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

using model chemistry: QCISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-460.128405
Energy at 298.15K-460.138151
HF Energy-459.566443
Nuclear repulsion energy176.420703
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 QCISD/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 A1 3139 2989 41.89      
2 A1 3055 2909 23.19      
3 A1 1532 1459 8.98      
4 A1 1410 1343 3.34      
5 A1 1020 972 41.90      
6 A1 671 639 0.47      
7 A1 295 281 0.41      
8 A2 3151 3001 0.00      
9 A2 1510 1438 0.00      
10 A2 830 791 0.00      
11 A2 175 167 0.00      
12 E 3152 3001 18.15      
12 E 3152 3001 18.15      
13 E 3138 2988 4.76      
13 E 3138 2988 4.76      
14 E 3055 2910 15.92      
14 E 3055 2910 15.92      
15 E 1525 1452 9.66      
15 E 1525 1452 9.66      
16 E 1514 1441 4.89      
16 E 1514 1441 4.89      
17 E 1387 1321 4.55      
17 E 1387 1321 4.55      
18 E 1001 954 22.81      
18 E 1001 954 22.81      
19 E 883 841 0.31      
19 E 883 841 0.31      
20 E 733 698 11.12      
20 E 733 698 11.12      
21 E 254 242 0.16      
21 E 254 242 0.16      
22 E 205 195 0.01      
22 E 205 195 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 25238.9 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 24035.0 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 QCISD/6-31G*
ABC
0.19101 0.19101 0.12267

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.605
C2 0.000 1.634 -0.279
C3 1.415 -0.817 -0.279
C4 -1.415 -0.817 -0.279
H5 0.000 1.518 -1.371
H6 -0.885 2.213 0.010
H7 0.885 2.213 0.010
H8 1.315 -0.759 -1.371
H9 2.359 -0.340 0.010
H10 1.474 -1.873 0.010
H11 -1.315 -0.759 -1.371
H12 -1.474 -1.873 0.010
H13 -2.359 -0.340 0.010

Atom - Atom Distances (Å)
  P1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
P11.85761.85761.85762.49212.45662.45662.49212.45662.45662.49212.45662.4566
C21.85762.82992.82991.09851.09681.09682.94083.08953.81522.94083.81523.0895
C31.85762.82992.82992.94083.81523.08951.09851.09681.09682.94083.08953.8152
C41.85762.82992.82992.94083.08953.81522.94083.81523.08951.09851.09681.0968
H52.49211.09852.94082.94081.78201.78202.62963.30563.94762.62963.94763.3056
H62.45661.09683.81523.08951.78201.77073.94764.12844.71843.30564.12842.9477
H72.45661.09683.08953.81521.78201.77073.30562.94774.12843.94764.71844.1284
H82.49212.94081.09852.94082.62963.94763.30561.78201.78202.62963.30563.9476
H92.45663.08951.09683.81523.30564.12842.94771.78201.77073.94764.12844.7184
H102.45663.81521.09683.08953.94764.71844.12841.78201.77073.30562.94774.1284
H112.49212.94082.94081.09852.62963.30563.94762.62963.94763.30561.78201.7820
H122.45663.81523.08951.09683.94764.12844.71843.30564.12842.94771.78201.7707
H132.45663.08953.81521.09683.30562.94774.12843.94764.71844.12841.78201.7707

picture of trimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C2 H5 112.370 P1 C2 H6 109.813
P1 C2 H7 109.813 P1 C3 H8 112.370
P1 C3 H9 109.813 P1 C3 H10 109.813
P1 C4 H11 112.370 P1 C4 H12 109.813
P1 C4 H13 109.813 C2 P1 C3 99.230
C2 P1 C4 99.230 C3 P1 C4 99.230
H5 C2 H6 108.534 H5 C2 H7 108.534
H6 C2 H7 107.650 H8 C3 H9 108.534
H8 C3 H10 108.534 H9 C3 H10 107.650
H11 C4 H12 108.534 H11 C4 H13 108.534
H12 C4 H13 107.650
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability