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All results from a given calculation for CH3PHCH3 (dimethylphosphine)

using model chemistry: QCISD(T)=FULL/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-421.041387
Energy at 298.15K-421.049133
HF Energy-420.539366
Nuclear repulsion energy112.943640
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/6-31+G**
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' 3181 3181        
2 A' 3175 3175        
3 A' 3082 3082        
4 A' 2438 2438        
5 A' 1507 1507        
6 A' 1500 1500        
7 A' 1389 1389        
8 A' 1039 1039        
9 A' 991 991        
10 A' 731 731        
11 A' 677 677        
12 A' 260 260        
13 A' 186 186        
14 A" 3181 3181        
15 A" 3176 3176        
16 A" 3084 3084        
17 A" 1500 1500        
18 A" 1490 1490        
19 A" 1371 1371        
20 A" 1042 1042        
21 A" 858 858        
22 A" 732 732        
23 A" 718 718        
24 A" 166 166        

Unscaled Zero Point Vibrational Energy (zpe) 18736.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18736.9 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 QCISD(T)=FULL/6-31+G**
ABC
0.52790 0.23274 0.17865

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.038 -0.671 0.000
H2 1.350 -0.945 0.000
C3 -0.038 0.532 1.419
C4 -0.038 0.532 -1.419
H5 -1.024 0.993 1.495
H6 -1.024 0.993 -1.495
H7 0.153 0.002 2.353
H8 0.153 0.002 -2.353
H9 0.708 1.321 1.305
H10 0.708 1.321 -1.305

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.41431.86071.86072.44502.44502.45532.45532.49542.4954
H21.41432.47392.47393.40963.40962.80512.80512.69182.6918
C31.86072.47392.83801.09143.11091.09093.81421.09142.9320
C41.86072.47392.83803.11091.09143.81421.09092.93201.0914
H52.44503.40961.09143.11092.99031.76154.14461.77353.3088
H62.44503.40963.11091.09142.99034.14461.76153.30881.7735
H72.45532.80511.09093.81421.76154.14464.70681.77393.9279
H82.45532.80513.81421.09094.14461.76154.70683.92791.7739
H92.49542.69181.09142.93201.77353.30881.77393.92792.6094
H102.49542.69182.93201.09143.30881.77353.92791.77392.6094

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 109.035 P1 C3 H7 109.813
P1 C3 H9 112.797 P1 C4 H6 109.035
P1 C4 H8 109.813 P1 C4 H10 112.797
H2 P1 C3 97.177 H2 P1 C4 97.177
C3 P1 C4 99.390 H5 C3 H7 107.635
H5 C3 H9 108.677 H6 C4 H8 107.635
H6 C4 H10 108.677 H7 C3 H9 108.748
H8 C4 H10 108.748
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability