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All results from a given calculation for CH3PHCH3 (dimethylphosphine)

using model chemistry: CCSD/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD/TZVP
 hartrees
Energy at 0K-421.063412
Energy at 298.15K-421.071124
HF Energy-420.576602
Nuclear repulsion energy112.679624
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 CCSD/TZVP
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' 3161 3017 18.08      
2 A' 3157 3013 31.13      
3 A' 3070 2930 19.34      
4 A' 2415 2305 103.04      
5 A' 1496 1428 4.16      
6 A' 1488 1420 9.21      
7 A' 1375 1313 0.69      
8 A' 1036 988 26.96      
9 A' 983 938 25.48      
10 A' 736 703 3.00      
11 A' 675 644 2.78      
12 A' 261 250 0.52      
13 A' 185 177 0.05      
14 A" 3161 3017 9.81      
15 A" 3157 3013 0.16      
16 A" 3071 2931 21.70      
17 A" 1486 1419 5.47      
18 A" 1475 1407 3.33      
19 A" 1357 1295 0.58      
20 A" 1046 998 27.59      
21 A" 849 810 0.08      
22 A" 735 701 2.96      
23 A" 717 684 12.10      
24 A" 138 131 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 18614.6 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 17765.8 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 CCSD/TZVP
ABC
0.52526 0.23143 0.17769

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.038 -0.674 0.000
H2 1.358 -0.934 0.000
C3 -0.038 0.534 1.424
C4 -0.038 0.534 -1.424
H5 -1.028 0.985 1.508
H6 -1.028 0.985 -1.508
H7 0.165 0.002 2.354
H8 0.165 0.002 -2.354
H9 0.701 1.327 1.301
H10 0.701 1.327 -1.301

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.42051.86721.86722.45072.45072.45712.45712.49832.4983
H21.42052.47672.47673.41373.41372.80002.80002.69032.6903
C31.86722.47672.84751.09113.12681.09073.82021.09072.9325
C41.86722.47672.84753.12681.09113.82021.09072.93251.0907
H52.45073.41371.09113.12683.01551.76254.15951.77483.3162
H62.45073.41373.12681.09113.01554.15951.76253.31621.7748
H72.45712.80001.09073.82021.76254.15954.70731.77503.9243
H82.45712.80003.82021.09074.15951.76254.70733.92431.7750
H92.49832.69031.09072.93251.77483.31621.77503.92432.6023
H102.49832.69032.93251.09073.31621.77483.92431.77502.6023

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 109.031 P1 C3 H7 109.524
P1 C3 H9 112.603 P1 C4 H6 109.031
P1 C4 H8 109.524 P1 C4 H10 112.603
H2 P1 C3 96.818 H2 P1 C4 96.818
C3 P1 C4 99.370 H5 C3 H7 107.769
H5 C3 H9 108.871 H6 C4 H8 107.769
H6 C4 H10 108.871 H7 C3 H9 108.924
H8 C4 H10 108.924
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability