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All results from a given calculation for HNCCNH (Ethenediimine)

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 C2H 1AG
Energy calculated at MP2=FULL/3-21G*
 hartrees
Energy at 0K-185.034920
Energy at 298.15K 
HF Energy-184.623245
Nuclear repulsion energy88.391696
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
4/u)
Dep P Dep U
1 Ag 3241 3073 0.00 779.73 0.31 0.48
2 Ag 2137 2026 0.00 27.55 0.37 0.54
3 Ag 1190 1128 0.00 56.87 0.74 0.85
4 Ag 906 859 0.00 12.28 0.24 0.39
5 Ag 309 292 0.00 2.89 0.31 0.47
6 Au 980 929 139.16 0.00 0.75 0.86
7 Au 276 262 0.36 0.00 0.75 0.86
8 Bg 734 696 0.00 5.12 0.75 0.86
9 Bu 3245 3076 2.55 0.00 0.31 0.48
10 Bu 1678 1591 34.62 0.00 0.00 0.00
11 Bu 1118 1060 573.12 0.00 0.00 0.00
12 Bu 284 270 9.84 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 8048.4 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 7629.9 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
9.58896 0.13848 0.13651

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.225 -0.609 0.000
C2 -0.225 0.609 0.000
N3 0.225 -1.875 0.000
N4 -0.225 1.875 0.000
H5 1.169 -2.312 0.000
H6 -1.169 2.312 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6
C11.29811.26592.52411.94723.2362
C21.29812.52411.26593.23621.9472
N31.26592.52413.77641.04064.4125
N42.52411.26593.77644.41251.0406
H51.94723.23621.04064.41255.1811
H63.23621.94724.41251.04065.1811

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