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All results from a given calculation for CH3CH2NH2 (Ethylamine)

using model chemistry: MP2/SDD

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/SDD
 hartrees
Energy at 0K-134.497118
Energy at 298.15K-134.505178
HF Energy-134.210693
Nuclear repulsion energy81.140184
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/SDD
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' 3510 3389 0.77      
2 A' 3112 3004 61.08      
3 A' 3054 2948 41.76      
4 A' 3009 2904 30.11      
5 A' 1715 1655 30.92      
6 A' 1538 1485 5.51      
7 A' 1523 1470 0.44      
8 A' 1449 1398 6.65      
9 A' 1407 1358 9.73      
10 A' 1155 1115 19.50      
11 A' 1059 1023 21.31      
12 A' 886 855 14.56      
13 A' 723 697 274.91      
14 A' 395 382 11.18      
15 A" 3637 3511 0.26      
16 A" 3129 3021 87.99      
17 A" 3103 2996 1.37      
18 A" 1534 1480 8.08      
19 A" 1388 1339 0.44      
20 A" 1292 1248 0.15      
21 A" 1008 973 0.80      
22 A" 789 762 2.09      
23 A" 279 269 28.66      
24 A" 246 237 39.33      

Unscaled Zero Point Vibrational Energy (zpe) 20469.5 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 19759.2 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/SDD
ABC
1.03437 0.27772 0.24900

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.324 -0.116 0.000
C2 0.000 0.587 0.000
C3 1.254 -0.350 0.000
H4 2.190 0.239 0.000
H5 1.251 -0.998 0.896
H6 1.251 -0.998 -0.896
H7 0.021 1.241 -0.889
H8 0.021 1.241 0.889
H9 -1.495 -0.668 0.844
H10 -1.495 -0.668 -0.844

Atom - Atom Distances (Å)
  N1 C2 C3 H4 H5 H6 H7 H8 H9 H10
N11.49882.58863.53222.86622.86622.10702.10701.02311.0231
C21.49881.56552.21782.20952.20951.10421.10422.12662.1266
C32.58861.56551.10641.10591.10592.20122.20122.89302.8930
H43.53222.21781.10641.79311.79312.55022.55023.88803.8880
H52.86622.20951.10591.79311.79273.11742.55542.76663.2680
H62.86622.20951.10591.79311.79272.55543.11743.26802.7666
H72.10701.10422.20122.55023.11742.55541.77842.99112.4382
H82.10701.10422.20122.55022.55543.11741.77842.43822.9911
H91.02312.12662.89303.88802.76663.26802.99112.43821.6877
H101.02312.12662.89303.88803.26802.76662.43822.99111.6877

picture of Ethylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 115.273 N1 C2 H7 107.108
N1 C2 H8 107.108 C2 N1 H9 113.627
C2 N1 H10 113.627 C2 C3 H4 111.041
C2 C3 H5 110.420 C2 C3 H6 110.420
C3 C2 H7 109.872 C3 C2 H8 109.872
H4 C3 H5 108.289 H4 C3 H6 108.289
H5 C3 H6 108.295 H7 C2 H8 107.273
H9 N1 H10 111.136
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1 gauche)

Jump to S1C1
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-134.497103
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/SDD
Rotational Constants (cm-1) from geometry optimized at MP2/SDD
ABC
1.03437 0.27772 0.24900

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is Cs

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability