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All results from a given calculation for CH3PHCH3 (dimethylphosphine)

using model chemistry: QCISD(T)/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD(T)/cc-pVDZ
 hartrees
Energy at 0K-421.036068
Energy at 298.15K-421.043793
HF Energy-420.547865
Nuclear repulsion energy111.945031
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 QCISD(T)/cc-pVDZ
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' 3140 2992        
2 A' 3135 2988        
3 A' 3039 2896        
4 A' 2391 2278        
5 A' 1468 1399        
6 A' 1467 1399        
7 A' 1322 1260        
8 A' 1012 964        
9 A' 959 914        
10 A' 721 687        
11 A' 661 630        
12 A' 257 245        
13 A' 191 182        
14 A" 3140 2992        
15 A" 3136 2989        
16 A" 3041 2898        
17 A" 1460 1392        
18 A" 1455 1386        
19 A" 1304 1243        
20 A" 1022 974        
21 A" 827 788        
22 A" 720 687        
23 A" 701 668        
24 A" 180 171        

Unscaled Zero Point Vibrational Energy (zpe) 18373.3 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 17511.6 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 QCISD(T)/cc-pVDZ
ABC
0.51493 0.23023 0.17625

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.038 -0.681 0.000
H2 1.372 -0.934 0.000
C3 -0.038 0.539 1.425
C4 -0.038 0.539 -1.425
H5 -1.041 1.002 1.498
H6 -1.041 1.002 -1.498
H7 0.154 0.000 2.372
H8 0.154 0.000 -2.372
H9 0.716 1.339 1.306
H10 0.716 1.339 -1.306

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.43241.87561.87562.46582.46582.47532.47532.52062.5206
H21.43242.48722.48723.43653.43652.82522.82522.70172.7017
C31.87562.48722.85061.10673.12531.10603.84031.10632.9446
C41.87562.48722.85063.12531.10673.84031.10602.94461.1063
H52.46583.43651.10673.12532.99681.78704.17261.79943.3266
H62.46583.43653.12531.10672.99684.17261.78703.32661.7994
H72.47532.82521.10603.84031.78704.17264.74431.80143.9546
H82.47532.82523.84031.10604.17261.78704.74433.95461.8014
H92.52062.70171.10632.94461.79943.32661.80143.95462.6124
H102.52062.70172.94461.10633.32661.79943.95461.80142.6124

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 108.793 P1 C3 H7 109.514
P1 C3 H9 112.851 P1 C4 H6 108.793
P1 C4 H8 109.514 P1 C4 H10 112.851
H2 P1 C3 96.590 H2 P1 C4 96.590
C3 P1 C4 98.913 H5 C3 H7 107.724
H5 C3 H9 108.801 H6 C4 H8 107.724
H6 C4 H10 108.801 H7 C3 H9 109.027
H8 C4 H10 109.027
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability