What are the resonant structures for cyanamide, H2NCN?

Question

anonymous · Answer

H               H     H                                           H
  \            /         \           ,,                           /
    N=C=N             N=C=N        :N(triple)C-N:
    ''        ''              ''          \                          \
                                           H                         H

anonymous · Answer

When I look these up, I can't find the first one. I'm assuming that the C=N bonds make this molecule unable to turn, so that the first structure is a correct resonant structure?