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All results from a given calculation for CH3PHCH3 (dimethylphosphine)

using model chemistry: B3LYP/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/CEP-121G*
 hartrees
Energy at 0K-22.041885
Energy at 298.15K-22.049546
HF Energy-22.041885
Nuclear repulsion energy43.631905
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 B3LYP/CEP-121G*
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' 3099 3004 28.19      
2 A' 3095 3000 49.57      
3 A' 3014 2921 26.59      
4 A' 2311 2240 116.86      
5 A' 1494 1449 9.41      
6 A' 1493 1447 9.14      
7 A' 1343 1302 0.71      
8 A' 1009 979 29.74      
9 A' 961 932 31.01      
10 A' 712 691 1.29      
11 A' 640 620 2.27      
12 A' 247 239 0.27      
13 A' 186 180 0.17      
14 A" 3099 3005 15.51      
15 A" 3095 3000 0.08      
16 A" 3015 2922 30.12      
17 A" 1485 1439 10.67      
18 A" 1481 1436 1.63      
19 A" 1325 1285 0.70      
20 A" 1017 986 27.03      
21 A" 823 798 0.32      
22 A" 719 697 0.17      
23 A" 687 666 15.05      
24 A" 174 169 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 18261.6 cm-1
Scaled (by 0.9694) Zero Point Vibrational Energy (zpe) 17702.8 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 B3LYP/CEP-121G*
ABC
0.51901 0.22496 0.17350

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.038 -0.677 0.000
H2 1.382 -0.929 0.000
C3 -0.038 0.537 1.445
C4 -0.038 0.537 -1.445
H5 -1.036 0.985 1.535
H6 -1.036 0.985 -1.535
H7 0.166 -0.007 2.375
H8 0.166 -0.007 -2.375
H9 0.699 1.342 1.334
H10 0.699 1.342 -1.334

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.44281.88761.88762.47262.47262.47602.47602.52992.5299
H21.44282.50112.50113.44483.44482.82292.82292.72052.7205
C31.88762.50112.88981.09733.17411.09693.86371.09692.9859
C41.88762.50112.88983.17411.09733.86371.09692.98591.0969
H52.47263.44481.09733.17413.06981.77044.20891.78343.3725
H62.47263.44483.17411.09733.06984.20891.77043.37251.7834
H72.47602.82291.09693.86371.77044.20894.74971.78503.9828
H82.47602.82293.86371.09694.20891.77044.74973.98281.7850
H92.52992.72051.09692.98591.78343.37251.78503.98282.6689
H102.52992.72052.98591.09693.37251.78343.98281.78502.6689

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 108.970 P1 C3 H7 109.235
P1 C3 H9 113.245 P1 C4 H6 108.970
P1 C4 H8 109.235 P1 C4 H10 113.245
H2 P1 C3 96.440 H2 P1 C4 96.440
C3 P1 C4 99.894 H5 C3 H7 107.583
H5 C3 H9 108.738 H6 C4 H8 107.583
H6 C4 H10 108.738 H7 C3 H9 108.916
H8 C4 H10 108.916
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.094      
2 H -0.010      
3 C -0.567      
4 C -0.567      
5 H 0.173      
6 H 0.173      
7 H 0.181      
8 H 0.181      
9 H 0.170      
10 H 0.170      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.393 1.201 0.000 1.263
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.651 -1.350 0.000
y -1.350 -29.711 0.000
z 0.000 0.000 -26.292
Traceless
 xyz
x 0.350 -1.350 0.000
y -1.350 -2.739 0.000
z 0.000 0.000 2.389
Polar
3z2-r24.778
x2-y22.060
xy-1.350
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.662 -0.287 0.000
y -0.287 7.184 0.000
z 0.000 0.000 8.354


<r2> (average value of r2) Å2
<r2> 69.787
(<r2>)1/2 8.354