AL chem structure of HN3

Structure of Hydrazoic acid should be like this
　

圖片參考：http://wtt-pro.nist.gov/images/7782798.gif

　
or (see right side)
　

圖片參考：http://131.104.156.23/Lectures/231/231%20pictures/azides-II.gif

　
or
　

圖片參考：http://www.enotes.com/w/images/thumb/a/a8/Hydrogen-azide-2D-dimensions.png/200px-Hydrogen-azide-2D-dimensions.png

　
　
References:
http://131.104.156.23/Lectures/231/231_nitrogen-group.htm
http://wtt-pro.nist.gov/cgi-bin/openindex.cgi?cid=7782798
http://www.enotes.com/topic/Hydrazoic_acid