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All results from a given calculation for CH3PHCH3 (dimethylphosphine)

using model chemistry: CID/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CID/6-311G*
 hartrees
Energy at 0K-420.943278
Energy at 298.15K-420.951164
HF Energy-420.560364
Nuclear repulsion energy113.375653
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 CID/6-311G*
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' 3203 2976 15.80      
2 A' 3199 2973 28.37      
3 A' 3116 2895 19.51      
4 A' 2430 2257 106.12      
5 A' 1547 1437 9.01      
6 A' 1545 1436 12.56      
7 A' 1428 1327 2.79      
8 A' 1070 994 50.44      
9 A' 1026 953 41.42      
10 A' 753 700 3.50      
11 A' 703 653 2.91      
12 A' 273 254 0.58      
13 A' 198 184 0.20      
14 A" 3203 2976 8.43      
15 A" 3200 2973 0.00      
16 A" 3116 2895 20.09      
17 A" 1537 1428 11.06      
18 A" 1531 1422 1.33      
19 A" 1410 1310 6.37      
20 A" 1082 1005 34.51      
21 A" 885 822 0.60      
22 A" 760 706 5.24      
23 A" 746 693 11.40      
24 A" 183 170 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 19071.8 cm-1
Scaled (by 0.9291) Zero Point Vibrational Energy (zpe) 17719.6 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 CID/6-311G*
ABC
0.53703 0.23346 0.18002

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.038 -0.664 0.000
H2 1.350 -0.947 0.000
C3 -0.038 0.526 1.416
C4 -0.038 0.526 -1.416
H5 -1.020 0.989 1.499
H6 -1.020 0.989 -1.499
H7 0.149 -0.009 2.346
H8 0.149 -0.009 -2.346
H9 0.707 1.314 1.313
H10 0.707 1.314 -1.313

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.41641.84951.84952.43782.43782.44292.44292.48792.4879
H21.41642.47022.47023.40803.40802.79792.79792.69262.6926
C31.84952.47022.83221.08933.11071.08903.80471.08912.9370
C41.84952.47022.83223.11071.08933.80471.08902.93701.0891
H52.43783.40801.08933.11072.99751.75514.14081.76773.3164
H62.43783.40803.11071.08932.99754.14081.75513.31641.7677
H72.44292.79791.08903.80471.75514.14084.69241.76863.9311
H82.44292.79793.80471.08904.14081.75514.69243.93111.7686
H92.48792.69261.08912.93701.76773.31641.76863.93112.6268
H102.48792.69262.93701.08913.31641.76773.93111.76862.6268

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 109.359 P1 C3 H7 109.752
P1 C3 H9 113.137 P1 C4 H6 109.359
P1 C4 H8 109.752 P1 C4 H10 113.137
H2 P1 C3 97.406 H2 P1 C4 97.406
C3 P1 C4 99.935 H5 C3 H7 107.359
H5 C3 H9 108.481 H6 C4 H8 107.359
H6 C4 H10 108.481 H7 C3 H9 108.582
H8 C4 H10 108.582
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability