MU Chemistry 416 FS97

Literature List on Shielding II
Non-Local Contributions


Aromatic Ring Currents Illustrated - NMR Spectra of Tin(IV) Porphyrin Complexes. Arnold, D. P. J. Chem. Educ. 1988, 65, 1111-1112.
A very nice example to illustrate the additional shielding on top of an aromatic ring system.

Diodelike Current-Voltage Curves for a Single Molecule-Tunneling Spectroscopy with Submolecular Resolution of an Alkylated, peri-Condensed Hexabenzocoronene. Stable, A.; Herwig, P.; Muellen, K.; Rabe, J. P. Angew. Chem. Int. Ed. Engl. 1995, 15, 1609-1611.
Muellen prepares alkylated peri-condensed hexabenzocoronenes which are soluable so that NMR data can be recorded.

Corannulene. A Convenient New Synthesis. Scott, L. T.; Hashemi, M. M.; Meyer, D. T.; Warren, H. B. J. Am. Chem. Soc. 1991, 113, 7082-7084.
Describes Scott's synthesis of corannulene and the C-NMR.

Corannulene Tetraanion: A Novel Species with Concentric Aromatic Rings. Ayalon, A.; Rabinowitz, M.; Cheng, P.-C.; Scott, L. T. Angew. Chem. Int. Ed. Engl. 1992, 31, 1636-1637.
Describes synthesis and properties of the corannulene tetraanion as discussed in lecture.

Corannulene Reduction: Spectroscopic Detection of All Anionic Oxidation States. Baumgarten, M.; Gherghel, L.; Wagner, M.; Weitz, A.; Rabinowitz, M.; Cheng, P.-C.; Scott, L. T. J. Am. Chem. Soc. 1996, 117, 6254-6257.
Describes the H-deshielding and inner C-shielding in corannulene dianion as discussed in lecture.

Zur Konjugation in Makrocyclischen Bindungssystemen XX. Characterordnung, magnetische Susceptibilitaeten und chemische Verschiebungen von Corannulenen. Ege, G.; Vogler, H. Theoret. Chim. Acta 1972, 26, 55-56.
The PAH numbers discussed in lecture come from here. Note that these people made a prediction about corannulene many years before its synthesis. How are they doing?

Synthesis and Characterization of a C36H12 Fullerene Subunit. Scott, L. T.; Bratcher, M. S.; Hagen, S. J. Am. Chem. Soc. 1996, 118, 8743-8744.
A nice example to illustrate ring current in extended bowl-shaped systems. Discussed in lecture.