Skeletal structures

Synthetic fibers typically are made from linear polymers since they can be aligned and packed closely during fiber formation to achieve the desired physical stracture and properties. Branched polymer chains are hard to pack and hence they are seldom made into synthetic fibers. Network polymers do not melt or 

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A pair of stereoisomeric 1,3-cycloaddition products having the 1,2,3-triphenyloctahy-droisoindole skeletal structure (100) is formed upon photolysis of (99) in cyclohexene (68T2193). 

Rosyid, D. M. 1992 Elemental Reliability Index-Based System Design for Skeletal Structures. Structural Optimization, 4(1), 1-16. 

Epoxidised drying oils have been available for several years as stabilisers for poly(vinyl chloride). They may be considered to have the skeletal structure shown in Figure 26.17. 

Particulate composites consist of particles dispersed in a matrix. These particles are divided into two classes, skeletal and flakes. The first one consists of continuous skeletal structures filled with one or more additional materials. Flakes consist generally of flat flakes oriented parallel to each other. These particles may have any... 

Even simpler than condensed structures is the use of skeletal structures such as those shown in Table 1.3. The rules for drawing skeletal structures are straightforward. 

Table 1.3 Kekule and Skeletal Structures for Some Compounds...

ThomsonNOW Click Organic Interactive to learn how to interconvert skeletal structures, condensed structures, and molecular models. 

Propose skeletal structures for compounds that satisfy the following molecular for-i mulas. There is more than one possibility in each case. 

The following molecular model is a representation of para-aminobenzoic acid (PABA), the active ingredient in many sunscreens. Indicate the positions of the multiple bonds, and draw a skeletal structure (gray = C, red = O, blue = N, ivory - H). 

Organic molecules are usually drawn using either condensed structures or skeletal structures. In condensed structures, carbon-carbon and carbon-hydrogen bonds aren t shown. In skeletal structures, only the bonds and not the atoms are shown. A carbon atom is assumed to be at the ends and at the junctions of lines (bonds), and the correct number of hydrogens is menially supplied. 

Problem 3.14 Give the IUPAC name for the following hydrocarbon, and convert the drawing into a skeletal structure. 

Give IUPAC names for the following alkanes, and convert each drawing into a skeletal structure ... 

Glucose exists in two forms having a 36 64 ratio at equilibrium. Draw a skeletal structure of each, describe the difference between them, and tell which of the two you think is more stable (red = O) ... 

Draw a skeletal structure of the following carbocation. Identify it as primary, secondary, or tertiary, and identify the hydrogen atoms that have the proper orienta- tion for hyperconjugation in the conformation shown. 

Assign steieochemistry ( or Z) to the double bonds in each of the following compounds, and convert each drawing into a skeletal structure (red = O, ye) low-green = Cl) ... 

Skeletal structure (Section 1.12) A shorthand way of writing structures in which carbon atoms are assumed to be at each intersection of two lines (bonds) and at the end of each line. 

Single bond, electronic structure of, 14 length of, 14 see also Alkane strength of, 14 Skeletal structure, 23... 

FIGURE 14 Different skeletal structures of PCL and its copolymers derived from the polymerization of e-caprolactone using mono- and polyfunctional initiators. 

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