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All results from a given calculation for CH3PHCH3 (dimethylphosphine)

using model chemistry: PBEPBE/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/3-21G*
 hartrees
Energy at 0K-419.405490
Energy at 298.15K-419.413225
HF Energy-419.405490
Nuclear repulsion energy112.107999
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 PBEPBE/3-21G*
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' 3059 2917 13.15      
2 A' 3056 2914 22.27      
3 A' 2972 2834 16.22      
4 A' 2313 2206 88.85      
5 A' 1504 1434 6.68      
6 A' 1498 1428 17.25      
7 A' 1349 1286 3.49      
8 A' 1026 978 39.54      
9 A' 980 935 43.19      
10 A' 732 698 0.46      
11 A' 647 617 1.34      
12 A' 251 240 0.07      
13 A' 193 184 0.33      
14 A" 3059 2917 5.25      
15 A" 3056 2914 0.01      
16 A" 2974 2836 15.33      
17 A" 1491 1422 16.63      
18 A" 1487 1418 0.04      
19 A" 1332 1270 6.91      
20 A" 1032 984 25.57      
21 A" 845 805 2.95      
22 A" 741 707 0.61      
23 A" 692 660 13.43      
24 A" 187 178 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 18237.0 cm-1
Scaled (by 0.9535) Zero Point Vibrational Energy (zpe) 17389.0 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 PBEPBE/3-21G*
ABC
0.51940 0.23008 0.17676

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.039 -0.678 0.000
H2 1.381 -0.896 0.000
C3 -0.039 0.535 1.426
C4 -0.039 0.535 -1.426
H5 -1.047 0.976 1.525
H6 -1.047 0.976 -1.525
H7 0.187 -0.003 2.364
H8 0.187 -0.003 -2.364
H9 0.694 1.350 1.292
H10 0.694 1.350 -1.292

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.43681.87211.87212.46522.46522.46872.46872.51432.5143
H21.43682.46962.46963.42463.42462.79492.79492.68132.6813
C31.87212.46962.85131.10493.14901.10463.83401.10452.9304
C41.87212.46962.85133.14901.10493.83401.10462.93041.1045
H52.46523.42461.10493.14903.04961.78464.19541.79663.3328
H62.46523.42463.14901.10493.04964.19541.78463.33281.7966
H72.46872.79491.10463.83401.78464.19544.72731.79903.9308
H82.46872.79493.83401.10464.19541.78464.72733.93081.7990
H92.51432.68131.10452.93041.79663.33281.79903.93082.5839
H102.51432.68132.93041.10453.33281.79663.93081.79902.5839

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 109.069 P1 C3 H7 109.333
P1 C3 H9 112.718 P1 C4 H6 109.069
P1 C4 H8 109.333 P1 C4 H10 112.718
H2 P1 C3 95.649 H2 P1 C4 95.649
C3 P1 C4 99.197 H5 C3 H7 107.743
H5 C3 H9 108.811 H6 C4 H8 107.743
H6 C4 H10 108.811 H7 C3 H9 109.042
H8 C4 H10 109.042
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.305      
2 H 0.041      
3 C -0.825      
4 C -0.825      
5 H 0.217      
6 H 0.217      
7 H 0.221      
8 H 0.221      
9 H 0.214      
10 H 0.214      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.468 1.328 0.000 1.408
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.115 -1.393 0.000
y -1.393 -30.064 0.000
z 0.000 0.000 -26.472
Traceless
 xyz
x 0.153 -1.393 0.000
y -1.393 -2.770 0.000
z 0.000 0.000 2.617
Polar
3z2-r25.234
x2-y21.949
xy-1.393
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.604 -0.354 0.000
y -0.354 5.864 0.000
z 0.000 0.000 7.022


<r2> (average value of r2) Å2
<r2> 83.044
(<r2>)1/2 9.113