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

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-460.377616
Energy at 298.15K-460.369946
HF Energy-459.566846
Nuclear repulsion energy176.728686
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 CBS-Q
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 3259 3259 56.55      
2 A1 3180 3180 23.87      
3 A1 1619 1619 7.66      
4 A1 1489 1489 2.65      
5 A1 1073 1073 41.68      
6 A1 693 693 0.53      
7 A1 311 311 0.42      
8 A2 3266 3266 0.00      
9 A2 1598 1598 0.00      
10 A2 866 866 0.00      
11 A2 198 198 0.00      
12 E 3267 3267 26.56      
12 E 3267 3267 26.56      
13 E 3257 3257 5.28      
13 E 3257 3257 5.28      
14 E 3178 3178 23.97      
14 E 3178 3178 23.97      
15 E 1612 1612 9.07      
15 E 1612 1612 9.07      
16 E 1600 1600 4.59      
16 E 1600 1600 4.59      
17 E 1465 1465 3.06      
17 E 1465 1465 3.06      
18 E 1050 1050 24.88      
18 E 1050 1050 24.88      
19 E 922 922 0.02      
19 E 922 922 0.02      
20 E 757 757 12.53      
20 E 757 757 12.53      
21 E 265 265 0.19      
21 E 265 265 0.19      
22 E 222 222 0.00      
22 E 222 222 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 26370.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 26370.9 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 CBS-Q
ABC
0.19178 0.19178 0.12351

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.589
C2 0.000 1.642 -0.273
C3 1.422 -0.821 -0.273
C4 -1.422 -0.821 -0.273
H5 0.000 1.546 -1.358
H6 -0.878 2.213 0.024
H7 0.878 2.213 0.024
H8 1.339 -0.773 -1.358
H9 2.356 -0.346 0.024
H10 1.478 -1.867 0.024
H11 -1.339 -0.773 -1.358
H12 -1.478 -1.867 0.024
H13 -2.356 -0.346 0.024

Atom - Atom Distances (Å)
  P1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
P11.85481.85481.85482.48642.44722.44722.48642.44722.44722.48642.44722.4472
C21.85482.84452.84451.08931.08831.08832.96713.09703.81902.96713.81903.0970
C31.85482.84452.84452.96713.81903.09701.08931.08831.08832.96713.09703.8190
C41.85482.84452.84452.96713.09703.81902.96713.81903.09701.08931.08831.0883
H52.48641.08932.96712.96711.76761.76762.67783.32253.96732.67783.96733.3225
H62.44721.08833.81903.09701.76761.75553.96734.12384.71113.32254.12382.9556
H72.44721.08833.09703.81901.76761.75553.32252.95564.12383.96734.71114.1238
H82.48642.96711.08932.96712.67783.96733.32251.76761.76762.67783.32253.9673
H92.44723.09701.08833.81903.32254.12382.95561.76761.75553.96734.12384.7111
H102.44723.81901.08833.09703.96734.71114.12381.76761.75553.32252.95564.1238
H112.48642.96712.96711.08932.67783.32253.96732.67783.96733.32251.76761.7676
H122.44723.81903.09701.08833.96734.12384.71113.32254.12382.95561.76761.7555
H132.44723.09703.81901.08833.32252.95564.12383.96734.71114.12381.76761.7555

picture of trimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C2 H5 112.630 P1 C2 H6 109.744
P1 C2 H7 109.744 P1 C3 H8 112.630
P1 C3 H9 109.744 P1 C3 H10 109.744
P1 C4 H11 112.630 P1 C4 H12 109.744
P1 C4 H13 109.744 C2 P1 C3 100.131
C2 P1 C4 100.131 C3 P1 C4 100.131
H5 C2 H6 108.529 H5 C2 H7 108.529
H6 C2 H7 107.522 H8 C3 H9 108.529
H8 C3 H10 108.529 H9 C3 H10 107.522
H11 C4 H12 108.529 H11 C4 H13 108.529
H12 C4 H13 107.522
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability