Syntheses and crystal structures of the d0,1,2 metallepins [NbR2(η-C5H5)2][BF4], [NbR2(η-C5H5)2], and [Na(18-crown-6)(thf)2][NbR2(η-C5H 5)2] (thf = tetrahydrofuran): (thf = tetrahydrofuran); reduction product of [ZrR2(η-C5H5)2][R2 = (o-CH2C6H4)22

Lutz M. Engelhardt, Wing Por Leung, Colin L. Raston, Allan H. White

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Reaction of [Nb{(o-CH2C6H4) 2}(η-C5H5)2] (1) with AgBF4 gives [Nb{(o-CH2C6H4) 2}(η-C5H5)2] [BF4] (2) and with Na[C10H8] in the presence of 18-crown-6, [Na(18-crown-6)(thf)2]-[Nb{(o-CH2C6H 4)2}(η-C5H5)2] (3) (thf = tetrahydrofuran), whereas reduction of [Zr{(o-CH2C 6H4)2}(η-C5H5) 2] results in a Zr-CH2 cleavage; single crystal X-ray structure determinations on (1), (2), and (3), show a considerable variation in Nb-CH2-C and CH2-Nb-CH2 angles, and in the torsion along the biphenyl axis, the angular changes at the niobium being in accordance with M.O. predictions [CH2-Nb-CH2, 106.3(1)° (d0); 83.0° (d1); 80(1) (d2)].

Original languageEnglish
Pages (from-to)386-388
Number of pages3
JournalJournal of the Chemical Society, Chemical Communications
Issue number7
DOIs
Publication statusPublished - 1 Apr 1983
Externally publishedYes

Fingerprint Dive into the research topics of 'Syntheses and crystal structures of the d<sup>0,1,2</sup> metallepins [NbR<sub>2</sub>(η-C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>][BF<sub>4</sub>], [NbR<sub>2</sub>(η-C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>], and [Na(18-crown-6)(thf)<sub>2</sub>][NbR<sub>2</sub>(η-C<sub>5</sub>H <sub>5</sub>)<sub>2</sub>] (thf = tetrahydrofuran): (thf = tetrahydrofuran); reduction product of [ZrR2(η-C5H5)2][R2 = (o-CH2C6H4)22'. Together they form a unique fingerprint.

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