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

using model chemistry: MP2/CEP-121G*

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/CEP-121G*
 hartrees
Energy at 0K-52.474601
Energy at 298.15K 
HF Energy-51.487143
Nuclear repulsion energy100.136669
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/CEP-121G*
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' 3522 3356 105.54 436.79 0.31 0.47
2 A' 2142 2041 49.32 262.61 0.10 0.17
3 A' 2084 1985 395.38 15.66 0.49 0.65
4 A' 1310 1248 8.79 55.08 0.22 0.37
5 A' 865 825 555.62 28.47 0.51 0.68
6 A' 638 608 0.66 15.25 0.09 0.16
7 A' 561 535 0.53 0.15 0.70 0.82
8 A' 523 499 3.95 8.38 0.62 0.76
9 A' 413 394 27.24 2.60 0.23 0.38
10 A' 159 151 5.22 0.67 0.73 0.85
11 A' 127 121 7.00 8.19 0.73 0.84
12 A" 2147 2046 0.97 167.33 0.75 0.86
13 A" 1204 1147 2.16 10.67 0.75 0.86
14 A" 745 710 99.15 1.61 0.75 0.86
15 A" 607 579 1.74 0.16 0.75 0.86
16 A" 370 353 6.10 3.98 0.75 0.86
17 A" 361 344 0.26 1.15 0.75 0.86
18 A" 126 120 0.00 10.32 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8951.9 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 8529.4 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/CEP-121G*
ABC
0.09139 0.09122 0.04583

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.018 -0.054 0.000
C2 -0.018 1.296 0.000
N3 0.182 2.507 0.000
C4 -0.018 -0.767 1.252
C5 -0.018 -0.767 -1.252
N6 -0.018 -1.354 2.287
N7 -0.018 -1.354 -2.287
H8 -0.607 3.161 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 C4 C5 N6 N7 H8
C11.35042.56861.44101.44102.63042.63043.2684
C21.35041.22672.41372.41373.50033.50031.9554
N32.56861.22673.51083.51084.49144.49141.0249
C41.44102.41373.51082.50451.18943.58744.1646
C51.44102.41373.51082.50453.58741.18944.1646
N62.63043.50034.49141.18943.58744.57385.0948
N72.63043.50034.49143.58741.18944.57385.0948
H83.26841.95541.02494.16464.16465.09485.0948

picture of Dicyanoketenimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 170.646 C1 C4 N6 179.892
C1 C5 N7 179.892 C2 C1 C4 119.659
C2 C1 C5 119.659 C2 N3 H8 120.295
C4 C1 C5 120.683
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability