALUM COMPLEXES
TRANSITION ELEMENT COMPLEXES
X-RAY DIFFRACTION