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

using model chemistry: QCISD/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-460.304576
Energy at 298.15K-460.314339
HF Energy-459.593553
Nuclear repulsion energy177.165214
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(2df,p)
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 3163 2996 28.67      
2 A1 3073 2911 15.11      
3 A1 1515 1435 6.35      
4 A1 1374 1302 3.07      
5 A1 997 944 33.67      
6 A1 671 636 0.35      
7 A1 296 281 0.20      
8 A2 3171 3005 0.00      
9 A2 1492 1414 0.00      
10 A2 803 761 0.00      
11 A2 185 175 0.00      
12 E 3172 3005 10.84      
12 E 3172 3005 10.84      
13 E 3162 2995 2.50      
13 E 3162 2995 2.50      
14 E 3074 2913 11.25      
14 E 3074 2913 11.25      
15 E 1507 1428 6.48      
15 E 1507 1428 6.48      
16 E 1495 1417 3.91      
16 E 1495 1417 3.91      
17 E 1351 1280 1.75      
17 E 1351 1280 1.75      
18 E 977 926 22.06      
18 E 977 926 22.06      
19 E 857 812 0.68      
19 E 857 812 0.68      
20 E 730 692 11.35      
20 E 730 692 11.35      
21 E 253 240 0.09      
21 E 253 240 0.09      
22 E 209 198 0.01      
22 E 209 198 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 25158.4 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 23835.0 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(2df,p)
ABC
0.19255 0.19255 0.12404

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.607
C2 0.000 1.625 -0.280
C3 1.407 -0.813 -0.280
C4 -1.407 -0.813 -0.280
H5 0.000 1.501 -1.367
H6 -0.882 2.201 0.008
H7 0.882 2.201 0.008
H8 1.300 -0.750 -1.367
H9 2.348 -0.336 0.008
H10 1.465 -1.865 0.008
H11 -1.300 -0.750 -1.367
H12 -1.465 -1.865 0.008
H13 -2.348 -0.336 0.008

Atom - Atom Distances (Å)
  P1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
P11.85141.85141.85142.47972.44602.44602.47972.44602.44602.47972.44602.4460
C21.85142.81492.81491.09401.09261.09262.91803.07283.79612.91803.79613.0728
C31.85142.81492.81492.91803.79613.07281.09401.09261.09262.91803.07283.7961
C41.85142.81492.81492.91803.07283.79612.91803.79613.07281.09401.09261.0926
H52.47971.09402.91802.91801.77771.77772.59973.28303.92002.59973.92003.2830
H62.44601.09263.79613.07281.77771.76503.92004.10784.69533.28304.10782.9303
H72.44601.09263.07283.79611.77771.76503.28302.93034.10783.92004.69534.1078
H82.47972.91801.09402.91802.59973.92003.28301.77771.77772.59973.28303.9200
H92.44603.07281.09263.79613.28304.10782.93031.77771.76503.92004.10784.6953
H102.44603.79611.09263.07283.92004.69534.10781.77771.76503.28302.93034.1078
H112.47972.91802.91801.09402.59973.28303.92002.59973.92003.28301.77771.7777
H122.44603.79613.07281.09263.92004.10784.69533.28304.10782.93031.77771.7650
H132.44603.07283.79611.09263.28302.93034.10783.92004.69534.10781.77771.7650

picture of trimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C2 H5 112.103 P1 C2 H6 109.666
P1 C2 H7 109.666 P1 C3 H8 112.103
P1 C3 H9 109.666 P1 C3 H10 109.666
P1 C4 H11 112.103 P1 C4 H12 109.666
P1 C4 H13 109.666 C2 P1 C3 98.963
C2 P1 C4 98.963 C3 P1 C4 98.963
H5 C2 H6 108.781 H5 C2 H7 108.781
H6 C2 H7 107.739 H8 C3 H9 108.781
H8 C3 H10 108.781 H9 C3 H10 107.739
H11 C4 H12 108.781 H11 C4 H13 108.781
H12 C4 H13 107.739
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability