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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-188.607307
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 3265 0.00      
2 Ag 3109 2893 0.00      
3 Ag 1789 1664 0.00      
4 Ag 1589 1479 0.00      
5 Ag 1456 1355 0.00      
6 Ag 1130 1052 0.00      
7 Ag 1036 964 0.00      
8 Ag 781 727 0.00      
9 Ag 470 437 0.00      
10 Au 3601 3351 0.92      
11 Au 3167 2947 62.37      
12 Au 1453 1352 2.69      
13 Au 1124 1046 0.12      
14 Au 778 724 0.60      
15 Au 286 266 139.55      
16 Au 153 142 0.56      
17 Bg 3602 3351 0.00      
18 Bg 3138 2920 0.00      
19 Bg 1432 1332 0.00      
20 Bg 1370 1275 0.00      
21 Bg 976 909 0.00      
22 Bg 311 289 0.00      
23 Bu 3506 3262 2.14      
24 Bu 3114 2898 69.65      
25 Bu 1789 1664 42.16      
26 Bu 1606 1494 1.76      
27 Bu 1393 1296 7.43      
28 Bu 1091 1015 10.75      
29 Bu 803 747 542.31      
30 Bu 274 255 20.54      

Unscaled Zero Point Vibrational Energy (zpe) 24916.8 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 23185.1 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 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