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

using model chemistry: MP2=FULL/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=FULL/3-21G*
 hartrees
Energy at 0K-457.698081
Energy at 298.15K-457.708036
HF Energy-457.299688
Nuclear repulsion energy176.769143
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=FULL/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 3137 2973 33.94      
2 A1 3055 2896 21.99      
3 A1 1585 1502 9.78      
4 A1 1448 1372 4.30      
5 A1 1053 998 42.26      
6 A1 670 635 0.15      
7 A1 311 295 0.15      
8 A2 3149 2985 0.00      
9 A2 1561 1480 0.00      
10 A2 868 823 0.00      
11 A2 202 191 0.00      
12 E 3150 2986 13.23      
12 E 3150 2986 13.23      
13 E 3136 2973 3.86      
13 E 3136 2973 3.86      
14 E 3058 2899 11.58      
14 E 3058 2899 11.58      
15 E 1576 1494 10.82      
15 E 1576 1494 10.82      
16 E 1566 1485 5.98      
16 E 1566 1485 5.98      
17 E 1425 1351 6.20      
17 E 1425 1351 6.20      
18 E 1036 982 23.37      
18 E 1036 982 23.37      
19 E 920 872 1.05      
19 E 920 872 1.05      
20 E 729 692 10.09      
20 E 729 692 10.09      
21 E 265 252 0.10      
21 E 265 252 0.10      
22 E 219 208 0.01      
22 E 219 208 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 25598.6 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 24267.5 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=FULL/3-21G*
ABC
0.19172 0.19172 0.12370

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/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 1.495 -1.371
H6 -0.887 2.205 0.004
H7 0.887 2.205 0.004
H8 1.295 -0.747 -1.371
H9 2.353 -0.334 0.004
H10 1.466 -1.871 0.004
H11 -1.295 -0.747 -1.371
H12 -1.466 -1.871 0.004
H13 -2.353 -0.334 0.004

Atom - Atom Distances (Å)
  P1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
P11.85581.85581.85582.48232.45262.45262.48232.45262.45262.48232.45262.4526
C21.85582.81912.81911.09821.09641.09642.91633.07653.80382.91633.80383.0765
C31.85582.81912.81912.91633.80383.07651.09821.09641.09642.91633.07653.8038
C41.85582.81912.81912.91633.07653.80382.91633.80383.07651.09821.09641.0964
H52.48231.09822.91632.91631.78431.78432.58913.28213.92022.58913.92023.2821
H62.45261.09643.80383.07651.78431.77493.92024.11634.70603.28214.11632.9310
H72.45261.09643.07653.80381.78431.77493.28212.93104.11633.92024.70604.1163
H82.48232.91631.09822.91632.58913.92023.28211.78431.78432.58913.28213.9202
H92.45263.07651.09643.80383.28214.11632.93101.78431.77493.92024.11634.7060
H102.45263.80381.09643.07653.92024.70604.11631.78431.77493.28212.93104.1163
H112.48232.91632.91631.09822.58913.28213.92022.58913.92023.28211.78431.7843
H122.45263.80383.07651.09643.92024.11634.70603.28214.11632.93101.78431.7749
H132.45263.07653.80381.09643.28212.93104.11633.92024.70604.11631.78431.7749

picture of trimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C2 H5 111.770 P1 C2 H6 109.659
P1 C2 H7 109.659 P1 C3 H8 111.770
P1 C3 H9 109.659 P1 C3 H10 109.659
P1 C4 H11 111.770 P1 C4 H12 109.659
P1 C4 H13 109.659 C2 P1 C3 98.844
C2 P1 C4 98.844 C3 P1 C4 98.844
H5 C2 H6 108.793 H5 C2 H7 108.793
H6 C2 H7 108.086 H8 C3 H9 108.793
H8 C3 H10 108.793 H9 C3 H10 108.086
H11 C4 H12 108.793 H11 C4 H13 108.793
H12 C4 H13 108.086
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability