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ERIC Number: EJ1441748
Record Type: Journal
Publication Date: 2022-May
Pages: 8
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0021-9584
EISSN: EISSN-1938-1328
Available Date: N/A
Cp[subscript 2]TiCI[subscript 2]: Synthesis, Characterization, Modeling and Catalysis
Journal of Chemical Education, v99 n5 p2121-2128 2022
As an alternative to the traditional metallocene laboratory targets, students synthesize Cp[subscript 2]TiCl[subscript 2], bis([eta][superscript 5]-cyclopentadienyl)dichloridotitanium(IV), from the mildly moisture-sensitive cis-TiCl[subscript 4](thf)[subscript 2]. Air-free handling techniques are emphasized, but the (mostly) air-stable, diamagnetic product is then easily characterized by NMR spectroscopy as well as mass spectrometry and infrared (IR) spectroscopy. This student-generated product is then used as (1) a starting material in the production of the difluoride analogue, Cp[subscript2]TiF[subscript 2], and (2) a catalyst for "in situ" formation of allyl zinc bromide for use in a simple, model Barbier reaction. An additional supplement is also included in which students model the title compound with varying hapticities of the cyclopentadienyl rings. These data are aligned with experimental NMR and IR spectra to support and explain students' findings.
Division of Chemical Education, Inc. and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A
Author Affiliations: N/A