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All results from a given calculation for CH3CH2NH2 (Ethylamine)

using model chemistry: QCISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS trans 1A'
1 2 no C1 gauche 1A

Conformer 1 (CS trans)

Jump to S1C2
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-134.715640
Energy at 298.15K-134.723884
HF Energy-134.246290
Nuclear repulsion energy82.550508
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 QCISD/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3465 3300 2.06      
2 A' 3131 2982 41.60      
3 A' 3070 2923 33.14      
4 A' 3052 2906 22.00      
5 A' 1728 1646 24.15      
6 A' 1557 1482 2.07      
7 A' 1540 1466 0.09      
8 A' 1462 1393 8.13      
9 A' 1420 1352 13.32      
10 A' 1196 1139 13.96      
11 A' 1108 1055 27.58      
12 A' 951 906 138.94      
13 A' 904 861 35.29      
14 A' 411 392 6.83      
15 A" 3552 3383 1.03      
16 A" 3132 2983 63.89      
17 A" 3105 2957 4.24      
18 A" 1545 1472 6.73      
19 A" 1424 1356 0.01      
20 A" 1311 1249 0.05      
21 A" 1032 983 1.57      
22 A" 794 757 0.60      
23 A" 318 303 48.40      
24 A" 268 255 11.40      

Unscaled Zero Point Vibrational Energy (zpe) 20738.1 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 19748.9 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 QCISD/6-31G*
ABC
1.05761 0.29153 0.26014

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.310 -0.090 0.000
C2 0.000 0.575 0.000
C3 1.215 -0.352 0.000
H4 2.158 0.212 0.000
H5 1.213 -1.000 0.887
H6 1.213 -1.000 -0.887
H7 0.032 1.234 -0.878
H8 0.032 1.234 0.878
H9 -1.383 -0.694 0.817
H10 -1.383 -0.694 -0.817

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6 H7 H8 H9 H10
N11.46912.53863.48182.82542.82542.07972.07971.01901.0190
C21.46911.52812.18872.17702.17701.09811.09812.04702.0470
C32.53861.52811.09961.09861.09862.16432.16432.74482.7448
H43.48182.18871.09961.77521.77522.51672.51673.74593.7459
H52.82542.17701.09861.77521.77403.08222.52712.61513.1207
H62.82542.17701.09861.77521.77402.52713.08223.12072.6151
H72.07971.09812.16432.51673.08222.52711.75522.93142.3924
H82.07971.09812.16432.51672.52713.08221.75522.39242.9314
H91.01902.04702.74483.74592.61513.12072.93142.39241.6349
H101.01902.04702.74483.74593.12072.61512.39242.93141.6349

picture of Ethylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 115.765 N1 C2 H7 107.332
N1 C2 H8 107.332 C2 N1 H9 109.384
C2 N1 H10 109.384 C2 C3 H4 111.764
C2 C3 H5 110.893 C2 C3 H6 110.893
C3 C2 H7 109.917 C3 C2 H8 109.917
H4 C3 H5 107.719 H4 C3 H6 107.719
H5 C3 H6 107.678 H7 C2 H8 106.106
H9 N1 H10 106.680
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1 gauche)

Jump to S1C1
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-134.715309
Energy at 298.15K 
Nuclear repulsion energy 
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 QCISD/6-31G*
Rotational Constants (cm-1) from geometry optimized at QCISD/6-31G*
ABC
1.05761 0.29153 0.26014

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G*

Point Group is Cs

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability