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All results from a given calculation for CH3PH2 (Methyl phosphine)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-379.689760
Energy at 298.15K-379.695378
HF Energy-379.533189
Nuclear repulsion energy58.630664
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 MP2/3-21G
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 3201 3056 8.16      
2 A 3111 2970 13.02      
3 A 2269 2166 76.51      
4 A 1579 1507 8.54      
5 A 1430 1364 0.21      
6 A 1139 1087 27.33      
7 A 1037 989 49.21      
8 A 760 725 2.81      
9 A 653 623 3.20      
10 A 3198 3052 6.07      
11 A 2269 2165 108.02      
12 A 1579 1508 8.63      
13 A 1082 1033 23.51      
14 A 721 688 3.97      
15 A 229 218 3.60      

Unscaled Zero Point Vibrational Energy (zpe) 12127.3 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 11575.5 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 MP2/3-21G
ABC
2.34703 0.37046 0.36596

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.071 1.231 0.000
P2 0.071 -0.695 0.000
H3 -0.939 1.644 0.000
H4 0.607 1.575 0.887
H5 0.607 1.575 -0.887
H6 -0.884 -0.878 -1.065
H7 -0.884 -0.878 1.065

Atom - Atom Distances (Å)
  C1 P2 H3 H4 H5 H6 H7
C11.92561.09171.09231.09232.54832.5483
P21.92562.54822.49562.49561.44221.4422
H31.09172.54821.78401.78402.73872.7387
H41.09232.49561.78401.77423.47182.8767
H51.09232.49561.78401.77422.87673.4718
H62.54831.44222.73873.47182.87672.1294
H72.54831.44222.73872.87673.47182.1294

picture of Methyl phosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 P2 H6 97.302 C1 P2 H7 97.302
P2 C1 H3 112.273 P2 C1 H4 108.389
P2 C1 H5 108.389 H3 C1 H4 109.547
H3 C1 H5 109.547 H4 C1 H5 108.619
H6 P2 H7 95.163
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.842     -0.044
2 P 0.279     -0.350
3 H 0.209     0.067
4 H 0.209     0.067
5 H 0.207     0.016
6 H -0.031     0.122
7 H -0.031     0.122


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.961 0.000 0.994 1.382
CHELPG        
AIM        
ESP 0.954 0.000 0.929 1.331


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.264 0.000 -1.706
y 0.000 -21.909 0.000
z -1.706 0.000 -23.986
Traceless
 xyz
x -0.317 0.000 -1.706
y 0.000 1.716 0.000
z -1.706 0.000 -1.399
Polar
3z2-r2-2.798
x2-y2-1.356
xy0.000
xz-1.706
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.910 0.513 0.000
y 0.513 5.066 0.000
z 0.000 0.000 4.622


<r2> (average value of r2) Å2
<r2> 47.046
(<r2>)1/2 6.859