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 CH3NH2 (methyl amine)

using model chemistry: B2PLYP=FULLultrafine/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULLultrafine/6-31G*
 hartrees
Energy at 0K-95.730685
Energy at 298.15K 
HF Energy-95.631101
Nuclear repulsion energy41.964293
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 B2PLYP=FULLultrafine/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' 3503 3323 1.42 101.71 0.12 0.21
2 A' 3121 2961 40.94 83.64 0.29 0.45
3 A' 3017 2862 91.48 117.14 0.17 0.29
4 A' 1724 1635 23.28 10.56 0.69 0.82
5 A' 1550 1471 7.60 23.23 0.71 0.83
6 A' 1505 1428 2.95 8.32 0.65 0.79
7 A' 1211 1149 9.76 5.43 0.48 0.64
8 A' 1085 1029 7.06 9.05 0.34 0.51
9 A' 896 850 170.49 5.46 0.57 0.73
10 A" 3591 3407 0.22 62.93 0.75 0.86
11 A" 3163 3001 34.08 68.38 0.75 0.86
12 A" 1569 1489 1.90 22.14 0.75 0.86
13 A" 1388 1317 0.07 4.80 0.75 0.86
14 A" 997 946 0.00 0.57 0.75 0.86
15 A" 338 320 45.87 2.23 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14328.2 cm-1
Scaled (by 0.9487) Zero Point Vibrational Energy (zpe) 13593.1 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 B2PLYP=FULLultrafine/6-31G*
ABC
3.43815 0.75995 0.73118

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.052 0.704 0.000
N2 0.052 -0.760 0.000
H3 -0.942 1.179 0.000
H4 0.593 1.060 0.880
H5 0.593 1.060 -0.880
H6 -0.458 -1.101 -0.811
H7 -0.458 -1.101 0.811

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7
C11.46371.10131.09281.09282.04342.0434
N21.46372.17892.09282.09281.01681.0168
H31.10132.17891.77281.77282.46852.4685
H41.09282.09281.77281.76042.93862.4040
H51.09282.09281.77281.76042.40402.9386
H62.04341.01682.46852.93862.40401.6223
H72.04341.01682.46852.40402.93861.6223

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 109.613 C1 N2 H7 109.613
N2 C1 H3 115.584 N2 C1 H4 109.026
N2 C1 H5 109.026 H3 C1 H4 107.797
H3 C1 H5 107.797 H4 C1 H5 107.308
H6 N2 H7 105.830
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.315      
2 N -0.734      
3 H 0.125      
4 H 0.158      
5 H 0.158      
6 H 0.304      
7 H 0.304      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.460 0.379 0.000 1.508
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.750 2.269 -0.002
y 2.269 -14.167 -0.002
z -0.002 -0.002 -12.535
Traceless
 xyz
x -1.399 2.269 -0.002
y 2.269 -0.525 -0.002
z -0.002 -0.002 1.924
Polar
3z2-r23.848
x2-y2-0.582
xy2.269
xz-0.002
yz-0.002


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.449 0.154 0.000
y 0.154 3.044 -0.000
z 0.000 -0.000 2.851


<r2> (average value of r2) Å2
<r2> 26.617
(<r2>)1/2 5.159