Geometry phosphorus

Compare geometries, atomic charges and electrostatic potential maps of thionyl chloride and phosphorus trichloride. How are they similar How are they different Can you redraw the Lewis structure of SOCI2 so that it gives abetter description of the electrostatic potential map ... 

Retrosynthetic cleavage of the trans A8,9 disubstituted double bond in intermediate 11, the projected precursor of diketone 10, provides phosphorus ylide 12 and aldehyde 13 as potential precursors. In the forward sense, a Wittig reaction could conceivably achieve a convergent coupling of intermediates 12 and 13 with concomitant formation of the requisite trans C8-C9 olefin. Ordinarily, the union of a nonstabilized ylide, such as 12, with an aldehyde would be expected to afford an alkene with a cis geometry.8 Fortunately, however, the Schlosser modification of the Wittig reaction permits the construction of trans olefins from aldehydes and nonstabilized phosphorus ylides.9... 

Chirality is an important part of today s chemistry and, in this respect, the pseudo-octahedral geometry of hexacoordinated phosphorus derivatives is interesting as it suffices to coordinate to the central atom three identical sym-... 

Unlike the geometries for other steric numbers, the five positions in a trigonal bipyramld are not all equivalent, as shown in Figure 9-21a. Three positions lie at the comers of an equilateral triangle around the phosphorus atom, separated by 120° bond angles. Atoms in the trigonal plane are In equatorial positions. The other two positions... 

C21-0015. Figure 21-11 highlights the triangular arrangement of phosphorus atoms in P4 Oio. As every P atom bonds to four O atoms, however, the geometry about each P atom is tetrahedral, just as in the phosphate anion. Redraw Figure 21-11 in a way that highlights one of the tetrahedral PO4 units. 

Fig. 15. Thermal ellipsoidal plot80 of r-Bu2GaP(Mes )SiPh, showing the flattened nature of phosphorus geometry and the alignment between the gallium p-orbital and the phosphorous lone pair. [Reprinted with permission from Petrie, Ruhlandt-Senge, and Power.79 Copyright 1992 American Chemical Society.]...

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