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All results from a given calculation for As(CH3)3 (trimethyl arsine)

using model chemistry: MP2/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2/cc-pVTZ
 hartrees
Energy at 0K-2353.892222
Energy at 298.15K-2353.899371
HF Energy-2353.130104
Nuclear repulsion energy292.847380
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/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3172 3011 22.51      
2 A1 3066 2911 16.91      
3 A1 1489 1414 8.60      
4 A1 1303 1238 5.31      
5 A1 909 863 25.37      
6 A1 604 574 2.24      
7 A1 235 223 1.20      
8 A2 3181 3020 0.00      
9 A2 1463 1389 0.00      
10 A2 762 724 0.00      
11 A2 145 138 0.00      
12 E 3181 3020 7.67      
12 E 3181 3020 7.67      
13 E 3173 3013 2.48      
13 E 3173 3013 2.48      
14 E 3070 2915 12.98      
14 E 3070 2915 12.98      
15 E 1479 1404 7.93      
15 E 1479 1404 7.93      
16 E 1470 1396 4.14      
16 E 1470 1396 4.14      
17 E 1278 1214 1.08      
17 E 1278 1214 1.08      
18 E 911 865 13.74      
18 E 911 865 13.74      
19 E 803 763 0.28      
19 E 803 763 0.28      
20 E 622 590 16.68      
20 E 622 590 16.68      
21 E 220 209 0.25      
21 E 220 209 0.25      
22 E 173 164 0.03      
22 E 173 164 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 24542.8 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 23303.4 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/cc-pVTZ
ABC
0.15959 0.15959 0.11687

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
As1 0.000 0.000 0.470
C2 0.000 1.681 -0.516
C3 1.456 -0.841 -0.516
C4 -1.456 -0.841 -0.516
H5 0.000 1.508 -1.591
H6 1.306 -0.754 -1.591
H7 -1.306 -0.754 -1.591
H8 -0.882 2.256 -0.242
H9 2.395 -0.364 -0.242
H10 -1.513 -1.892 -0.242
H11 0.882 2.256 -0.242
H12 1.513 -1.892 -0.242
H13 -2.395 -0.364 -0.242

Atom - Atom Distances (Å)
  As1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
As11.94871.94871.94872.55382.55382.55382.52502.52502.52502.52502.52502.5250
C21.94872.91202.91201.08922.96552.96551.08823.16163.89021.08823.89023.1616
C31.94872.91202.91202.96551.08922.96553.89021.08823.16163.16161.08823.8902
C41.94872.91202.91202.96552.96551.08923.16163.89021.08823.89023.16161.0882
H52.55381.08922.96552.96552.61272.61271.77723.32633.95911.77723.95913.3263
H62.55382.96551.08922.96552.61272.61273.95911.77723.32633.32631.77723.9591
H72.55382.96552.96551.08922.61272.61273.32633.95911.77723.95913.32631.7772
H82.52501.08823.89023.16161.77723.95913.32634.19634.19631.76444.79043.0260
H92.52503.16161.08823.89023.32631.77723.95914.19634.19633.02601.76444.7904
H102.52503.89023.16161.08823.95913.32631.77724.19634.19634.79043.02601.7644
H112.52501.08823.16163.89021.77723.32633.95911.76443.02604.79044.19634.1963
H122.52503.89021.08823.16163.95911.77723.32634.79041.76443.02604.19634.1963
H132.52503.16163.89021.08823.32633.95911.77723.02604.79041.76444.19634.1963

picture of trimethyl arsine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
As1 C2 H5 111.245 As1 C2 H8 109.190
As1 C2 H11 109.190 As1 C3 H6 111.245
As1 C3 H9 109.190 As1 C3 H12 109.190
As1 C4 H7 111.245 As1 C4 H10 109.190
As1 C4 H13 109.190 C2 As1 C3 96.690
C2 As1 C4 96.690 C3 As1 C4 96.690
H5 C2 H8 109.416 H5 C2 H11 109.416
H6 C3 H9 109.416 H6 C3 H12 109.416
H7 C4 H10 109.416 H7 C4 H13 109.416
H8 C2 H11 108.331 H9 C3 H12 108.331
H10 C4 H13 108.331
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability