Chem. Planarization

Figure 9.46 Rotational structure of the Ojj bands in the fluorescence excitation spectra of s-tetrazine dimers at about 552 run. Bottom Ojj band of planar dimer. Middle Ojj band of T-shaped dimer with transition in monomer unit in stem of T. Top Ojj band of T-shaped dimer with transition in monomer unit in top of T. (Reproduced, with permission, from Haynam, C. A., Brumbaugh, D. V and Levy, D. H., J. Chem. Phys., 79, f58f, f983)...

Fig. 1.9. Total energy as a function of distortion from planarity for methyl cation, methyl radical, and methyl anion. [Reproduced from J. Am. Chem. Soc. 98 6483 (1976) by permission of the American Chemical Society.]...

Chem. 23, 770-4 (1994) this also describes the synthesis and structure of [K(crypt)] 2[Sb4] which features the square planar [864] anion with Sb-Sb 275 pm. 

The intimate mechanism of replacement in ds square planar complexes. L. Cattalini, Prog. Inorg. Chem., 1970,13, 263-327 (139). 

Solvent paths and dissociate intermediates in substitution reactions of square planar complexes. R. J. Mureinik, Coord. Chem. Rev., 1978, 25,1-30 (133). 

Splitting of d-orbitals in square planar complexes of copper(II), nickel(II) and cobalt(II). Y. Nishida andS. Kida, Coord. Chem. Rev., 1979, 27, 275-298 (94). 

An investigation of the chelate effect the binding of bidentate phosphine and arsine chelates in square-planar transition metal complexes. D. M. A. Minahan, W. E. Hill and C. A. McAuliffe, Coord. Chem. Rev., 1984, 55, 31-54 (153). 

Planar complexes containing metal-metal bonds. K. Krogmann, Angew. Chem., Int. Ed. Engl.,... 

Ellison, G.B. Engelking, PC. Lineberger, W.C. J. Am. Chem. Soc., 1978, 100, 2556. Retention of configuration has never been observed with simple carbanions. Cram has obtained retention with carbanions stabilized by resonance. However, these carbanions are known to be planar or nearly planar, and retention was caused by asymmetric solvation of the planar carbanions (see p. 764). 

Huang H, Peters R (2009) A highly strained planar chiral platinacycle for catalytic activation of internal olefins in the Eriedel-Crafts alkylation of indoles. Angew Chem Int Ed 48 604-606... 

Fu GC (2006) Application of planar-chiral heterocycles as ligands in asymmetric catalysis. Acc Chem Res 39 853-860... 

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Tao B, Ruble JC, Hole DA, Fu GC (1999) Nonenzymatic kinetic resolution of propargylic alcohols by a planar-chiral DMAP Derivative crystallographic characterization of the acylated catalyst. J Am Chem Soc 121 5091-5092... 

Ruble JC, Fu GC (1998) Enantioselective construction of quaternary stereocenters rearrangements of 0-acylated azlactones catalyzed by a planar-chiral derivative of 4-(pyrrolidino) pyridine. J Am Chem Soc 120 11532-11533... 

Bappert E, Mueller P, Fu GC (2006) Asymmetric [3 -i- 2] annulations catalyzed by a planar-chiral derivative of DMAP. Chem Commun 2604—2606... 

Tao B, Lo MMC, Fu GC (2001) Planar-chiral pyridine N-oxides, a new family of asymmetric catalysts exploiting an rj -CsArs ligand to achieve high enantioselectivity. J Am Chem Soc 123 353-354... 

Verbrugge MW, Tobias CW (1985) Triangular current-sweep chronopotentiometry at rotating disk and stationary, planar electrodes. J Electroanal Chem 196 243-259... 

Schneider A, Colmenaies L, Seidel YE, Jusys Z, Wickman B, Kasemo B, Behm RJ. 2008. Transport effects in the oxygen reduction reaction on nanostructuied, planar glassy carbon supported Pt/GC model electrodes. Phys Chem Chem Phys 10 1931-1943. 

Shi, Y. Wan, P. Photocyclization of a l,l -bisnaphthalene planarization of a highly twisted biaryl system after excited state ArOH dissociation. J. Chem. Soc., Chem. Commun. 1997, 273-274. 

G. D. Moggridge, J. P. S. Badyal and R. M. Lambert, X-ray photoelectron spetroscopic characterisation of oxygen surface species on a doubly promoted manganese oxide model planar catalyst significance for CH4 coupling, J. Phys. Chem., 1990, 94, 508. 

Fig. 8. Electronic absorption spectra of some planar square Pt(II) complexes of chloride and ammonia in aqueous solution (from Chatt, J., Gamlen, G. A., Orgel, L. E. J. Chem. Soc. 486 (1958))...

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