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All results from a given calculation for CH3PHCH3 (dimethylphosphine)

using model chemistry: CCSD(T)/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD(T)/6-31G*
 hartrees
Energy at 0K-420.953251
Energy at 298.15K-420.961026
HF Energy-420.525099
Nuclear repulsion energy112.542823
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 CCSD(T)/6-31G*
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' 3142 3023        
2 A' 3138 3019        
3 A' 3052 2937        
4 A' 2385 2295        
5 A' 1522 1465        
6 A' 1521 1464        
7 A' 1398 1345        
8 A' 1045 1005        
9 A' 1005 967        
10 A' 733 705        
11 A' 678 652        
12 A' 262 252        
13 A' 192 185        
14 A" 3142 3023        
15 A" 3138 3020        
16 A" 3054 2938        
17 A" 1514 1457        
18 A" 1509 1452        
19 A" 1381 1329        
20 A" 1044 1005        
21 A" 870 837        
22 A" 735 708        
23 A" 724 696        
24 A" 180 173        

Unscaled Zero Point Vibrational Energy (zpe) 18682.3 cm-1
Scaled (by 0.9621) Zero Point Vibrational Energy (zpe) 17974.3 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 CCSD(T)/6-31G*
ABC
0.52579 0.23103 0.17764

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.038 -0.671 0.000
H2 1.362 -0.954 0.000
C3 -0.038 0.532 1.423
C4 -0.038 0.532 -1.423
H5 -1.031 0.993 1.504
H6 -1.031 0.993 -1.504
H7 0.156 -0.004 2.361
H8 0.156 -0.004 -2.361
H9 0.708 1.329 1.312
H10 0.708 1.329 -1.312

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.42871.86411.86412.45342.45342.46152.46152.50642.5064
H21.42872.48932.48933.43263.43262.81662.81662.71362.7136
C31.86412.48932.84701.09763.12571.09743.82731.09762.9458
C41.86412.48932.84703.12571.09763.82731.09742.94581.0976
H52.45343.43261.09763.12573.00861.77124.16471.78203.3276
H62.45343.43263.12571.09763.00864.16471.77123.32761.7820
H72.46152.81661.09743.82731.77124.16474.72241.78363.9468
H82.46152.81663.82731.09744.16471.77124.72243.94681.7836
H92.50642.71361.09762.94581.78203.32761.78363.94682.6249
H102.50642.71362.94581.09763.32761.78203.94681.78362.6249

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 109.107 P1 C3 H7 109.708
P1 C3 H9 113.052 P1 C4 H6 109.107
P1 C4 H8 109.708 P1 C4 H10 113.052
H2 P1 C3 97.343 H2 P1 C4 97.343
C3 P1 C4 99.569 H5 C3 H7 107.592
H5 C3 H9 108.532 H6 C4 H8 107.592
H6 C4 H10 108.532 H7 C3 H9 108.700
H8 C4 H10 108.700
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability