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All results from a given calculation for CH3PHCH3 (dimethylphosphine)

using model chemistry: MP2/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-421.122225
Energy at 298.15K-421.130020
HF Energy-420.593084
Nuclear repulsion energy113.468063
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/aug-cc-pVTZ
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' 3170 3021 7.71      
2 A' 3164 3015 13.94      
3 A' 3066 2921 13.45      
4 A' 2440 2325 76.79      
5 A' 1495 1425 11.03      
6 A' 1493 1423 2.79      
7 A' 1333 1270 2.08      
8 A' 1018 970 25.10      
9 A' 973 927 24.24      
10 A' 727 693 2.11      
11 A' 681 649 3.36      
12 A' 259 246 0.39      
13 A' 196 187 0.06      
14 A" 3171 3022 3.24      
15 A" 3166 3017 0.37      
16 A" 3070 2925 12.32      
17 A" 1486 1416 5.14      
18 A" 1479 1409 3.50      
19 A" 1317 1255 1.42      
20 A" 1037 989 23.78      
21 A" 840 800 0.41      
22 A" 739 705 9.81      
23 A" 716 682 6.52      
24 A" 186 178 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 18610.5 cm-1
Scaled (by 0.9529) Zero Point Vibrational Energy (zpe) 17733.9 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/aug-cc-pVTZ
ABC
0.53071 0.23589 0.18085

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.038 -0.669 0.000
H2 1.352 -0.939 0.000
C3 -0.038 0.531 1.410
C4 -0.038 0.531 -1.410
H5 -1.024 0.989 1.473
H6 -1.024 0.989 -1.473
H7 0.146 -0.001 2.342
H8 0.146 -0.001 -2.342
H9 0.710 1.314 1.289
H10 0.710 1.314 -1.289

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.41501.85151.85152.42802.42802.44202.44202.48032.4803
H21.41502.46522.46523.39593.39592.79592.79592.67312.6731
C31.85152.46522.81901.08963.08141.08903.79321.08902.9071
C41.85152.46522.81903.08141.08963.79321.08902.90711.0890
H52.42803.39591.08963.08142.94691.76154.11151.77403.2775
H62.42803.39593.08141.08962.94694.11151.76153.27751.7740
H72.44202.79591.08903.79321.76154.11154.68341.77673.9021
H82.44202.79593.79321.08904.11151.76154.68343.90211.7767
H92.48032.67311.08902.90711.77403.27751.77673.90212.5772
H102.48032.67312.90711.08903.27751.77403.90211.77672.5772

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 108.500 P1 C3 H7 109.556
P1 C3 H9 112.418 P1 C4 H6 108.500
P1 C4 H8 109.556 P1 C4 H10 112.418
H2 P1 C3 97.092 H2 P1 C4 97.092
C3 P1 C4 99.157 H5 C3 H7 107.910
H5 C3 H9 109.032 H6 C4 H8 107.910
H6 C4 H10 109.032 H7 C3 H9 109.319
H8 C4 H10 109.319
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability