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All results from a given calculation for P(CH3)3 (trimethylphosphine)

using model chemistry: MP2/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2/CEP-31G*
 hartrees
Energy at 0K-28.537636
Energy at 298.15K-28.547284
HF Energy-28.054709
Nuclear repulsion energy71.125974
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 MP2/CEP-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 A1 3180 3019 52.67      
2 A1 3072 2917 23.82      
3 A1 1512 1435 11.87      
4 A1 1378 1309 4.26      
5 A1 1003 952 44.46      
6 A1 668 635 0.15      
7 A1 294 279 0.47      
8 A2 3191 3030 0.00      
9 A2 1490 1414 0.00      
10 A2 808 767 0.00      
11 A2 149 142 0.00      
12 E 3192 3030 20.92      
12 E 3192 3030 20.92      
13 E 3181 3020 4.87      
13 E 3181 3020 4.87      
14 E 3075 2920 23.11      
14 E 3075 2920 23.11      
15 E 1504 1428 10.86      
15 E 1504 1428 10.86      
16 E 1493 1418 5.60      
16 E 1493 1418 5.60      
17 E 1354 1285 4.63      
17 E 1354 1285 4.63      
18 E 985 935 22.82      
18 E 985 935 22.82      
19 E 867 823 0.75      
19 E 867 823 0.75      
20 E 728 691 8.94      
20 E 728 691 8.94      
21 E 249 237 0.10      
21 E 249 237 0.10      
22 E 204 193 0.02      
22 E 204 193 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 25204.8 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 23929.5 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 MP2/CEP-31G*
ABC
0.18827 0.18827 0.12195

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.621
C2 0.000 1.640 -0.288
C3 1.420 -0.820 -0.288
C4 -1.420 -0.820 -0.288
H5 0.000 1.503 -1.385
H6 -0.893 2.219 0.004
H7 0.893 2.219 0.004
H8 1.302 -0.752 -1.385
H9 2.369 -0.336 0.004
H10 1.475 -1.883 0.004
H11 -1.302 -0.752 -1.385
H12 -1.475 -1.883 0.004
H13 -2.369 -0.336 0.004

Atom - Atom Distances (Å)
  P1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
P11.87451.87451.87452.50662.47052.47052.50662.47052.47052.50662.47052.4705
C21.87452.84012.84011.10561.10431.10432.93573.09823.83062.93573.83063.0982
C31.87452.84012.84012.93573.83063.09811.10561.10431.10432.93573.09823.8306
C41.87452.84012.84012.93573.09813.83062.93573.83063.09821.10561.10431.1043
H52.50661.10562.93572.93571.80021.80022.60413.30513.94682.60413.94683.3051
H62.47051.10433.83063.09811.80021.78703.94684.14364.73733.30514.14362.9503
H72.47051.10433.09813.83061.80021.78703.30512.95034.14363.94684.73734.1436
H82.50662.93571.10562.93572.60413.94683.30511.80021.80022.60413.30513.9468
H92.47053.09821.10433.83063.30514.14362.95031.80021.78703.94684.14364.7373
H102.47053.83061.10433.09823.94684.73734.14361.80021.78703.30512.95034.1436
H112.50662.93572.93571.10562.60413.30513.94682.60413.94683.30511.80021.8002
H122.47053.83063.09821.10433.94684.14364.73733.30514.14362.95031.80021.7870
H132.47053.09823.83061.10433.30512.95034.14363.94684.73734.14361.80021.7870

picture of trimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C2 H5 111.909 P1 C2 H6 109.322
P1 C2 H7 109.322 P1 C3 H8 111.909
P1 C3 H9 109.322 P1 C3 H10 109.322
P1 C4 H11 111.909 P1 C4 H12 109.322
P1 C4 H13 109.322 C2 P1 C3 98.496
C2 P1 C4 98.496 C3 P1 C4 98.496
H5 C2 H6 109.095 H5 C2 H7 109.095
H6 C2 H7 108.017 H8 C3 H9 109.095
H8 C3 H10 109.095 H9 C3 H10 108.017
H11 C4 H12 109.095 H11 C4 H13 109.095
H12 C4 H13 108.017
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability