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: HF/CEP-121G

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-121G
 hartrees
Energy at 0K-14.682665
Energy at 298.15K-14.688341
Nuclear repulsion energy22.130755
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-121G
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 3283 2996 24.37      
2 A 3169 2892 40.54      
3 A 2413 2202 121.87      
4 A 1611 1470 8.92      
5 A 1477 1348 0.36      
6 A 1216 1109 22.63      
7 A 1090 995 57.00      
8 A 787 718 2.68      
9 A 699 638 4.51      
10 A 3281 2994 22.16      
11 A 2428 2216 143.22      
12 A 1612 1471 8.80      
13 A 1124 1026 24.56      
14 A 756 690 5.13      
15 A 210 192 4.17      

Unscaled Zero Point Vibrational Energy (zpe) 12578.3 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 11477.7 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-121G
ABC
2.38552 0.37614 0.37090

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.130 0.906 0.000
P2 0.130 -1.002 0.000
H3 -0.871 1.320 0.000
H4 0.661 1.253 0.878
H5 0.661 1.253 -0.878
H6 -0.809 -1.221 -1.067
H7 -0.809 -1.221 1.067

Atom - Atom Distances (Å)
  C1 P2 H3 H4 H5 H6 H7
C11.90791.08281.08331.08332.55802.5580
P21.90792.52832.47762.47761.43811.4381
H31.08282.52831.76661.76662.75652.7565
H41.08332.47761.76661.75643.47352.8838
H51.08332.47761.76661.75642.88383.4735
H62.55801.43812.75653.47352.88382.1342
H72.55801.43812.75652.88383.47352.1342

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 98.753 C1 P2 H7 98.753
P2 C1 H3 112.483 P2 C1 H4 108.692
P2 C1 H5 108.692 H3 C1 H4 109.284
H3 C1 H5 109.284 H4 C1 H5 108.316
H6 P2 H7 95.806
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.729      
2 P 0.259      
3 H 0.177      
4 H 0.179      
5 H 0.179      
6 H -0.033      
7 H -0.033      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.972 1.189 0.000 1.536
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.785 2.273 0.000
y 2.273 -23.024 0.000
z 0.000 0.000 -20.452
Traceless
 xyz
x -1.047 2.273 0.000
y 2.273 -1.405 0.000
z 0.000 0.000 2.452
Polar
3z2-r24.905
x2-y20.239
xy2.273
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.476 0.502 0.000
y 0.502 5.821 0.000
z 0.000 0.000 5.122


<r2> (average value of r2) Å2
<r2> 36.873
(<r2>)1/2 6.072