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

using model chemistry: MP2=FULL/3-21G*

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=FULL/3-21G*
 hartrees
Energy at 0K-314.266755
Energy at 298.15K 
HF Energy-313.544890
Nuclear repulsion energy209.800580
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=FULL/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3511 3328 165.76 479.64 0.31 0.48
2 A' 2185 2071 358.09 86.29 0.13 0.23
3 A' 2145 2033 51.83 65.89 0.10 0.19
4 A' 1318 1250 0.59 62.13 0.29 0.45
5 A' 785 744 697.69 19.03 0.73 0.85
6 A' 725 687 85.83 5.99 0.74 0.85
7 A' 651 617 0.90 8.16 0.12 0.21
8 A' 620 588 0.08 3.11 0.11 0.19
9 A' 481 456 34.97 1.12 0.55 0.71
10 A' 186 176 2.87 0.98 0.75 0.85
11 A' 153 145 5.89 7.27 0.73 0.84
12 A" 2161 2049 0.52 110.39 0.75 0.86
13 A" 1180 1119 0.01 6.25 0.75 0.86
14 A" 785 744 110.61 1.59 0.75 0.86
15 A" 670 636 7.44 0.40 0.75 0.86
16 A" 467 443 8.60 5.34 0.75 0.86
17 A" 454 431 1.24 0.06 0.75 0.86
18 A" 149 141 0.40 10.25 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9312.0 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 8827.8 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=FULL/3-21G*
ABC
0.09270 0.09109 0.04607

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.005 -0.049 0.000
C2 -0.005 1.297 0.000
N3 0.111 2.503 0.000
C4 -0.005 -0.766 1.240
C5 -0.005 -0.766 -1.240
N6 -0.005 -1.362 2.271
N7 -0.005 -1.362 -2.271
H8 -0.590 3.247 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 C4 C5 N6 N7 H8
C11.34572.55451.43271.43272.62362.62363.3472
C21.34571.21172.40712.40713.49723.49722.0358
N32.55451.21173.49853.49854.48504.48501.0217
C41.43272.40713.49852.48051.19093.56154.2408
C51.43272.40713.49852.48053.56151.19094.2408
N62.62363.49724.48501.19093.56154.54195.1718
N72.62363.49724.48503.56151.19094.54195.1718
H83.34722.03581.02174.24084.24085.17185.1718

picture of Dicyanoketenimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 174.534 C1 C4 N6 179.977
C1 C5 N7 179.977 C2 C1 C4 120.041
C2 C1 C5 120.041 C2 N3 H8 131.244
C4 C1 C5 119.917
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability