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All results from a given calculation for CH3PHCH3 (dimethylphosphine)

using model chemistry: HF/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/6-31+G**
 hartrees
Energy at 0K-420.539721
Energy at 298.15K-420.547694
HF Energy-420.539721
Nuclear repulsion energy113.198508
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 HF/6-31+G**
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' 3263 2951 23.87      
2 A' 3260 2947 39.22      
3 A' 3181 2876 24.45      
4 A' 2539 2296 141.37      
5 A' 1599 1446 12.45      
6 A' 1597 1444 6.37      
7 A' 1472 1331 1.75      
8 A' 1105 999 39.20      
9 A' 1058 957 31.05      
10 A' 773 699 5.88      
11 A' 712 644 2.97      
12 A' 277 250 0.64      
13 A' 205 185 0.06      
14 A" 3263 2951 12.37      
15 A" 3259 2947 0.14      
16 A" 3181 2877 30.89      
17 A" 1591 1438 7.00      
18 A" 1585 1433 3.47      
19 A" 1456 1317 2.64      
20 A" 1128 1020 35.09      
21 A" 912 824 0.08      
22 A" 789 713 0.11      
23 A" 764 691 15.97      
24 A" 192 174 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 19580.1 cm-1
Scaled (by 0.9042) Zero Point Vibrational Energy (zpe) 17704.3 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 HF/6-31+G**
ABC
0.54379 0.22978 0.17833

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.037 -0.657 0.000
H2 1.334 -0.969 0.000
C3 -0.037 0.524 1.431
C4 -0.037 0.524 -1.431
H5 -1.014 0.990 1.510
H6 -1.014 0.990 -1.510
H7 0.141 -0.022 2.351
H8 0.141 -0.022 -2.351
H9 0.712 1.302 1.336
H10 0.712 1.302 -1.336

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.40701.85481.85482.43862.43862.44192.44192.48692.4869
H21.40702.48122.48123.41083.41082.80182.80182.70722.7072
C31.85482.48122.86101.08533.13301.08493.82501.08502.9700
C41.85482.48122.86103.13301.08533.82501.08492.97001.0850
H52.43863.41081.08533.13303.01921.75124.15501.76293.3428
H62.43863.41083.13301.08533.01924.15501.75123.34281.7629
H72.44192.80181.08493.82501.75124.15504.70241.76383.9590
H82.44192.80183.82501.08494.15501.75124.70243.95901.7638
H92.48692.70721.08502.97001.76293.34281.76383.95902.6716
H102.48692.70722.97001.08503.34281.76293.95901.76382.6716

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 109.268 P1 C3 H7 109.534
P1 C3 H9 112.914 P1 C4 H6 109.268
P1 C4 H8 109.534 P1 C4 H10 112.914
H2 P1 C3 98.114 H2 P1 C4 98.114
C3 P1 C4 100.933 H5 C3 H7 107.593
H5 C3 H9 108.641 H6 C4 H8 107.593
H6 C4 H10 108.641 H7 C3 H9 108.748
H8 C4 H10 108.748
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.367      
2 H -0.093      
3 C -0.582      
4 C -0.582      
5 H 0.149      
6 H 0.149      
7 H 0.151      
8 H 0.151      
9 H 0.145      
10 H 0.145      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.561 1.309 0.000 1.424
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.981 -1.727 0.000
y -1.727 -31.079 0.000
z 0.000 0.000 -27.394
Traceless
 xyz
x 0.256 -1.727 0.000
y -1.727 -2.892 0.000
z 0.000 0.000 2.636
Polar
3z2-r25.272
x2-y22.098
xy-1.727
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.259 -0.252 0.000
y -0.252 6.771 0.000
z 0.000 0.000 7.687


<r2> (average value of r2) Å2
<r2> 82.934
(<r2>)1/2 9.107