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All results from a given calculation for CH3CH2NH2 (Ethylamine)

using model chemistry: MP2/CEP-121G

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 MP2/CEP-121G
 hartrees
Energy at 0K-24.961852
Energy at 298.15K-24.969936
HF Energy-24.668488
Nuclear repulsion energy49.105871
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 MP2/CEP-121G
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' 3453 3371 3.67      
2 A' 3059 2985 67.50      
3 A' 2999 2927 41.73      
4 A' 2952 2881 35.33      
5 A' 1723 1682 33.04      
6 A' 1526 1489 3.79      
7 A' 1503 1467 0.10      
8 A' 1439 1405 5.29      
9 A' 1405 1371 17.19      
10 A' 1147 1120 14.17      
11 A' 1063 1037 26.27      
12 A' 879 858 11.16      
13 A' 750 732 280.43      
14 A' 391 382 10.73      
15 A" 3589 3503 0.19      
16 A" 3078 3004 92.83      
17 A" 3049 2976 1.99      
18 A" 1520 1484 7.05      
19 A" 1381 1348 0.33      
20 A" 1287 1256 0.00      
21 A" 1001 977 0.26      
22 A" 769 750 0.47      
23 A" 279 272 31.17      
24 A" 240 234 29.53      

Unscaled Zero Point Vibrational Energy (zpe) 20241.9 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 19756.1 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 MP2/CEP-121G
ABC
1.03614 0.27741 0.24879

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.334 -0.087 0.000
C2 0.000 0.599 0.000
C3 1.244 -0.352 0.000
H4 2.186 0.226 0.000
H5 1.232 -0.999 0.895
H6 1.232 -0.999 -0.895
H7 0.028 1.251 -0.889
H8 0.028 1.251 0.889
H9 -1.505 -0.641 0.843
H10 -1.505 -0.641 -0.843

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6 H7 H8 H9 H10
N11.50072.59173.53422.86702.86702.10672.10671.02251.0225
C21.50071.56562.21752.20742.20741.10271.10272.12412.1241
C32.59171.56561.10511.10451.10452.19922.19922.88912.8891
H43.53422.21751.10511.79161.79162.54882.54883.88343.8834
H52.86702.20741.10451.79161.79053.11342.55142.76063.2616
H62.86702.20741.10451.79161.79052.55143.11343.26162.7606
H72.10671.10272.19922.54883.11342.55141.77812.98792.4353
H82.10671.10272.19922.54882.55143.11341.77812.43532.9879
H91.02252.12412.88913.88342.76063.26162.98792.43531.6852
H101.02252.12412.88913.88343.26162.76062.43532.98791.6852

picture of Ethylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 115.375 N1 C2 H7 107.042
N1 C2 H8 107.042 C2 N1 H9 113.308
C2 N1 H10 113.308 C2 C3 H4 111.085
C2 C3 H5 110.331 C2 C3 H6 110.331
C3 C2 H7 109.798 C3 C2 H8 109.798
H4 C3 H5 108.357 H4 C3 H6 108.357
H5 C3 H6 108.298 H7 C2 H8 107.464
H9 N1 H10 110.986
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1 gauche)

Jump to S1C1
Energy calculated at MP2/CEP-121G
 hartrees
Energy at 0K-24.961789
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 MP2/CEP-121G
Rotational Constants (cm-1) from geometry optimized at MP2/CEP-121G
ABC
1.03614 0.27741 0.24879

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is Cs

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability