return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3CH2NH2 (Ethylamine)

using model chemistry: mPW1PW91/6-31+G**

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 mPW1PW91/6-31+G**
 hartrees
Energy at 0K-135.154106
Energy at 298.15K-135.162252
Nuclear repulsion energy82.829554
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 mPW1PW91/6-31+G**
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' 3550 3379 0.51      
2 A' 3134 2983 42.67      
3 A' 3070 2922 36.38      
4 A' 3051 2904 26.70      
5 A' 1679 1598 33.54      
6 A' 1511 1438 4.34      
7 A' 1494 1422 0.21      
8 A' 1418 1350 16.16      
9 A' 1385 1318 11.56      
10 A' 1160 1105 12.98      
11 A' 1088 1036 30.03      
12 A' 900 857 5.69      
13 A' 839 799 197.12      
14 A' 405 386 8.72      
15 A" 3644 3469 1.75      
16 A" 3139 2988 57.76      
17 A" 3107 2957 5.22      
18 A" 1502 1429 10.01      
19 A" 1395 1328 0.12      
20 A" 1273 1212 0.00      
21 A" 1008 960 1.16      
22 A" 780 742 1.19      
23 A" 293 279 39.16      
24 A" 252 240 18.48      

Unscaled Zero Point Vibrational Energy (zpe) 20538.7 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 19548.7 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 mPW1PW91/6-31+G**
ABC
1.07516 0.29166 0.26111

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.303 -0.083 0.000
C2 0.000 0.569 0.000
C3 1.214 -0.357 0.000
H4 2.150 0.212 0.000
H5 1.215 -1.003 0.884
H6 1.215 -1.003 -0.884
H7 0.040 1.228 -0.874
H8 0.040 1.228 0.874
H9 -1.412 -0.675 0.816
H10 -1.412 -0.675 -0.816

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6 H7 H8 H9 H10
N11.45682.53143.46472.82262.82262.06982.06981.01381.0138
C21.45681.52722.17912.17512.17511.09521.09522.05122.0512
C32.53141.52721.09501.09501.09502.15782.15782.76812.7681
H43.46472.17911.09501.76951.76952.49982.49983.75993.7599
H52.82262.17511.09501.76951.76843.07442.52192.64853.1464
H62.82262.17511.09501.76951.76842.52193.07443.14642.6485
H72.06981.09522.15782.49983.07442.52191.74862.92982.3938
H82.06981.09522.15782.49982.52193.07441.74862.39382.9298
H91.01382.05122.76813.75992.64853.14642.92982.39381.6316
H101.01382.05122.76813.75993.14642.64852.39382.92981.6316

picture of Ethylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 116.039 N1 C2 H7 107.547
N1 C2 H8 107.547 C2 N1 H9 110.978
C2 N1 H10 110.978 C2 C3 H4 111.338
C2 C3 H5 111.024 C2 C3 H6 111.024
C3 C2 H7 109.641 C3 C2 H8 109.641
H4 C3 H5 107.797 H4 C3 H6 107.797
H5 C3 H6 107.698 H7 C2 H8 105.932
H9 N1 H10 107.170
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.617      
2 C -0.252      
3 C -0.537      
4 H 0.166      
5 H 0.163      
6 H 0.163      
7 H 0.163      
8 H 0.163      
9 H 0.294      
10 H 0.294      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.045 -0.999 0.000 1.446
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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 58.799
(<r2>)1/2 7.668

Conformer 2 (C1 gauche)

Jump to S1C1
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-135.155194
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 mPW1PW91/6-31+G**
Rotational Constants (cm-1) from geometry optimized at mPW1PW91/6-31+G**
ABC
1.07516 0.29166 0.26111

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is Cs

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability