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All results from a given calculation for CH3PHCH3 (dimethylphosphine)

using model chemistry: MP2=FULL/6-31G**

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/6-31G**
 hartrees
Energy at 0K-420.974005
Energy at 298.15K-420.981854
HF Energy-420.538043
Nuclear repulsion energy113.416984
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/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3242 3030 11.05      
2 A' 3239 3026 22.93      
3 A' 3133 2927 13.03      
4 A' 2507 2342 106.36      
5 A' 1538 1438 5.58      
6 A' 1536 1435 7.53      
7 A' 1405 1313 0.95      
8 A' 1059 989 36.49      
9 A' 1012 945 33.29      
10 A' 746 697 2.93      
11 A' 696 650 2.22      
12 A' 265 248 0.31      
13 A' 199 186 0.08      
14 A" 3243 3030 5.00      
15 A" 3240 3028 0.15      
16 A" 3136 2930 12.70      
17 A" 1530 1430 6.63      
18 A" 1522 1422 3.32      
19 A" 1388 1297 1.42      
20 A" 1069 999 33.10      
21 A" 875 817 0.77      
22 A" 753 703 8.47      
23 A" 735 687 6.37      
24 A" 185 173 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 19125.1 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 17870.5 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/6-31G**
ABC
0.53565 0.23389 0.18005

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.038 -0.665 0.000
H2 1.343 -0.946 0.000
C3 -0.038 0.528 1.416
C4 -0.038 0.528 -1.416
H5 -1.023 0.981 1.498
H6 -1.023 0.981 -1.498
H7 0.157 -0.006 2.343
H8 0.157 -0.006 -2.343
H9 0.701 1.319 1.306
H10 0.701 1.319 -1.306

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.40891.85121.85122.43392.43392.44132.44132.48762.4876
H21.40892.46612.46613.39913.39912.78882.78882.69232.6923
C31.85122.46612.83121.08773.10861.08753.80101.08762.9290
C41.85122.46612.83123.10861.08773.80101.08752.92901.0876
H52.43393.39911.08773.10862.99531.75544.13711.76693.3086
H62.43393.39913.10861.08772.99534.13711.75543.30861.7669
H72.44132.78881.08753.80101.75544.13714.68531.76833.9200
H82.44132.78883.80101.08754.13711.75544.68533.92001.7683
H92.48762.69231.08762.92901.76693.30861.76833.92002.6124
H102.48762.69232.92901.08763.30861.76693.92001.76832.6124

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 109.034 P1 C3 H7 109.587
P1 C3 H9 113.072 P1 C4 H6 109.034
P1 C4 H8 109.587 P1 C4 H10 113.072
H2 P1 C3 97.374 H2 P1 C4 97.374
C3 P1 C4 99.756 H5 C3 H7 107.603
H5 C3 H9 108.629 H6 C4 H8 107.603
H6 C4 H10 108.629 H7 C3 H9 108.766
H8 C4 H10 108.766
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability