Orgel

Orgel diagrams Simple graphs showing the relation between the energies of various electronic slates and the crystal field splitting. 

Results of quantum-mechanical calculations (Dunitz and Orgel, 1957) have given values for the OSPEs of a number of transitional metal ions and the degree of inversion of mixed spinels... 

Cyclobutadiene-transition metal complexes predicted by H. C. Longuet-Higgins and L. E. Orgel 3 y before they... 

Cyclobutadiene complexes afford a classic example of the stabilization of a ligand by coordination lo a metal and, indeed, were predicted theoretically on this basis by H. C. Longuei-Higgins and L, E, Orgel (1956) some 3y before the first examples were synthesized, In the (hypothetical) free cyclobutadiene molecule 2 of the 4 rr-electrons would occupy t /i and there would be an unpaired electron m each of the 2 degenerate oibilals 2, Coordination to a metal provides funhei interactions and avoids this unstable configuration, See also the discussion on ferra-boranes (p. 174). 

Orgel,/. organ, -metall, n. organ-pipe metal, orientalisch, a. Oriental, orientieren, v.t. orient. 

The information in Section 3.9 and Section 3.10, referring to the crystal-field splittings of ground terms and all terms of the same spin multiplicity, can be very neatly encapsulated within two famous diagrams due to Orgel. Somewhat analogous. 

Figure 3-21. Orgel diagram for energies of octahedral or tetrahedral terms arising from free-ion D terms.

Stagnone GJ, Orgel MB, Stagnone JJ (1987) Cardiovascular effects of topical 50% trichloroacetic acid and Baker s phenol solution. J Dermatol Surg Oncol 13 999-1002... 

Schmidt J.G., Nielsen P.E., Orgel L. E. Information transfer from peptide nucleic acids to RNA by template-directed syntheses. Nucleic Acids Res. 1997 25 4797- 802. 

Brack A, Orgel LE (1975) Beta-structures of alternating polypeptides and their possible prebiotic significance. Nature 256 383-387... 

L. E. Orgel, An Introduction to Transition Metal Ion Chemistry. Ligand Field Theory,... 

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