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All results from a given calculation for CH3PHCH3 (dimethylphosphine)

using model chemistry: B2PLYP=FULL/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 B2PLYP=FULL/3-21G
 hartrees
Energy at 0K-419.297921
Energy at 298.15K-419.305653
HF Energy-419.211709
Nuclear repulsion energy110.588193
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 B2PLYP=FULL/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' 3176 3024 10.85      
2 A' 3174 3021 19.59      
3 A' 3087 2939 15.50      
4 A' 2228 2121 112.06      
5 A' 1569 1493 8.17      
6 A' 1564 1489 14.84      
7 A' 1410 1342 1.07      
8 A' 1057 1006 31.36      
9 A' 1015 966 40.85      
10 A' 739 703 3.58      
11 A' 623 593 0.71      
12 A' 249 237 0.20      
13 A' 181 172 0.10      
14 A" 3176 3024 3.55      
15 A" 3174 3021 2.31      
16 A" 3089 2941 15.53      
17 A" 1557 1483 14.90      
18 A" 1554 1480 0.04      
19 A" 1391 1324 1.13      
20 A" 1058 1007 25.73      
21 A" 891 848 1.11      
22 A" 761 725 0.31      
23 A" 670 637 7.00      
24 A" 174 166 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 18782.1 cm-1
Scaled (by 0.952) Zero Point Vibrational Energy (zpe) 17880.5 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 B2PLYP=FULL/3-21G
ABC
0.49803 0.22317 0.17012

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.040 -0.697 0.000
H2 1.386 -0.935 0.000
C3 -0.040 0.555 1.455
C4 -0.040 0.555 -1.455
H5 -1.037 0.992 1.534
H6 -1.037 0.992 -1.534
H7 0.183 0.020 2.380
H8 0.183 0.020 -2.380
H9 0.695 1.348 1.304
H10 0.695 1.348 -1.304

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.44571.91921.91922.48992.48992.49562.49562.53412.5341
H21.44572.52412.52413.45533.45532.83292.83292.71892.7189
C31.91922.52412.90991.09153.18121.09163.87851.09182.9631
C41.91922.52412.90993.18121.09153.87851.09162.96311.0918
H52.48993.45531.09153.18123.06841.77414.21351.78303.3437
H62.48993.45533.18121.09153.06844.21351.77413.34371.7830
H72.49562.83291.09163.87851.77414.21354.76011.78463.9493
H82.49562.83293.87851.09164.21351.77414.76013.94931.7846
H92.53412.71891.09182.96311.78303.34371.78463.94932.6076
H102.53412.71892.96311.09183.34371.78303.94931.78462.6076

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 108.436 P1 C3 H7 108.840
P1 C3 H9 111.649 P1 C4 H6 108.436
P1 C4 H8 108.840 P1 C4 H10 111.649
H2 P1 C3 96.183 H2 P1 C4 96.183
C3 P1 C4 98.590 H5 C3 H7 108.718
H5 C3 H9 109.500 H6 C4 H8 108.718
H6 C4 H10 109.500 H7 C3 H9 109.642
H8 C4 H10 109.642
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability