Read e-book online Contemporary Boron Chemistry (Special Publications) PDF

By M. Davidson, A.K. Hughes, T.B. Marder, K. Wade

ISBN-10: 0854048359

ISBN-13: 9780854048359

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To account for the Zr-D (b) after heating UD Figure 3 2HM spectra of CPJ~DC(P-D)PCJ$in toluene (a) before heating. (b) after heating at 85 “c for 10 min. Scheme II Possible mechanism for the hydrogen exchange of CPJrfV(P-H)PCPJ Applications to Polyolejn Catalysis 33 exchange of the terminal hydride, a s i d e hydrogen bridge intermediate with one broken B-H, bond is proposed. The exchange of the Cp hydrogens with terminal hydride and bridge hydrogens might involve rearrangement of the bonding of the Cp rings to zirconium, proceeding through qS4q1+q5bonding modes.

1996, 68, 1495. (e) R K. Perkins, R. A. Rosenberg, S. Lee, P. A. Dowben, J Appl. , 1991,69,4103. 3. (a) M. F. Hawthorne, Angew. , Int. , 1993, 32, 950. (b) H. M. Colquhoun, P. L. Herbertson, K. Wade, I. Baxter, D. J. Williams, Macromolecules, 1998, 31, 1694. (c) C. Mazal, A. J. Paraskos, J. Michl, J Org. , 1998, 63, 21 16. 4. (a) K. Base, M. T. Tierney, A. Fort, J. Muller, M. W. Grinstaff, Inorg. , 1999, 38,287. (b) W. Fendrich, J. E. Harvey, P. Kaszynski, Inorg. , 1999,38,408. 5. (a) A. G. Douglass, K.

350 , . 0% and using spin-coating technique to fabricate a firstgeneration LED device. Shown in Figure 5 is the green EL and PL spectra of 3% 3c in PVK along with a schematic illustration of the device. The PL and EL spectra of the blend system are essentially identical. The PL maximum is at about 530 nm for the blend system and is red- shifted by about 110 nm fiom the PL maximum for pure 3c, indicating that the emissive state of the blend system is different fiom the LUMO of 3c. The contribution to EL ftom the PVK is seen at 410 nm for low blending concentrations.

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Contemporary Boron Chemistry (Special Publications) by M. Davidson, A.K. Hughes, T.B. Marder, K. Wade


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