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 CH3PH2 (Methyl phosphine)

using model chemistry: mPW1PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G*
 hartrees
Energy at 0K-382.441467
Energy at 298.15K-382.447086
Nuclear repulsion energy59.894179
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 mPW1PW91/6-31G*
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 3189 3024 8.52      
2 A 3092 2932 13.89      
3 A 2434 2308 91.29      
4 A 1511 1433 7.19      
5 A 1368 1298 0.74      
6 A 1149 1090 16.96      
7 A 1017 964 53.01      
8 A 756 717 0.95      
9 A 693 657 6.59      
10 A 3179 3014 7.47      
11 A 2444 2317 124.19      
12 A 1512 1434 9.05      
13 A 1058 1003 23.24      
14 A 713 676 0.74      
15 A 238 226 3.30      

Unscaled Zero Point Vibrational Energy (zpe) 12176.1 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 11546.6 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 mPW1PW91/6-31G*
ABC
2.39944 0.39127 0.38759

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.070 1.188 0.000
P2 0.070 -0.675 0.000
H3 -0.928 1.628 0.000
H4 0.612 1.542 0.881
H5 0.612 1.542 -0.881
H6 -0.888 -0.860 -1.034
H7 -0.888 -0.860 1.034

Atom - Atom Distances (Å)
  C1 P2 H3 H4 H5 H6 H7
C11.86251.09141.09291.09292.48612.4861
P21.86252.50962.44592.44591.42151.4215
H31.09142.50961.77641.77642.69422.6942
H41.09292.44591.77641.76183.41822.8358
H51.09292.44591.77641.76182.83583.4182
H62.48611.42152.69423.41822.83582.0671
H72.48611.42152.69422.83583.41822.0671

picture of Methyl phosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 P2 H6 97.498 C1 P2 H7 97.498
P2 C1 H3 113.765 P2 C1 H4 108.905
P2 C1 H5 108.905 H3 C1 H4 108.834
H3 C1 H5 108.834 H4 C1 H5 107.411
H6 P2 H7 93.285
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.709      
2 P 0.056      
3 H 0.204      
4 H 0.203      
5 H 0.203      
6 H 0.022      
7 H 0.022      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.788 1.150 0.000 1.394
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.474 1.646 0.000
y 1.646 -22.191 0.000
z 0.000 0.000 -20.759
Traceless
 xyz
x -0.999 1.646 0.000
y 1.646 -0.574 0.000
z 0.000 0.000 1.573
Polar
3z2-r23.146
x2-y2-0.283
xy1.646
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 44.777
(<r2>)1/2 6.692