CHEM301 F10 CA1key

CHEM301 F10 CA1key - CHEM301 Fall 2010 Dr Ruder 1 Class Activity 1key Drawing Organic Structures Organic structures can be drawn in different ways

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CHEM301, Fall 2010 Dr. Ruder 1 Class Activity 1 key Drawing Organic Structures Organic structures can be drawn in different ways to show the same compound. Model 1: Representing Organic Structures The three main ways of representing organic structures in two dimensions are shown below. Lewis Condensed Line-angle (skeletal) C H H H C H Br C H H H CH 3 CHBrCH 3 or CH 3 CHCH 3 Br Br C H H H C H H C H H C H H OH CH 3 (CH 2 ) 2 CH 2 OH OH C H H H C O C H H H or CH 3 CCH 3 O CH 3 COCH 3 O C C H C H C H H H C C C C H H H H H H H H H C 5 H 9 CH 2 CHCH 2 or C 5 H 9 CH 2 CH=CH 2 Questions: 1. (a). How are bonds represented in the Lewis structures? As a line. (b). Are all bonds to every atom in the Lewis structures shown? yes 2. (a). How do condensed structures differ from Lewis structures? (b). Are all bonds to every atom in the condensed structures shown? no
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CHEM301, Fall 2010 Dr. Ruder 2 (c). In the condensed structures reading left to right, which atom always appears first (on the left)? Carbon . Which atom always follows this first atom? Hydrogen (d). What atoms can be drawn above or below the single line of atoms of the condensed structure? Heteroatoms (O, N, Br, Cl etc) (e). In the last entry in the table, how is the five membered ring represented in the condensed structure? As a formula. (f).
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This note was uploaded on 04/30/2011 for the course CHEM 301 taught by Professor Sahli during the Spring '07 term at VCU.

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CHEM301 F10 CA1key - CHEM301 Fall 2010 Dr Ruder 1 Class Activity 1key Drawing Organic Structures Organic structures can be drawn in different ways

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