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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-134.524698
Energy at 298.15K-134.532847
HF Energy-134.189631
Nuclear repulsion energy81.660239
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' 3485 3359 1.42      
2 A' 3072 2961 50.39      
3 A' 3017 2907 32.29      
4 A' 2996 2887 26.04      
5 A' 1741 1678 25.22      
6 A' 1553 1496 2.92      
7 A' 1539 1483 0.05      
8 A' 1461 1408 3.06      
9 A' 1420 1368 9.30      
10 A' 1168 1126 14.21      
11 A' 1068 1029 15.17      
12 A' 899 867 18.62      
13 A' 755 728 276.53      
14 A' 405 391 10.47      
15 A" 3595 3464 0.32      
16 A" 3077 2965 74.94      
17 A" 3049 2938 2.18      
18 A" 1546 1490 5.88      
19 A" 1405 1353 0.05      
20 A" 1311 1263 0.02      
21 A" 1024 986 0.54      
22 A" 788 760 0.84      
23 A" 298 287 51.59      
24 A" 262 253 13.68      

Unscaled Zero Point Vibrational Energy (zpe) 20467.1 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 19722.1 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 QCISD/6-31G
ABC
1.04652 0.28215 0.25295

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 -1.315 -0.108 0.000
C2 0.000 0.580 0.000
C3 1.241 -0.351 0.000
H4 2.179 0.232 0.000
H5 1.239 -1.000 0.894
H6 1.239 -1.000 -0.894
H7 0.027 1.239 -0.885
H8 0.027 1.239 0.885
H9 -1.479 -0.664 0.839
H10 -1.479 -0.664 -0.839

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6 H7 H8 H9 H10
N11.48412.56743.51002.84852.84852.09732.09731.01961.0196
C21.48411.55202.20652.19792.19791.10331.10332.10732.1073
C32.56741.55201.10401.10431.10432.18752.18752.86392.8639
H43.51002.20651.10401.78861.78862.53502.53503.85843.8584
H52.84852.19791.10431.78861.78763.10542.54562.73933.2407
H62.84852.19791.10431.78861.78762.54563.10543.24072.7393
H72.09731.10332.18752.53503.10542.54561.76962.97692.4277
H82.09731.10332.18752.53502.54563.10541.76962.42772.9769
H91.01962.10732.86393.85842.73933.24072.97692.42771.6774
H101.01962.10732.86393.85843.24072.73932.42772.97691.6774

picture of Ethylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 115.459 N1 C2 H7 107.391
N1 C2 H8 107.391 C2 N1 H9 113.326
C2 N1 H10 113.326 C2 C3 H4 111.229
C2 C3 H5 110.539 C2 C3 H6 110.539
C3 C2 H7 109.787 C3 C2 H8 109.787
H4 C3 H5 108.179 H4 C3 H6 108.179
H5 C3 H6 108.069 H7 C2 H8 106.634
H9 N1 H10 110.695
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-134.524169
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
1.04652 0.28215 0.25295

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