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All results from a given calculation for CH3PHCH3 (dimethylphosphine)

using model chemistry: MP4=FULL/aug-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 MP4=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-421.076028
Energy at 298.15K-421.083725
HF Energy-420.552711
Nuclear repulsion energy112.004631
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 MP4=FULL/aug-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' 3128 3050        
2 A' 3119 3042        
3 A' 3024 2949        
4 A' 2385 2326        
5 A' 1460 1423        
6 A' 1455 1419        
7 A' 1310 1277        
8 A' 999 974        
9 A' 953 929        
10 A' 714 696        
11 A' 655 639        
12 A' 253 246        
13 A' 191 186        
14 A" 3128 3051        
15 A" 3120 3043        
16 A" 3027 2952        
17 A" 1448 1412        
18 A" 1444 1408        
19 A" 1292 1260        
20 A" 1015 990        
21 A" 821 801        
22 A" 716 698        
23 A" 696 678        
24 A" 173 168        

Unscaled Zero Point Vibrational Energy (zpe) 18261.7 cm-1
Scaled (by 0.9752) Zero Point Vibrational Energy (zpe) 17808.8 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 MP4=FULL/aug-cc-pVDZ
ABC
0.51336 0.23095 0.17643

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.038 -0.682 0.000
H2 1.371 -0.945 0.000
C3 -0.038 0.540 1.424
C4 -0.038 0.540 -1.424
H5 -1.037 1.008 1.485
H6 -1.037 1.008 -1.485
H7 0.144 0.007 2.373
H8 0.144 0.007 -2.373
H9 0.721 1.332 1.301
H10 0.721 1.332 -1.301

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.43301.87651.87652.46102.46102.47732.47732.51512.5151
H21.43302.49342.49343.43683.43682.83562.83562.70192.7019
C31.87652.49342.84761.10433.11051.10343.83791.10372.9371
C41.87652.49342.84763.11051.10433.83791.10342.93711.1037
H52.46103.43681.10433.11052.96941.78404.15611.79653.3095
H62.46103.43683.11051.10432.96944.15611.78403.30951.7965
H72.47732.83561.10343.83791.78404.15614.74521.79953.9476
H82.47732.83563.83791.10344.15611.78404.74523.94761.7995
H92.51512.70191.10372.93711.79653.30951.79953.94762.6016
H102.51512.70192.93711.10373.30951.79653.94761.79952.6016

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 108.514 P1 C3 H7 109.736
P1 C3 H9 112.517 P1 C4 H6 108.514
P1 C4 H8 109.736 P1 C4 H10 112.517
H2 P1 C3 96.861 H2 P1 C4 96.861
C3 P1 C4 98.709 H5 C3 H7 107.818
H5 C3 H9 108.908 H6 C4 H8 107.818
H6 C4 H10 108.908 H7 C3 H9 109.231
H8 C4 H10 109.231
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability