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All results from a given calculation for HN=C=C(CN)2 (Dicyanoketenimine)

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-316.470345
Energy at 298.15K 
HF Energy-315.345055
Nuclear repulsion energy211.532333
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3602 3402 168.48 377.16 0.31 0.47
2 A' 2216 2093 49.25 205.25 0.11 0.19
3 A' 2167 2046 415.62 5.68 0.49 0.66
4 A' 1337 1263 2.32 51.95 0.24 0.39
5 A' 803 758 540.80 16.74 0.53 0.69
6 A' 654 618 1.08 13.98 0.09 0.17
7 A' 595 562 17.82 4.63 0.60 0.75
8 A' 579 547 0.24 0.34 0.51 0.68
9 A' 447 423 41.29 2.49 0.39 0.56
10 A' 172 163 6.89 0.46 0.73 0.84
11 A' 132 125 8.73 7.09 0.73 0.84
12 A" 2221 2097 2.72 144.62 0.75 0.86
13 A" 1226 1158 0.33 8.30 0.75 0.86
14 A" 748 707 85.67 1.30 0.75 0.86
15 A" 625 590 2.40 0.32 0.75 0.86
16 A" 406 383 6.18 3.43 0.75 0.86
17 A" 387 365 0.32 0.16 0.75 0.86
18 A" 128 121 0.02 9.13 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9221.6 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 8709.8 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2/6-31G(2df,p)
ABC
0.09377 0.09300 0.04685

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.010 -0.059 0.000
C2 -0.010 1.278 0.000
N3 0.143 2.477 0.000
C4 -0.010 -0.759 1.240
C5 -0.010 -0.759 -1.240
N6 -0.010 -1.335 2.266
N7 -0.010 -1.335 -2.266
H8 -0.624 3.142 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 C4 C5 N6 N7 H8
C11.33752.54031.42381.42382.59992.59993.2598
C21.33751.20792.38502.38503.45843.45841.9625
N32.54031.20793.46843.46844.43644.43641.0157
C41.42382.38503.46842.47981.17613.55244.1395
C51.42382.38503.46842.47983.55241.17614.1395
N62.59993.45844.43641.17613.55244.53115.0550
N72.59993.45844.43643.55241.17614.53115.0550
H83.25981.96251.01574.13954.13955.05505.0550

picture of Dicyanoketenimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 172.714 C1 C4 N6 179.858
C1 C5 N7 179.858 C2 C1 C4 119.444
C2 C1 C5 119.444 C2 N3 H8 123.672
C4 C1 C5 121.113
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability