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All results from a given calculation for CH3PHCH3 (dimethylphosphine)

using model chemistry: QCISD(T)/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 QCISD(T)/aug-cc-pVTZ
 hartrees
Energy at 0K-421.190918
Energy at 298.15K-421.198680
HF Energy-420.592809
Nuclear repulsion energy112.971599
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)/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' 3121 3017        
2 A' 3112 3009        
3 A' 3028 2927        
4 A' 2379 2300        
5 A' 1487 1438        
6 A' 1486 1437        
7 A' 1331 1287        
8 A' 1014 980        
9 A' 969 937        
10 A' 719 695        
11 A' 666 644        
12 A' 258 249        
13 A' 195 189        
14 A" 3121 3018        
15 A" 3114 3011        
16 A" 3030 2930        
17 A" 1479 1429        
18 A" 1473 1424        
19 A" 1316 1272        
20 A" 1028 994        
21 A" 835 807        
22 A" 727 703        
23 A" 707 684        
24 A" 182 176        

Unscaled Zero Point Vibrational Energy (zpe) 18388.5 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 17778.0 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)/aug-cc-pVTZ
ABC
0.52643 0.23357 0.17913

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.038 -0.672 0.000
H2 1.358 -0.939 0.000
C3 -0.038 0.533 1.417
C4 -0.038 0.533 -1.417
H5 -1.027 0.993 1.483
H6 -1.027 0.993 -1.483
H7 0.149 -0.001 2.351
H8 0.149 -0.001 -2.351
H9 0.711 1.319 1.294
H10 0.711 1.319 -1.294

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.42161.86051.86052.43952.43952.45202.45202.48972.4897
H21.42162.47502.47503.40933.40932.80512.80512.68132.6813
C31.86052.47502.83381.09283.09851.09193.80991.09242.9197
C41.86052.47502.83383.09851.09283.80991.09192.91971.0924
H52.43953.40931.09283.09852.96651.76744.13171.77923.2925
H62.43953.40933.09851.09282.96654.13171.76743.29251.7792
H72.45202.80511.09193.80991.76744.13174.70151.78153.9163
H82.45202.80513.80991.09194.13171.76744.70153.91631.7815
H92.48972.68131.09242.91971.77923.29251.78153.91632.5871
H102.48972.68132.91971.09243.29251.77923.91631.78152.5871

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 108.574 P1 C3 H7 109.536
P1 C3 H9 112.327 P1 C4 H6 108.574
P1 C4 H8 109.536 P1 C4 H10 112.327
H2 P1 C3 96.985 H2 P1 C4 96.985
C3 P1 C4 99.208 H5 C3 H7 107.993
H5 C3 H9 109.015 H6 C4 H8 107.993
H6 C4 H10 109.015 H7 C3 H9 109.296
H8 C4 H10 109.296
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability