Structure Data of Free Polyatomic Molecules 348 MW C 3H 2N 2 a Propanedinitrile Malononitrile C2v H H r0 C–H C–C C≡N Å 1.086(2) 1.466(9) 1.152(13) H–C–H C–C–C C–C≡N θ0 deg 103.7(4) 112.6(7) 178.7(8) rIε C–H C–C C≡N Å 1.099(3) 1.467(8) 1.150(8) θIε H–C–H C–C–C C–C≡N deg 106.8(6) 112.7(5) 178.7(6) rs C–H C–C C≡N Å 1.100(10) 1.452(13) 1.159(9) θs H–C–H C–C–C C–C≡N deg 106.9(11) 112.9(11) 179.1(8) r ρm C–H C–C C≡N Å 1.089(4) 1.458(4) 1.157(4) θ ρm H–C–H C–C–C C–C≡N deg 106.4(6) 112.8(2) 178.4(2) re C–H C–C C≡N Å a) 1.091(5) 1.464(6) 1.155(5) θe H–C–H C–C–C C–C≡N deg a) 107.82(6) 111.98(9) 178.88(9) N C C N ) Uncertainties were not estimated in the original paper. Demaison, J., Wlodarczak, G., Rück, H., Wiedenmann, K.H., Rudolph, H.D.: J. Mol. Struct. 376 (1996) 399. Replaces II/25C (3, 1068) Landolt-Börnstein New Series II/28C
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