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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: CID/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 CID/3-21G
 hartrees
Energy at 0K-188.597061
Energy at 298.15K-188.607319
Nuclear repulsion energy130.378129
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 CID/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 3509 3269 0.00      
2 Ag 3109 2896 0.00      
3 Ag 1789 1666 0.00      
4 Ag 1589 1480 0.00      
5 Ag 1456 1357 0.00      
6 Ag 1130 1053 0.00      
7 Ag 1036 965 0.00      
8 Ag 781 728 0.00      
9 Ag 470 438 0.00      
10 Au 3601 3355 0.92      
11 Au 3167 2950 62.37      
12 Au 1453 1354 2.69      
13 Au 1124 1047 0.12      
14 Au 778 725 0.60      
15 Au 286 266 139.55      
16 Au 153 143 0.56      
17 Bg 3602 3355 0.00      
18 Bg 3138 2924 0.00      
19 Bg 1432 1334 0.00      
20 Bg 1370 1276 0.00      
21 Bg 976 910 0.00      
22 Bg 311 289 0.00      
23 Bu 3506 3266 2.14      
24 Bu 3114 2901 69.65      
25 Bu 1789 1666 42.16      
26 Bu 1606 1496 1.76      
27 Bu 1393 1297 7.43      
28 Bu 1091 1017 10.75      
29 Bu 803 748 542.31      
30 Bu 274 255 20.54      

Unscaled Zero Point Vibrational Energy (zpe) 24916.8 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 23212.5 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 CID/3-21G
ABC
0.86308 0.12218 0.11574

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.409 0.658 0.000
C2 -0.409 -0.658 0.000
N3 -0.409 1.896 0.000
N4 0.409 -1.896 0.000
H5 0.991 -1.964 0.832
H6 0.991 -1.964 -0.832
H7 -0.991 1.964 0.832
H8 -0.991 1.964 -0.832
H9 -1.056 -0.678 -0.882
H10 -1.056 -0.678 0.882
H11 1.056 0.678 -0.882
H12 1.056 0.678 0.882

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.55041.48392.55432.81212.81212.08742.08742.17062.17061.09381.0938
C21.55042.55431.48392.08742.08742.81212.81211.09381.09382.17062.1706
N31.48392.55433.87944.18974.18971.01731.01732.79672.79672.09982.0998
N42.55431.48393.87941.01731.01734.18974.18972.09982.09982.79672.7967
H52.81212.08744.18971.01731.66414.39984.70402.96332.41813.15002.6436
H62.81212.08744.18971.01731.66414.70404.39982.41812.96332.64363.1500
H72.08742.81211.01734.18974.39984.70401.66413.15002.64362.96332.4181
H82.08742.81211.01734.18974.70404.39981.66412.64363.15002.41812.9633
H92.17061.09382.79672.09982.96332.41813.15002.64361.76312.51073.0679
H102.17061.09382.79672.09982.41812.96332.64363.15001.76313.06792.5107
H111.09382.17062.09982.79673.15002.64362.96332.41812.51073.06791.7631
H121.09382.17062.09982.79672.64363.15002.41812.96333.06792.51071.7631

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 114.649 C1 C2 H9 109.130
C1 C2 H10 109.130 C1 N3 H7 111.788
C1 N3 H8 111.788 C2 C1 N3 114.649
C2 C1 H11 109.130 C2 C1 H12 109.130
C2 N4 H5 111.788 C2 N4 H6 111.788
N3 C1 H11 108.143 N3 C1 H12 108.143
N4 C2 H9 108.143 N4 C2 H10 108.143
H5 N4 H6 109.753 H7 N3 H8 109.753
H9 C2 H10 107.408 H11 C1 H12 107.408
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability