return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3PHCH3 (dimethylphosphine)

using model chemistry: MP2=FULL/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/STO-3G
 hartrees
Energy at 0K-415.958770
Energy at 298.15K-415.966661
HF Energy-415.810442
Nuclear repulsion energy112.797298
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/STO-3G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3545 3151 3.48      
2 A' 3537 3144 6.67      
3 A' 3360 2986 1.72      
4 A' 2874 2555 44.44      
5 A' 1749 1555 0.35      
6 A' 1747 1553 3.00      
7 A' 1597 1419 0.32      
8 A' 1205 1071 34.61      
9 A' 1114 991 19.02      
10 A' 882 784 3.61      
11 A' 813 722 1.47      
12 A' 312 278 0.98      
13 A' 188 168 0.00      
14 A" 3544 3150 0.61      
15 A" 3538 3145 1.11      
16 A" 3362 2988 2.45      
17 A" 1747 1553 1.84      
18 A" 1744 1550 0.98      
19 A" 1581 1405 4.69      
20 A" 1218 1083 35.74      
21 A" 998 887 0.73      
22 A" 888 789 0.60      
23 A" 862 766 7.98      
24 A" 182 162 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 21292.5 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 18926.9 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 MP2=FULL/STO-3G
ABC
0.51376 0.23646 0.17934

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.039 -0.688 0.000
H2 1.351 -0.871 0.000
C3 -0.039 0.537 1.403
C4 -0.039 0.537 -1.403
H5 -1.030 1.008 1.501
H6 -1.030 1.008 -1.501
H7 0.178 0.026 2.355
H8 0.178 0.026 -2.355
H9 0.704 1.342 1.275
H10 0.704 1.342 -1.275

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.40241.86281.86282.47222.47222.47012.47012.50962.5096
H21.40242.42582.42583.38453.38452.77942.77942.63462.6346
C31.86282.42582.80621.10173.10421.10193.79861.10262.8933
C41.86282.42582.80623.10421.10173.79861.10192.89331.1026
H52.47223.38451.10173.10423.00141.77624.15811.78023.2898
H62.47223.38453.10421.10173.00144.15811.77623.28981.7802
H72.47012.77941.10193.79861.77624.15814.70941.78153.8965
H82.47012.77943.79861.10194.15811.77624.70943.89651.7815
H92.50962.63461.10262.89331.78023.28981.78153.89652.5500
H102.50962.63462.89331.10263.28981.78023.89651.78152.5500

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 110.362 P1 C3 H7 110.199
P1 C3 H9 113.110 P1 C4 H6 110.362
P1 C4 H8 110.199 P1 C4 H10 113.110
H2 P1 C3 94.920 H2 P1 C4 94.920
C3 P1 C4 97.743 H5 C3 H7 107.417
H5 C3 H9 107.721 H6 C4 H8 107.417
H6 C4 H10 107.721 H7 C3 H9 107.825
H8 C4 H10 107.825
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability