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real9527

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1. Abstract and Comment.  I do not believe that the purported intramolecular C--H...O interaction has any structural importance (the angle around H is much too small).  Delete all references to this.  The bifurcated R^1^~2~(6) motif involving O2, H3A and H7A is more interesting, but you do not mention this (you should do so).  More information is needed about pi...pi interactions.  Are they edge-face or face-face? If edge-face, then what is the C-H pointing at?  Centre of the ring?  C=C?  Allyl fragment?  Butadiene fragment?  If face-face, then what is the slippage as well as the centroid-centroid distance?

3.  Redraw Figure 2 using only those H atoms involved in C--H...O interactions.  The picture will be much clearer and will show that a hydrogen-bonded ribbon is formed by the R^1^~2~(6) motif.
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ljmmarise

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2Â¥2012-07-31 21:31:36
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real9527

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3Â¥2012-07-31 21:35:21
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huangpeking

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real9527: ½ð±Ò+10, ¡ïÓаïÖú, ºÜÊǸÐл 2012-08-09 16:50:38
1. Abstract and Comment.  I do not believe that the purported intramolecular C--H...O interaction has any structural importance (the angle around H is much too small).  Delete all references to this.  The bifurcated R^1^~2~(6) motif involving O2, H3A and H7A is more interesting, but you do not mention this (you should do so).  More information is needed about pi...pi interactions.  Are they edge-face or face-face? If edge-face, then what is the C-H pointing at?  Centre of the ring?  C=C?  Allyl fragment?  Butadiene fragment?  If face-face, then what is the slippage as well as the centroid-centroid distance?

3.  Redraw Figure 2 using only those H atoms involved in C--H...O interactions.  The picture will be much clearer and will show that a hydrogen-bonded ribbon is formed by the R^1^~2~(6) motif.
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4Â¥2012-08-01 07:34:43
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xiongzhifang

Í­³æ (СÓÐÃûÆø)

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real9527: ½ð±Ò+8, ¡ïÓаïÖú, ºÜÊǸÐл 2012-08-09 16:50:59
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5Â¥2012-08-01 10:59:25
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hqzhang

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6Â¥2012-08-01 11:28:18
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linhua0402313: ¸Ðл²ÎÓë»ØÌû½»Á÷ 2012-08-01 12:39:46
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shidabin

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real9527

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