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All results from a given calculation for CH3CH2NH2 (Ethylamine)

using model chemistry: HF/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 HF/CEP-121G*
 hartrees
Energy at 0K-24.729300
Energy at 298.15K-24.737601
Nuclear repulsion energy50.120990
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 HF/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' 3709 3351 1.14      
2 A' 3235 2923 99.55      
3 A' 3201 2892 37.16      
4 A' 3165 2859 42.74      
5 A' 1839 1662 34.68      
6 A' 1638 1479 1.11      
7 A' 1618 1462 0.29      
8 A' 1548 1398 13.00      
9 A' 1502 1357 23.72      
10 A' 1233 1114 14.87      
11 A' 1147 1036 54.96      
12 A' 977 882 153.10      
13 A' 937 846 25.25      
14 A' 424 383 7.96      
15 A" 3789 3423 0.32      
16 A" 3250 2936 127.20      
17 A" 3219 2908 4.70      
18 A" 1623 1466 5.72      
19 A" 1505 1360 0.05      
20 A" 1375 1242 0.24      
21 A" 1077 973 1.19      
22 A" 827 747 0.01      
23 A" 306 276 39.51      
24 A" 258 233 21.90      

Unscaled Zero Point Vibrational Energy (zpe) 21700.0 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 19603.8 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 HF/CEP-121G*
ABC
1.06847 0.29134 0.25997

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.318 -0.051 0.000
C2 0.000 0.591 0.000
C3 1.201 -0.368 0.000
H4 2.141 0.181 0.000
H5 1.188 -1.009 0.880
H6 1.188 -1.009 -0.880
H7 0.051 1.240 -0.871
H8 0.051 1.240 0.871
H9 -1.416 -0.643 0.805
H10 -1.416 -0.643 -0.805

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6 H7 H8 H9 H10
N11.46602.53823.46632.82332.82332.07352.07351.00421.0042
C21.46601.53672.17972.17872.17871.08731.08732.04362.0436
C32.53821.53671.08881.08891.08892.16002.16002.75142.7514
H43.46632.17971.08881.76041.76042.49932.49933.73863.7386
H52.82332.17871.08891.76041.76013.06872.52022.63053.1233
H62.82332.17871.08891.76041.76012.52023.06873.12332.6305
H72.07351.08732.16002.49933.06872.52021.74172.91682.3879
H82.07351.08732.16002.49932.52023.06871.74172.38792.9168
H91.00422.04362.75143.73862.63053.12332.91682.38791.6108
H101.00422.04362.75143.73863.12332.63052.38792.91681.6108

picture of Ethylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 115.391 N1 C2 H7 107.684
N1 C2 H8 107.684 C2 N1 H9 110.246
C2 N1 H10 110.246 C2 C3 H4 111.094
C2 C3 H5 111.006 C2 C3 H6 111.006
C3 C2 H7 109.622 C3 C2 H8 109.622
H4 C3 H5 107.874 H4 C3 H6 107.874
H5 C3 H6 107.841 H7 C2 H8 106.447
H9 N1 H10 106.645
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.738      
2 C -0.137      
3 C -0.487      
4 H 0.159      
5 H 0.140      
6 H 0.140      
7 H 0.150      
8 H 0.150      
9 H 0.311      
10 H 0.311      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.082 -1.070 0.000 1.522
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.932 -0.029 -0.043
y -0.029 4.531 -0.100
z -0.043 -0.100 4.226


<r2> (average value of r2) Å2
<r2> 51.488
(<r2>)1/2 7.176

Conformer 2 (C1 gauche)

Jump to S1C1
Energy calculated at HF/CEP-121G*
 hartrees
Energy at 0K-24.729693
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 HF/CEP-121G*
Rotational Constants (cm-1) from geometry optimized at HF/CEP-121G*
ABC
1.06847 0.29134 0.25997

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

Point Group is Cs

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability