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All results from a given calculation for CH3PHCH3 (dimethylphosphine)

using model chemistry: QCISD(T)/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 QCISD(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-421.063294
Energy at 298.15K-421.070976
HF Energy-420.552403
Nuclear repulsion energy111.747676
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-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' 3112 3043        
2 A' 3104 3035        
3 A' 3014 2947        
4 A' 2358 2306        
5 A' 1457 1424        
6 A' 1452 1420        
7 A' 1308 1279        
8 A' 1000 977        
9 A' 954 933        
10 A' 711 695        
11 A' 650 636        
12 A' 252 246        
13 A' 188 183        
14 A" 3113 3044        
15 A" 3105 3036        
16 A" 3016 2949        
17 A" 1445 1413        
18 A" 1441 1409        
19 A" 1291 1262        
20 A" 1012 989        
21 A" 824 805        
22 A" 713 698        
23 A" 693 678        
24 A" 171 167        

Unscaled Zero Point Vibrational Energy (zpe) 18191.8 cm-1
Scaled (by 0.9778) Zero Point Vibrational Energy (zpe) 17788.0 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-pVDZ
ABC
0.51105 0.22976 0.17554

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.038 -0.684 0.000
H2 1.374 -0.943 0.000
C3 -0.038 0.542 1.428
C4 -0.038 0.542 -1.428
H5 -1.038 1.009 1.491
H6 -1.038 1.009 -1.491
H7 0.146 0.008 2.377
H8 0.146 0.008 -2.377
H9 0.721 1.335 1.304
H10 0.721 1.335 -1.304

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.43631.88141.88142.46792.46792.48272.48272.52022.5202
H21.43632.49762.49763.44333.44332.83972.83972.70472.7047
C31.88142.49762.85511.10573.12051.10493.84641.10502.9437
C41.88142.49762.85513.12051.10573.84641.10492.94371.1050
H52.46793.44331.10573.12052.98241.78624.16781.79893.3185
H62.46793.44333.12051.10572.98244.16781.78623.31851.7989
H72.48272.83971.10493.84641.78624.16784.75441.80093.9548
H82.48272.83973.84641.10494.16781.78624.75443.95481.8009
H92.52022.70471.10502.94371.79893.31851.80093.95482.6075
H102.52022.70472.94371.10503.31851.79893.95481.80092.6075

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 108.615 P1 C3 H7 109.727
P1 C3 H9 112.490 P1 C4 H6 108.615
P1 C4 H8 109.727 P1 C4 H10 112.490
H2 P1 C3 96.750 H2 P1 C4 96.750
C3 P1 C4 98.711 H5 C3 H7 107.812
H5 C3 H9 108.921 H6 C4 H8 107.812
H6 C4 H10 108.921 H7 C3 H9 109.161
H8 C4 H10 109.161
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability