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

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-457.679467
Energy at 298.15K-457.689420
HF Energy-457.299660
Nuclear repulsion energy176.708241
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 MP2/3-21G*
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 3135 2983 34.09      
2 A1 3055 2906 22.16      
3 A1 1585 1508 9.78      
4 A1 1448 1377 4.26      
5 A1 1054 1002 42.08      
6 A1 670 638 0.15      
7 A1 311 296 0.15      
8 A2 3148 2995 0.00      
9 A2 1561 1485 0.00      
10 A2 869 827 0.00      
11 A2 202 192 0.00      
12 E 3149 2995 13.32      
12 E 3149 2995 13.32      
13 E 3135 2982 3.91      
13 E 3135 2982 3.91      
14 E 3057 2908 11.62      
14 E 3057 2908 11.62      
15 E 1576 1499 10.75      
15 E 1576 1499 10.75      
16 E 1566 1490 6.02      
16 E 1566 1490 6.02      
17 E 1425 1356 6.11      
17 E 1425 1356 6.11      
18 E 1037 987 23.36      
18 E 1037 987 23.36      
19 E 921 876 1.04      
19 E 921 876 1.04      
20 E 730 694 10.06      
20 E 730 694 10.06      
21 E 265 252 0.10      
21 E 265 252 0.10      
22 E 218 207 0.01      
22 E 218 207 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 25598.0 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 24351.3 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 MP2/3-21G*
ABC
0.19159 0.19159 0.12358

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.610
C2 0.000 1.628 -0.281
C3 1.410 -0.814 -0.281
C4 -1.410 -0.814 -0.281
H5 0.000 1.496 -1.372
H6 -0.888 2.206 0.004
H7 0.888 2.206 0.004
H8 1.296 -0.748 -1.372
H9 2.354 -0.334 0.004
H10 1.466 -1.871 0.004
H11 -1.296 -0.748 -1.372
H12 -1.466 -1.871 0.004
H13 -2.354 -0.334 0.004

Atom - Atom Distances (Å)
  P1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
P11.85651.85651.85652.48312.45352.45352.48312.45352.45352.48312.45352.4535
C21.85652.82052.82051.09841.09661.09662.91813.07803.80542.91813.80543.0780
C31.85652.82052.82052.91813.80543.07801.09841.09661.09662.91813.07803.8054
C41.85652.82052.82052.91813.07803.80542.91813.80543.07801.09841.09661.0966
H52.48311.09842.91812.91811.78441.78442.59133.28383.92222.59133.92223.2838
H62.45351.09663.80543.07801.78441.77513.92224.11804.70783.28384.11802.9327
H72.45351.09663.07803.80541.78441.77513.28382.93274.11803.92224.70784.1180
H82.48312.91811.09842.91812.59133.92223.28381.78441.78442.59133.28383.9222
H92.45353.07801.09663.80543.28384.11802.93271.78441.77513.92224.11804.7078
H102.45353.80541.09663.07803.92224.70784.11801.78441.77513.28382.93274.1180
H112.48312.91812.91811.09842.59133.28383.92222.59133.92223.28381.78441.7844
H122.45353.80543.07801.09663.92224.11804.70783.28384.11802.93271.78441.7751
H132.45353.07803.80541.09663.28382.93274.11803.92224.70784.11801.78441.7751

picture of trimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C2 H5 111.779 P1 C2 H6 109.678
P1 C2 H7 109.678 P1 C3 H8 111.779
P1 C3 H9 109.678 P1 C3 H10 109.678
P1 C4 H11 111.779 P1 C4 H12 109.678
P1 C4 H13 109.678 C2 P1 C3 98.865
C2 P1 C4 98.865 C3 P1 C4 98.865
H5 C2 H6 108.774 H5 C2 H7 108.774
H6 C2 H7 108.075 H8 C3 H9 108.774
H8 C3 H10 108.774 H9 C3 H10 108.075
H11 C4 H12 108.774 H11 C4 H13 108.774
H12 C4 H13 108.075
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability