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All results from a given calculation for CH3PHCH3 (dimethylphosphine)

using model chemistry: QCISD/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/cc-pVDZ
 hartrees
Energy at 0K-421.022748
Energy at 298.15K-421.030508
HF Energy-420.548147
Nuclear repulsion energy112.085344
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/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3155 3027 15.48      
2 A' 3150 3022 25.85      
3 A' 3056 2932 17.22      
4 A' 2407 2309 99.52      
5 A' 1478 1418 7.35      
6 A' 1477 1417 3.89      
7 A' 1335 1281 0.44      
8 A' 1020 979 25.09      
9 A' 968 928 22.76      
10 A' 727 698 1.32      
11 A' 668 641 2.32      
12 A' 260 250 0.26      
13 A' 193 185 0.06      
14 A" 3155 3027 8.00      
15 A" 3150 3022 0.35      
16 A" 3057 2933 21.33      
17 A" 1470 1411 4.94      
18 A" 1464 1405 2.91      
19 A" 1318 1264 0.00      
20 A" 1032 991 25.55      
21 A" 835 801 0.81      
22 A" 728 699 5.39      
23 A" 710 681 10.28      
24 A" 182 175 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 18497.8 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 17746.8 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 QCISD/cc-pVDZ
ABC
0.51813 0.23027 0.17657

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.038 -0.678 0.000
H2 1.369 -0.937 0.000
C3 -0.038 0.536 1.425
C4 -0.038 0.536 -1.425
H5 -1.038 1.001 1.499
H6 -1.038 1.001 -1.499
H7 0.153 -0.002 2.371
H8 0.153 -0.002 -2.371
H9 0.716 1.335 1.308
H10 0.716 1.335 -1.308

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.43041.87261.87262.46332.46332.47242.47242.51632.5163
H21.43042.48622.48623.43473.43472.82332.82332.70132.7013
C31.87262.48622.85091.10533.12581.10463.83881.10472.9460
C41.87262.48622.85093.12581.10533.83881.10462.94601.1047
H52.46333.43471.10533.12582.99881.78464.17171.79633.3275
H62.46333.43473.12581.10532.99884.17171.78463.32751.7963
H72.47242.82331.10463.83881.78464.17174.74121.79843.9546
H82.47242.82333.83881.10464.17171.78464.74123.95461.7984
H92.51632.70131.10472.94601.79633.32751.79843.95462.6163
H102.51632.70132.94601.10473.32751.79633.95461.79842.6163

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 108.880 P1 C3 H7 109.574
P1 C3 H9 112.821 P1 C4 H6 108.880
P1 C4 H8 109.574 P1 C4 H10 112.821
H2 P1 C3 96.739 H2 P1 C4 96.739
C3 P1 C4 99.142 H5 C3 H7 107.718
H5 C3 H9 108.737 H6 C4 H8 107.718
H6 C4 H10 108.737 H7 C3 H9 108.980
H8 C4 H10 108.980
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability