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All results from a given calculation for CH3PHCH3 (dimethylphosphine)

using model chemistry: QCISD(T)=FULL/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)=FULL/cc-pVDZ
 hartrees
Energy at 0K-421.048421
Energy at 298.15K-421.056151
HF Energy-420.548045
Nuclear repulsion energy112.086046
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)=FULL/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' 3146 3017        
2 A' 3141 3012        
3 A' 3044 2920        
4 A' 2403 2305        
5 A' 1470 1410        
6 A' 1469 1409        
7 A' 1323 1269        
8 A' 1013 971        
9 A' 959 919        
10 A' 722 692        
11 A' 663 636        
12 A' 258 247        
13 A' 191 184        
14 A" 3147 3018        
15 A" 3142 3013        
16 A" 3046 2921        
17 A" 1462 1402        
18 A" 1457 1397        
19 A" 1305 1252        
20 A" 1024 982        
21 A" 826 792        
22 A" 722 692        
23 A" 702 673        
24 A" 179 172        

Unscaled Zero Point Vibrational Energy (zpe) 18407.7 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 17653.0 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)=FULL/cc-pVDZ
ABC
0.51618 0.23086 0.17672

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.038 -0.680 0.000
H2 1.370 -0.934 0.000
C3 -0.038 0.538 1.423
C4 -0.038 0.538 -1.423
H5 -1.040 1.000 1.496
H6 -1.040 1.000 -1.496
H7 0.154 0.001 2.370
H8 0.154 0.001 -2.370
H9 0.715 1.338 1.303
H10 0.715 1.338 -1.303

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.43061.87311.87312.46252.46252.47322.47322.51712.5171
H21.43062.48472.48473.43283.43282.82282.82282.69942.6994
C31.87312.48472.84671.10573.12101.10503.83581.10522.9397
C41.87312.48472.84673.12101.10573.83581.10502.93971.1052
H52.46253.43281.10573.12102.99231.78524.16771.79753.3213
H62.46253.43283.12101.10572.99234.16771.78523.32131.7975
H72.47322.82281.10503.83581.78524.16774.73981.79953.9489
H82.47322.82283.83581.10504.16771.78524.73983.94891.7995
H92.51712.69941.10522.93971.79753.32131.79953.94892.6067
H102.51712.69942.93971.10523.32131.79753.94891.79952.6067

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 108.772 P1 C3 H7 109.586
P1 C3 H9 112.826 P1 C4 H6 108.772
P1 C4 H8 109.586 P1 C4 H10 112.826
H2 P1 C3 96.628 H2 P1 C4 96.628
C3 P1 C4 98.909 H5 C3 H7 107.717
H5 C3 H9 108.791 H6 C4 H8 107.717
H6 C4 H10 108.791 H7 C3 H9 109.017
H8 C4 H10 109.017
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability