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

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-95.818491
Energy at 298.15K 
HF Energy-95.818491
Nuclear repulsion energy41.996679
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 B3PW91/6-31G*
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' 3499 3347 1.47      
2 A' 3090 2956 41.41      
3 A' 2978 2849 102.93      
4 A' 1705 1632 23.93      
5 A' 1525 1459 8.67      
6 A' 1482 1417 2.41      
7 A' 1191 1140 7.26      
8 A' 1090 1043 8.76      
9 A' 873 836 179.01      
10 A" 3587 3432 0.08      
11 A" 3133 2998 34.02      
12 A" 1544 1477 2.52      
13 A" 1369 1310 0.19      
14 A" 988 945 0.05      
15 A" 333 319 47.40      

Unscaled Zero Point Vibrational Energy (zpe) 14193.7 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 13579.1 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 B3PW91/6-31G*
ABC
3.43421 0.76293 0.73382

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.051 0.701 0.000
N2 0.051 -0.758 0.000
H3 -0.943 1.183 0.000
H4 0.594 1.061 0.881
H5 0.594 1.061 -0.881
H6 -0.455 -1.102 -0.812
H7 -0.455 -1.102 0.812

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 H6 H7
C11.45831.10491.09561.09562.04082.0408
N21.45832.18062.09212.09211.01701.0170
H31.10492.18061.77591.77592.47372.4737
H41.09562.09211.77591.76152.94002.4048
H51.09562.09211.77591.76152.40482.9400
H62.04081.01702.47372.94002.40481.6241
H72.04081.01702.47372.40482.94001.6241

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 109.789 C1 N2 H7 109.789
N2 C1 H3 115.900 N2 C1 H4 109.181
N2 C1 H5 109.181 H3 C1 H4 107.609
H3 C1 H5 107.609 H4 C1 H5 107.001
H6 N2 H7 105.969
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.374      
2 N -0.740      
3 H 0.140      
4 H 0.175      
5 H 0.175      
6 H 0.312      
7 H 0.312      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.451 0.337 0.000 1.490
CHELPG        
AIM        
ESP -1.431 0.314 0.000 1.465


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.626 2.285 0.000
y 2.285 -13.973 0.000
z 0.000 0.000 -12.374
Traceless
 xyz
x -1.453 2.285 0.000
y 2.285 -0.473 0.000
z 0.000 0.000 1.926
Polar
3z2-r23.852
x2-y2-0.653
xy2.285
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.483 0.139 0.000
y 0.139 3.102 0.000
z 0.000 0.000 2.870


<r2> (average value of r2) Å2
<r2> 26.486
(<r2>)1/2 5.146