return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3PHCH3 (dimethylphosphine)

using model chemistry: QCISD/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 QCISD/6-31+G**
 hartrees
Energy at 0K-421.005786
Energy at 298.15K-421.013566
HF Energy-420.539413
Nuclear repulsion energy112.933546
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/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' 3191 3017 17.20      
2 A' 3186 3012 32.39      
3 A' 3096 2927 21.56      
4 A' 2444 2311 116.50      
5 A' 1516 1434 5.01      
6 A' 1508 1426 11.19      
7 A' 1399 1323 1.20      
8 A' 1046 989 31.07      
9 A' 999 945 29.96      
10 A' 737 697 4.61      
11 A' 683 646 3.79      
12 A' 263 248 0.71      
13 A' 189 178 0.04      
14 A" 3191 3017 9.94      
15 A" 3187 3013 0.18      
16 A" 3097 2928 23.94      
17 A" 1508 1426 7.62      
18 A" 1499 1417 2.24      
19 A" 1382 1307 1.45      
20 A" 1051 993 30.81      
21 A" 865 818 0.12      
22 A" 739 699 7.41      
23 A" 726 687 8.81      
24 A" 170 161 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 18836.2 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 17807.8 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 QCISD/6-31+G**
ABC
0.52976 0.23213 0.17848

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.038 -0.670 0.000
H2 1.349 -0.945 0.000
C3 -0.038 0.531 1.421
C4 -0.038 0.531 -1.421
H5 -1.023 0.993 1.499
H6 -1.023 0.993 -1.499
H7 0.152 -0.002 2.354
H8 0.152 -0.002 -2.354
H9 0.709 1.319 1.310
H10 0.709 1.319 -1.310

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.41371.86041.86042.44632.44632.45432.45432.49562.4956
H21.41372.47422.47423.41073.41072.80432.80432.69312.6931
C31.86042.47422.84221.09123.11681.09083.81721.09122.9388
C41.86042.47422.84223.11681.09123.81721.09082.93881.0912
H52.44633.41071.09123.11682.99891.76094.14971.77263.3164
H62.44633.41073.11681.09122.99894.14971.76093.31641.7726
H72.45432.80431.09083.81721.76094.14974.70791.77303.9341
H82.45432.80433.81721.09084.14971.76094.70793.93411.7730
H92.49562.69311.09122.93881.77263.31641.77303.93412.6197
H102.49562.69312.93881.09123.31641.77263.93411.77302.6197

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 109.155 P1 C3 H7 109.766
P1 C3 H9 112.843 P1 C4 H6 109.155
P1 C4 H8 109.766 P1 C4 H10 112.843
H2 P1 C3 97.229 H2 P1 C4 97.229
C3 P1 C4 99.609 H5 C3 H7 107.609
H5 C3 H9 108.629 H6 C4 H8 107.609
H6 C4 H10 108.629 H7 C3 H9 108.697
H8 C4 H10 108.697
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability