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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: HF/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at HF/daug-cc-pVTZ
 hartrees
Energy at 0K-189.353577
Energy at 298.15K-189.363948
HF Energy-189.353577
Nuclear repulsion energy132.629299
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 HF/daug-cc-pVTZ
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 3722 3367 0.00      
2 Ag 3152 2851 0.00      
3 Ag 1794 1623 0.00      
4 Ag 1608 1454 0.00      
5 Ag 1535 1389 0.00      
6 Ag 1184 1071 0.00      
7 Ag 1136 1028 0.00      
8 Ag 879 795 0.00      
9 Ag 491 444 0.00      
10 Au 3800 3437 5.22      
11 Au 3201 2896 96.85      
12 Au 1502 1359 0.21      
13 Au 1144 1035 0.46      
14 Au 812 734 0.17      
15 Au 261 236 98.62      
16 Au 155 140 0.20      
17 Bg 3801 3438 0.00      
18 Bg 3169 2867 0.00      
19 Bg 1480 1338 0.00      
20 Bg 1405 1271 0.00      
21 Bg 1008 912 0.00      
22 Bg 289 262 0.00      
23 Bu 3721 3366 2.52      
24 Bu 3157 2856 106.45      
25 Bu 1794 1622 57.53      
26 Bu 1624 1469 1.36      
27 Bu 1446 1308 23.94      
28 Bu 1151 1041 42.76      
29 Bu 917 829 379.48      
30 Bu 302 273 17.90      

Unscaled Zero Point Vibrational Energy (zpe) 25817.9 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 23354.9 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 HF/daug-cc-pVTZ
ABC
0.89288 0.12645 0.11967

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/daug-cc-pVTZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.398 0.652 0.000
C2 -0.398 -0.652 0.000
N3 -0.398 1.865 0.000
N4 0.398 -1.865 0.000
H5 0.984 -1.921 0.806
H6 0.984 -1.921 -0.806
H7 -0.984 1.921 0.806
H8 -0.984 1.921 -0.806
H9 -1.048 -0.675 -0.869
H10 -1.048 -0.675 0.869
H11 1.048 0.675 -0.869
H12 1.048 0.675 0.869

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.52841.45062.51682.75942.75942.04222.04222.14702.14701.08531.0853
C21.52842.51681.45062.04222.04222.75942.75941.08531.08532.14702.1470
N31.45062.51683.81324.10994.10990.99800.99802.76202.76202.06422.0642
N42.51681.45063.81320.99800.99804.10994.10992.06422.06422.76202.7620
H52.75942.04224.10990.99801.61184.31704.60812.91322.38453.09052.5980
H62.75942.04224.10990.99801.61184.60814.31702.38452.91322.59803.0905
H72.04222.75940.99804.10994.31704.60811.61183.09052.59802.91322.3845
H82.04222.75940.99804.10994.60814.31701.61182.59803.09052.38452.9132
H92.14701.08532.76202.06422.91322.38453.09052.59801.73792.49383.0396
H102.14701.08532.76202.06422.38452.91322.59803.09051.73793.03962.4938
H111.08532.14702.06422.76203.09052.59802.91322.38452.49383.03961.7379
H121.08532.14702.06422.76202.59803.09052.38452.91323.03962.49381.7379

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 115.285 C1 C2 H9 109.288
C1 C2 H10 109.288 C1 N3 H7 111.697
C1 N3 H8 111.697 C2 C1 N3 115.285
C2 C1 H11 109.288 C2 C1 H12 109.288
C2 N4 H5 111.697 C2 N4 H6 111.697
N3 C1 H11 108.113 N3 C1 H12 108.113
N4 C2 H9 108.113 N4 C2 H10 108.113
H5 N4 H6 107.709 H7 N3 H8 107.709
H9 C2 H10 106.382 H11 C1 H12 106.382
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.509      
2 C -0.509      
3 N -0.563      
4 N -0.563      
5 H 0.078      
6 H 0.078      
7 H 0.078      
8 H 0.078      
9 H 0.458      
10 H 0.458      
11 H 0.458      
12 H 0.458      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.434 -4.647 0.000
y -4.647 -36.028 0.000
z 0.000 0.000 -23.319
Traceless
 xyz
x 5.239 -4.647 0.000
y -4.647 -12.152 0.000
z 0.000 0.000 6.912
Polar
3z2-r213.824
x2-y211.594
xy-4.647
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.251 -0.381 0.000
y -0.381 7.071 0.000
z 0.000 0.000 5.788


<r2> (average value of r2) Å2
<r2> 105.816
(<r2>)1/2 10.287