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All results from a given calculation for CH3NH2 (methyl amine)

using model chemistry: HF/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/CEP-31G*
 hartrees
Energy at 0K-18.063103
Energy at 298.15K 
HF Energy-18.063103
Nuclear repulsion energy26.548281
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-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' 3744 3362 1.05 97.76 0.13 0.23
2 A' 3260 2928 84.78 99.00 0.28 0.44
3 A' 3176 2852 127.69 137.18 0.12 0.22
4 A' 1828 1642 31.56 9.51 0.74 0.85
5 A' 1626 1460 7.37 19.28 0.75 0.86
6 A' 1584 1422 6.43 4.86 0.58 0.73
7 A' 1274 1144 20.27 5.60 0.45 0.62
8 A' 1137 1021 31.01 17.39 0.32 0.49
9 A' 945 848 168.84 4.47 0.54 0.70
10 A" 3833 3442 0.01 62.69 0.75 0.86
11 A" 3296 2960 78.32 76.96 0.75 0.86
12 A" 1642 1475 1.61 20.79 0.75 0.86
13 A" 1460 1311 0.00 6.50 0.75 0.86
14 A" 1033 928 0.53 0.26 0.75 0.86
15 A" 334 300 50.85 1.83 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15085.0 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 13546.4 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-31G*
ABC
3.46810 0.75842 0.72918

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.050 0.708 0.000
N2 0.050 -0.760 0.000
H3 -0.949 1.162 0.000
H4 0.587 1.065 0.880
H5 0.587 1.065 -0.880
H6 -0.440 -1.107 -0.807
H7 -0.440 -1.107 0.807

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7
C11.46801.09771.09101.09102.04562.0456
N21.46802.16652.09622.09621.00631.0063
H31.09772.16651.77281.77282.46122.4612
H41.09102.09621.77281.76072.93582.4033
H51.09102.09621.77281.76072.40332.9358
H62.04561.00632.46122.93582.40331.6148
H72.04561.00632.46122.40332.93581.6148

picture of methyl amine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.136 C1 N2 H7 110.136
N2 C1 H3 114.445 N2 C1 H4 109.115
N2 C1 H5 109.115 H3 C1 H4 108.180
H3 C1 H5 108.180 H4 C1 H5 107.591
H6 N2 H7 106.707
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.331      
2 N -0.607      
3 H 0.108      
4 H 0.137      
5 H 0.137      
6 H 0.279      
7 H 0.279      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.594 0.490 0.000 1.668
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.813 2.426 0.000
y 2.426 -14.235 0.000
z 0.000 0.000 -12.374
Traceless
 xyz
x -1.508 2.426 0.000
y 2.426 -0.642 0.000
z 0.000 0.000 2.150
Polar
3z2-r24.300
x2-y2-0.578
xy2.426
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.258 0.106 0.000
y 0.106 2.874 0.000
z 0.000 0.000 2.712


<r2> (average value of r2) Å2
<r2> 24.438
(<r2>)1/2 4.943