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All results from a given calculation for CH3CH2NH2 (Ethylamine)

using model chemistry: MP2=FULL/3-21G*

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=FULL/3-21G*
 hartrees
Energy at 0K-133.800745
Energy at 298.15K-133.808955
HF Energy-133.502631
Nuclear repulsion energy81.777321
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=FULL/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 A' 3420 3242 2.51      
2 A' 3154 2990 33.76      
3 A' 3101 2939 27.24      
4 A' 3077 2917 14.83      
5 A' 1761 1669 16.98      
6 A' 1603 1520 2.58      
7 A' 1586 1503 0.53      
8 A' 1485 1408 4.13      
9 A' 1430 1356 6.48      
10 A' 1186 1125 13.84      
11 A' 1038 984 1.25      
12 A' 910 863 73.89      
13 A' 798 757 171.95      
14 A' 398 378 7.22      
15 A" 3521 3338 1.65      
16 A" 3161 2997 54.14      
17 A" 3136 2973 0.09      
18 A" 1601 1518 6.95      
19 A" 1434 1359 0.20      
20 A" 1336 1267 0.01      
21 A" 1047 993 1.71      
22 A" 802 760 1.14      
23 A" 321 305 55.22      
24 A" 268 254 10.33      

Unscaled Zero Point Vibrational Energy (zpe) 20787.3 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 19706.3 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=FULL/3-21G*
ABC
1.03736 0.28442 0.25388

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.321 -0.110 0.000
C2 0.000 0.590 0.000
C3 1.236 -0.349 0.000
H4 2.169 0.225 0.000
H5 1.221 -0.990 0.889
H6 1.221 -0.990 -0.889
H7 0.028 1.237 -0.883
H8 0.028 1.237 0.883
H9 -1.416 -0.698 0.833
H10 -1.416 -0.698 -0.833

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6 H7 H8 H9 H10
N11.49552.56853.50612.83392.83392.10132.10131.02401.0240
C21.49551.55262.19922.18622.18621.09461.09462.08812.0881
C32.56851.55261.09551.09591.09592.18042.18042.80172.8017
H43.50612.19921.09551.77881.77882.52662.52663.79453.7945
H52.83392.18621.09591.77881.77823.08572.52642.65443.1634
H62.83392.18621.09591.77881.77822.52643.08573.16342.6544
H72.10131.09462.18042.52663.08572.52641.76522.96242.4158
H82.10131.09462.18042.52662.52643.08571.76522.41582.9624
H91.02402.08812.80173.79452.65443.16342.96242.41581.6653
H101.02402.08812.80173.79453.16342.65442.41582.96241.6653

picture of Ethylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 114.832 N1 C2 H7 107.436
N1 C2 H8 107.436 C2 N1 H9 110.547
C2 N1 H10 110.547 C2 C3 H4 111.122
C2 C3 H5 110.074 C2 C3 H6 110.074
C3 C2 H7 109.692 C3 C2 H8 109.692
H4 C3 H5 108.528 H4 C3 H6 108.528
H5 C3 H6 108.449 H7 C2 H8 107.478
H9 N1 H10 108.811
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1 gauche)

Jump to S1C1
Energy calculated at MP2=FULL/3-21G*
 hartrees
Energy at 0K-133.799883
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=FULL/3-21G*
Rotational Constants (cm-1) from geometry optimized at MP2=FULL/3-21G*
ABC
1.03736 0.28442 0.25388

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is Cs

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability