Journalartikel

Jahr der Veröffentlichung: 2004

Seiten: 4902-4909

Zeitschrift: Organometallics

Bandnummer: 23

Heftnummer: 21

ISSN: 0276-7333

eISSN: 1520-6041

DOI Link: https://doi.org/10.1021/om049554r

Verlag: American Chemical Society

Abstract: 
With the aim of synthesis of chiral-at-metal complexes with NLO properties, the reaction of ynamines 2a,b with the eta(1)-vinylidene complexes (eta(1)-C5H5)(CO)(NO)W=C=(H)R (R = C6H5 (1), C(CH3)(3) (6), H (8)) was investigated. It has been shown that the substituent R on the eta(1)-vinylidene complex determines the outcome of the reaction. Whereas the reaction of 2a,b with complex 1 gave rise to the expected cyclobutenylidene complexes 4a,b and 5a,b, the reaction of ynamines with complexes 6 yielded the aminocarbene complexes 7a,b and the reaction of eta(1)-vinylidene complexes 8 gave rise to a mixture of compounds 9 and 10. The mechanism of formation of these complexes was investigated. Single-crystal X-ray diffraction data of 4a, 7a, and 9 are reported. Complex 4a is composed of a strong electron-donating and accepting group conjugated via double bonds of a cyclobutenylidene unit. Hence, the first hyperpolarizability beta was determined by hyper-Rayleigh scattering measurements with a stimulating laser beam at lambda = 1500 nm. A first hyperpolarizability of beta = 105 x 10(-30) esu was determined.

Harvard-Zitierstil: Ipaktschi, J., Mohseni-Ala, J., Dülmer, A., Steffens, S., Wittenburg, C. and Heck, J. (2004) Addition of ynamines to the tungsten η¹-vinylidene complexes (η⁵-C₅H₅)(NO)(CO)W=C=C(H)R, Organometallics, 23(21), pp. 4902-4909. https://doi.org/10.1021/om049554r

APA-Zitierstil: Ipaktschi, J., Mohseni-Ala, J., Dülmer, A., Steffens, S., Wittenburg, C., & Heck, J. (2004). Addition of ynamines to the tungsten η¹-vinylidene complexes (η⁵-C₅H₅)(NO)(CO)W=C=C(H)R. Organometallics. 23(21), 4902-4909. https://doi.org/10.1021/om049554r