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All results from a given calculation for CH3PHCH3 (dimethylphosphine)

using model chemistry: BLYP/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 BLYP/6-31+G**
 hartrees
Energy at 0K-421.702568
Energy at 298.15K-421.710151
HF Energy-421.702568
Nuclear repulsion energy111.227039
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 BLYP/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' 3046 3030 18.02      
2 A' 3041 3025 32.67      
3 A' 2963 2947 25.91      
4 A' 2266 2254 125.34      
5 A' 1448 1440 2.55      
6 A' 1447 1439 17.15      
7 A' 1303 1296 0.63      
8 A' 988 983 29.39      
9 A' 941 936 31.61      
10 A' 700 696 1.50      
11 A' 611 608 3.03      
12 A' 242 241 0.29      
13 A' 184 183 0.17      
14 A" 3047 3030 7.91      
15 A" 3042 3026 0.68      
16 A" 2964 2948 27.45      
17 A" 1440 1432 10.71      
18 A" 1435 1427 2.48      
19 A" 1285 1279 0.68      
20 A" 997 992 27.17      
21 A" 810 806 0.29      
22 A" 708 704 0.07      
23 A" 658 655 17.14      
24 A" 173 172 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 17868.1 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 17773.4 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 BLYP/6-31+G**
ABC
0.52015 0.22290 0.17244

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.038 -0.675 0.000
H2 1.377 -0.933 0.000
C3 -0.038 0.536 1.452
C4 -0.038 0.536 -1.452
H5 -1.041 0.983 1.545
H6 -1.041 0.983 -1.545
H7 0.168 -0.016 2.382
H8 0.168 -0.016 -2.382
H9 0.702 1.346 1.347
H10 0.702 1.346 -1.347

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.43891.89081.89082.47842.47842.48052.48052.53912.5391
H21.43892.50422.50423.45083.45082.82492.82492.73242.7324
C31.89082.50422.90341.10183.19181.10163.87911.10203.0057
C41.89082.50422.90343.19181.10183.87911.10163.00571.1020
H52.47843.45081.10183.19183.09071.77754.22921.79153.3962
H62.47843.45083.19181.10183.09074.22921.77753.39621.7915
H72.48052.82491.10163.87911.77754.22924.76471.79254.0058
H82.48052.82493.87911.10164.22921.77754.76474.00581.7925
H92.53912.73241.10203.00571.79153.39621.79254.00582.6933
H102.53912.73243.00571.10203.39621.79154.00581.79252.6933

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 108.950 P1 C3 H7 109.111
P1 C3 H9 113.435 P1 C4 H6 108.950
P1 C4 H8 109.111 P1 C4 H10 113.435
H2 P1 C3 96.600 H2 P1 C4 96.600
C3 P1 C4 100.307 H5 C3 H7 107.546
H5 C3 H9 108.767 H6 C4 H8 107.546
H6 C4 H10 108.767 H7 C3 H9 108.867
H8 C4 H10 108.867
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.289      
2 H -0.029      
3 C -0.633      
4 C -0.633      
5 H 0.168      
6 H 0.168      
7 H 0.169      
8 H 0.169      
9 H 0.166      
10 H 0.166      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.467 1.212 0.000 1.299
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.046 -1.440 0.000
y -1.440 -31.138 0.000
z 0.000 0.000 -27.690
Traceless
 xyz
x 0.368 -1.440 0.000
y -1.440 -2.770 0.000
z 0.000 0.000 2.402
Polar
3z2-r24.804
x2-y22.092
xy-1.440
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.853 -0.176 0.000
y -0.176 7.719 0.000
z 0.000 0.000 8.842


<r2> (average value of r2) Å2
<r2> 85.202
(<r2>)1/2 9.230