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: MP2/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 MP2/aug-cc-pVDZ
 hartrees
Energy at 0K-420.994159
Energy at 298.15K-421.001909
HF Energy-420.553104
Nuclear repulsion energy112.336073
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/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' 3168 3038 10.52      
2 A' 3160 3030 19.69      
3 A' 3058 2933 16.61      
4 A' 2423 2324 82.53      
5 A' 1465 1405 10.55      
6 A' 1461 1401 1.59      
7 A' 1311 1257 1.07      
8 A' 1007 966 23.66      
9 A' 962 923 22.75      
10 A' 722 692 1.88      
11 A' 668 640 2.88      
12 A' 256 245 0.41      
13 A' 197 189 0.06      
14 A" 3169 3039 6.17      
15 A" 3162 3032 0.19      
16 A" 3061 2935 15.91      
17 A" 1453 1394 5.08      
18 A" 1448 1389 2.91      
19 A" 1293 1240 0.27      
20 A" 1024 982 22.03      
21 A" 831 797 0.33      
22 A" 728 698 7.03      
23 A" 706 677 7.65      
24 A" 180 172 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 18456.2 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 17699.5 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/aug-cc-pVDZ
ABC
0.51721 0.23217 0.17749

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 -0.038 -0.679 0.000
H2 1.366 -0.945 0.000
C3 -0.038 0.538 1.420
C4 -0.038 0.538 -1.420
H5 -1.033 1.007 1.480
H6 -1.033 1.007 -1.480
H7 0.140 0.006 2.367
H8 0.140 0.006 -2.367
H9 0.721 1.327 1.300
H10 0.721 1.327 -1.300

Atom - Atom Distances (Å)
  P1 H2 C3 C4 H5 H6 H7 H8 H9 H10
P11.42891.87001.87002.45412.45412.47062.47062.50802.5080
H21.42892.48722.48723.42863.42862.83022.83022.69592.6959
C31.87002.48722.83971.10183.10121.10103.82831.10122.9320
C41.87002.48722.83973.10121.10183.82831.10102.93201.1012
H52.45413.42861.10183.10122.95941.77954.14451.79193.3024
H62.45413.42863.10121.10182.95944.14451.77953.30241.7919
H72.47062.83021.10103.82831.77954.14454.73421.79483.9410
H82.47062.83023.82831.10104.14451.77954.73423.94101.7948
H92.50802.69591.10122.93201.79193.30241.79483.94102.6003
H102.50802.69592.93201.10123.30241.79193.94101.79482.6003

picture of dimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C3 H5 108.565 P1 C3 H7 109.796
P1 C3 H9 112.563 P1 C4 H6 108.565
P1 C4 H8 109.796 P1 C4 H10 112.563
H2 P1 C3 96.957 H2 P1 C4 96.957
C3 P1 C4 98.800 H5 C3 H7 107.768
H5 C3 H9 108.857 H6 C4 H8 107.768
H6 C4 H10 108.857 H7 C3 H9 109.170
H8 C4 H10 109.170
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability