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All results from a given calculation for CH3PHCH3 (dimethylphosphine)

using model chemistry: QCISD(T)=FULL/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD(T)=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-421.078269
Energy at 298.15K-421.085957
HF Energy-420.552626
Nuclear repulsion energy111.934646
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 QCISD(T)=FULL/aug-cc-pVDZ
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' 3119 3026        
2 A' 3110 3017        
3 A' 3019 2929        
4 A' 2368 2297        
5 A' 1458 1415        
6 A' 1454 1410        
7 A' 1309 1270        
8 A' 998 968        
9 A' 952 924        
10 A' 713 692        
11 A' 652 633        
12 A' 253 245        
13 A' 190 184        
14 A" 3119 3026        
15 A" 3111 3018        
16 A" 3021 2931        
17 A" 1447 1403        
18 A" 1443 1400        
19 A" 1292 1254        
20 A" 1013 983        
21 A" 820 796        
22 A" 714 693        
23 A" 694 673        
24 A" 171 165        

Unscaled Zero Point Vibrational Energy (zpe) 18219.1 cm-1
Scaled (by 0.9701) Zero Point Vibrational Energy (zpe) 17674.3 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 QCISD(T)=FULL/aug-cc-pVDZ
ABC
0.51263 0.23066 0.17621

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.038 -0.683 0.000
H2 1.372 -0.945 0.000
C3 -0.038 0.541 1.425
C4 -0.038 0.541 -1.425
H5 -1.036 1.010 1.484
H6 -1.036 1.010 -1.484
H7 0.142 0.008 2.374
H8 0.142 0.008 -2.374
H9 0.723 1.331 1.302
H10 0.723 1.331 -1.302

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.43471.87781.87782.46252.46252.47932.47932.51592.5159
H21.43472.49512.49513.43883.43882.83862.83862.70142.7014
C31.87782.49512.84941.10473.11061.10383.84051.10412.9393
C41.87782.49512.84943.11061.10473.84051.10382.93931.1041
H52.46253.43881.10473.11062.96741.78544.15681.79723.3102
H62.46253.43883.11061.10472.96744.15681.78543.31021.7972
H72.47932.83861.10383.84051.78544.15684.74871.79943.9502
H82.47932.83863.84051.10384.15681.78544.74873.95021.7994
H92.51592.70141.10412.93931.79723.31021.79943.95022.6042
H102.51592.70142.93931.10413.31021.79723.95021.79942.6042

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 108.514 P1 C3 H7 109.775
P1 C3 H9 112.469 P1 C4 H6 108.514
P1 C4 H8 109.775 P1 C4 H10 112.469
H2 P1 C3 96.836 H2 P1 C4 96.836
C3 P1 C4 98.703 H5 C3 H7 107.889
H5 C3 H9 108.910 H6 C4 H8 107.889
H6 C4 H10 108.910 H7 C3 H9 109.172
H8 C4 H10 109.172
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability