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All results from a given calculation for CH3PHCH3 (dimethylphosphine)

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCD/6-31G(2df,p)
 hartrees
Energy at 0K-421.077880
Energy at 298.15K-421.085697
HF Energy-420.548017
Nuclear repulsion energy113.168089
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 CCD/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 A' 3195 3027 10.01      
2 A' 3190 3022 13.07      
3 A' 3098 2934 9.72      
4 A' 2448 2319 74.57      
5 A' 1515 1435 10.59      
6 A' 1514 1434 0.76      
7 A' 1372 1300 0.90      
8 A' 1040 985 31.77      
9 A' 990 938 28.41      
10 A' 738 699 1.46      
11 A' 685 649 2.01      
12 A' 263 249 0.14      
13 A' 196 186 0.15      
14 A" 3196 3027 3.20      
15 A" 3191 3022 0.69      
16 A" 3100 2936 9.98      
17 A" 1507 1427 5.46      
18 A" 1500 1421 2.41      
19 A" 1356 1285 0.43      
20 A" 1055 999 26.24      
21 A" 851 806 1.04      
22 A" 744 705 6.66      
23 A" 726 688 7.46      
24 A" 187 177 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 18828.7 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 17834.5 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 CCD/6-31G(2df,p)
ABC
0.53174 0.23346 0.17952

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.038 -0.668 0.000
H2 1.350 -0.946 0.000
C3 -0.038 0.530 1.417
C4 -0.038 0.530 -1.417
H5 -1.024 0.993 1.488
H6 -1.024 0.993 -1.488
H7 0.145 -0.006 2.349
H8 0.145 -0.006 -2.349
H9 0.711 1.315 1.306
H10 0.711 1.315 -1.306

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.41541.85521.85522.43802.43802.44762.44762.49002.4900
H21.41542.47222.47223.40723.40722.80292.80292.68872.6887
C31.85522.47222.83361.09173.10221.09113.80861.09102.9314
C41.85522.47222.83363.10221.09173.80861.09112.93141.0910
H52.43803.40721.09173.10222.97571.76244.13381.77403.3047
H62.43803.40723.10221.09172.97574.13381.76243.30471.7740
H72.44762.80291.09113.80861.76244.13384.69891.77663.9284
H82.44762.80293.80861.09114.13381.76244.69893.92841.7766
H92.49002.68871.09102.93141.77403.30471.77663.92842.6125
H102.49002.68872.93141.09103.30471.77403.92841.77662.6125

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 108.876 P1 C3 H7 109.606
P1 C3 H9 112.795 P1 C4 H6 108.876
P1 C4 H8 109.606 P1 C4 H10 112.795
H2 P1 C3 97.296 H2 P1 C4 97.296
C3 P1 C4 99.585 H5 C3 H7 107.684
H5 C3 H9 108.735 H6 C4 H8 107.684
H6 C4 H10 108.735 H7 C3 H9 109.012
H8 C4 H10 109.012
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability