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All results from a given calculation for CH3PH2 (Methyl phosphine)

using model chemistry: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-381.750662
Energy at 298.15K-381.756310
HF Energy-381.485824
Nuclear repulsion energy59.868736
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 MP3/6-31G*
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 3213 3016 9.96      
2 A 3120 2928 13.48      
3 A 2459 2308 83.05      
4 A 1536 1442 6.01      
5 A 1413 1326 0.59      
6 A 1143 1073 20.51      
7 A 1042 978 51.70      
8 A 769 722 1.06      
9 A 714 670 7.47      
10 A 3204 3008 8.69      
11 A 2469 2318 113.88      
12 A 1540 1445 8.03      
13 A 1075 1009 21.77      
14 A 714 670 1.98      
15 A 241 226 2.71      

Unscaled Zero Point Vibrational Energy (zpe) 12325.8 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 11569.0 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 MP3/6-31G*
ABC
2.40274 0.39113 0.38652

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.070 1.189 0.000
P2 0.070 -0.674 0.000
H3 -0.930 1.626 0.000
H4 0.608 1.546 0.882
H5 0.608 1.546 -0.882
H6 -0.874 -0.869 -1.044
H7 -0.874 -0.869 1.044

Atom - Atom Distances (Å)
  C1 P2 H3 H4 H5 H6 H7
C11.86341.09141.09281.09282.49362.4936
P21.86342.50852.44852.44851.42091.4209
H31.09142.50851.77491.77492.70592.7059
H41.09282.44851.77491.76333.42602.8380
H51.09282.44851.77491.76332.83803.4260
H62.49361.42092.70593.42602.83802.0886
H72.49361.42092.70592.83803.42602.0886

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 97.889 C1 P2 H7 97.889
P2 C1 H3 113.617 P2 C1 H4 109.041
P2 C1 H5 109.041 H3 C1 H4 108.702
H3 C1 H5 108.702 H4 C1 H5 107.566
H6 P2 H7 94.608
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability