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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: MP2=FULL/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-189.936826
Energy at 298.15K-189.947206
HF Energy-189.288533
Nuclear repulsion energy131.413287
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/cc-pVDZ
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 3500 3327 0.00      
2 Ag 3069 2916 0.00      
3 Ag 1661 1579 0.00      
4 Ag 1483 1409 0.00      
5 Ag 1408 1338 0.00      
6 Ag 1159 1101 0.00      
7 Ag 1110 1054 0.00      
8 Ag 899 854 0.00      
9 Ag 470 446 0.00      
10 Au 3594 3416 0.00      
11 Au 3142 2986 67.69      
12 Au 1411 1341 3.37      
13 Au 1086 1032 0.66      
14 Au 768 730 0.30      
15 Au 299 284 101.96      
16 Au 158 150 0.29      
17 Bg 3595 3417 0.00      
18 Bg 3117 2963 0.00      
19 Bg 1386 1318 0.00      
20 Bg 1310 1245 0.00      
21 Bg 959 912 0.00      
22 Bg 335 319 0.00      
23 Bu 3500 3326 1.59      
24 Bu 3074 2922 85.24      
25 Bu 1659 1577 35.87      
26 Bu 1499 1425 0.53      
27 Bu 1331 1265 33.61      
28 Bu 1126 1070 6.53      
29 Bu 945 898 334.75      
30 Bu 275 261 17.86      

Unscaled Zero Point Vibrational Energy (zpe) 24662.4 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 23439.1 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/cc-pVDZ
ABC
0.87022 0.12499 0.11815

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.397 0.656 0.000
C2 -0.397 -0.656 0.000
N3 -0.397 1.886 0.000
N4 0.397 -1.886 0.000
H5 1.026 -1.859 0.808
H6 1.026 -1.859 -0.808
H7 -1.026 1.859 0.808
H8 -1.026 1.859 -0.808
H9 -1.061 -0.674 -0.884
H10 -1.061 -0.674 0.884
H11 1.061 0.674 -0.884
H12 1.061 0.674 0.884

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.53451.46402.54202.71512.71512.03052.03052.16302.16301.10551.1055
C21.53452.54201.46402.03052.03052.71512.71511.10551.10552.16302.1630
N31.46402.54203.85434.08624.08621.02381.02382.78832.78832.09202.0920
N42.54201.46403.85431.02381.02384.08624.08622.09202.09202.78832.7883
H52.71512.03054.08621.02381.61594.24544.54252.93592.40053.04602.5340
H62.71512.03054.08621.02381.61594.54254.24542.40052.93592.53403.0460
H72.03052.71511.02384.08624.24544.54251.61593.04602.53402.93592.4005
H82.03052.71511.02384.08624.54254.24541.61592.53403.04602.40052.9359
H92.16301.10552.78832.09202.93592.40053.04602.53401.76802.51423.0736
H102.16301.10552.78832.09202.40052.93592.53403.04601.76803.07362.5142
H111.10552.16302.09202.78833.04602.53402.93592.40052.51423.07361.7680
H121.10552.16302.09202.78832.53403.04602.40052.93593.07362.51421.7680

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 115.922 C1 C2 H9 108.950
C1 C2 H10 108.950 C1 N3 H7 108.106
C1 N3 H8 108.106 C2 C1 N3 115.922
C2 C1 H11 108.950 C2 C1 H12 108.950
C2 N4 H5 108.106 C2 N4 H6 108.106
N3 C1 H11 108.201 N3 C1 H12 108.201
N4 C2 H9 108.201 N4 C2 H10 108.201
H5 N4 H6 104.221 H7 N3 H8 104.221
H9 C2 H10 106.188 H11 C1 H12 106.188
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability