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All results from a given calculation for CH3CH2NH2 (Ethylamine)

using model chemistry: MP2/6-31G

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 MP2/6-31G
 hartrees
Energy at 0K-134.486995
Energy at 298.15K-134.495170
HF Energy-134.190486
Nuclear repulsion energy81.853006
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 MP2/6-31G
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' 3530 3377 0.50      
2 A' 3136 3001 45.96      
3 A' 3073 2941 35.07      
4 A' 3050 2918 23.05      
5 A' 1750 1674 26.25      
6 A' 1575 1507 3.05      
7 A' 1560 1493 0.08      
8 A' 1477 1413 3.19      
9 A' 1435 1373 10.28      
10 A' 1180 1129 14.82      
11 A' 1082 1035 17.12      
12 A' 909 870 13.93      
13 A' 740 708 293.35      
14 A' 409 391 11.12      
15 A" 3651 3493 0.06      
16 A" 3143 3008 70.91      
17 A" 3116 2981 2.83      
18 A" 1569 1501 6.11      
19 A" 1418 1357 0.10      
20 A" 1327 1269 0.05      
21 A" 1032 987 0.42      
22 A" 797 763 1.12      
23 A" 302 289 47.71      
24 A" 268 257 16.73      

Unscaled Zero Point Vibrational Energy (zpe) 20764.5 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 19867.5 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 MP2/6-31G
ABC
1.05422 0.28295 0.25387

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.311 -0.111 0.000
C2 0.000 0.578 0.000
C3 1.241 -0.348 0.000
H4 2.173 0.235 0.000
H5 1.239 -0.994 0.891
H6 1.239 -0.994 -0.891
H7 0.026 1.234 -0.882
H8 0.026 1.234 0.882
H9 -1.484 -0.660 0.839
H10 -1.484 -0.660 -0.839

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6 H7 H8 H9 H10
N11.48122.56303.50182.84192.84192.09102.09101.01721.0172
C21.48121.54852.20042.19082.19081.09901.09902.10682.1068
C32.56301.54851.10001.09991.09992.18092.18092.86802.8680
H43.50182.20041.10001.78211.78212.52742.52743.85773.8577
H52.84192.19081.09991.78211.78113.09432.53652.74413.2431
H62.84192.19081.09991.78211.78112.53653.09433.24312.7441
H72.09101.09902.18092.52743.09432.53651.76362.97072.4220
H82.09101.09902.18092.52742.53653.09431.76362.42202.9707
H91.01722.10682.86803.85772.74413.24312.97072.42201.6776
H101.01722.10682.86803.85773.24312.74412.42202.97071.6776

picture of Ethylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 115.533 N1 C2 H7 107.344
N1 C2 H8 107.344 C2 N1 H9 113.669
C2 N1 H10 113.669 C2 C3 H4 111.237
C2 C3 H5 110.482 C2 C3 H6 110.482
C3 C2 H7 109.759 C3 C2 H8 109.759
H4 C3 H5 108.211 H4 C3 H6 108.211
H5 C3 H6 108.117 H7 C2 H8 106.713
H9 N1 H10 111.091
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1 gauche)

Jump to S1C1
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-134.486386
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 MP2/6-31G
Rotational Constants (cm-1) from geometry optimized at MP2/6-31G
ABC
1.05422 0.28295 0.25387

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is Cs

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability