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

using model chemistry: PBE1PBE/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBE1PBE/6-31G*
 hartrees
Energy at 0K-2353.029435
Energy at 298.15K-2353.036745
HF Energy-2353.029435
Nuclear repulsion energy292.082461
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 PBE1PBE/6-31G*
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 3179 3021 27.25      
2 A1 3076 2923 16.36      
3 A1 1531 1455 6.84      
4 A1 1338 1271 4.36      
5 A1 921 875 40.89      
6 A1 584 555 1.64      
7 A1 259 246 0.38      
8 A2 3182 3023 0.00      
9 A2 1493 1419 0.00      
10 A2 780 741 0.00      
11 A2 172 163 0.00      
12 E 3182 3024 12.05      
12 E 3182 3024 12.05      
13 E 3179 3021 3.26      
13 E 3179 3021 3.26      
14 E 3078 2925 15.26      
14 E 3078 2925 15.26      
15 E 1510 1435 11.43      
15 E 1510 1435 11.43      
16 E 1502 1428 2.76      
16 E 1502 1428 2.76      
17 E 1310 1245 1.73      
17 E 1310 1245 1.73      
18 E 931 885 19.84      
18 E 931 885 19.84      
19 E 798 758 0.73      
19 E 798 758 0.73      
20 E 600 570 14.29      
20 E 600 570 14.29      
21 E 235 223 0.11      
21 E 235 223 0.11      
22 E 212 201 0.00      
22 E 212 201 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24793.0 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 23560.8 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 PBE1PBE/6-31G*
ABC
0.15909 0.15909 0.11581

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
As1 0.000 0.000 0.469
C2 0.000 1.689 -0.515
C3 1.463 -0.845 -0.515
C4 -1.463 -0.845 -0.515
H5 0.000 1.520 -1.597
H6 1.317 -0.760 -1.597
H7 -1.317 -0.760 -1.597
H8 -0.885 2.267 -0.234
H9 2.406 -0.367 -0.234
H10 -1.521 -1.900 -0.234
H11 0.885 2.267 -0.234
H12 1.521 -1.900 -0.234
H13 -2.406 -0.367 -0.234

Atom - Atom Distances (Å)
  As1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
As11.95531.95531.95532.56472.56472.56472.53332.53332.53332.53332.53332.5333
C21.95532.92632.92631.09432.98392.98391.09353.17783.90851.09353.90853.1778
C31.95532.92632.92632.98391.09432.98393.90851.09353.17783.17781.09353.9085
C41.95532.92632.92632.98392.98391.09433.17783.90851.09353.90853.17781.0935
H52.56471.09432.98392.98392.63352.63351.78803.34803.98361.78803.98363.3480
H62.56472.98391.09432.98392.63352.63353.98361.78803.34803.34801.78803.9836
H72.56472.98392.98391.09432.63352.63353.34803.98361.78803.98363.34801.7880
H82.53331.09353.90853.17781.78803.98363.34804.21554.21551.76944.81183.0424
H92.53333.17781.09353.90853.34801.78803.98364.21554.21553.04241.76944.8118
H102.53333.90853.17781.09353.98363.34801.78804.21554.21554.81183.04241.7694
H112.53331.09353.17783.90851.78803.34803.98361.76943.04244.81184.21554.2155
H122.53333.90851.09353.17783.98361.78803.34804.81181.76943.04244.21554.2155
H132.53333.17783.90851.09353.34803.98361.78803.04244.81181.76944.21554.2155

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 111.339 As1 C2 H8 109.091
As1 C2 H11 109.091 As1 C3 H6 111.339
As1 C3 H9 109.091 As1 C3 H12 109.091
As1 C4 H7 111.339 As1 C4 H10 109.091
As1 C4 H13 109.091 C2 As1 C3 96.887
C2 As1 C4 96.887 C3 As1 C4 96.887
H5 C2 H8 109.623 H5 C2 H11 109.623
H6 C3 H9 109.623 H6 C3 H12 109.623
H7 C4 H10 109.623 H7 C4 H13 109.623
H8 C2 H11 108.008 H9 C3 H12 108.008
H10 C4 H13 108.008
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 As 0.312      
2 C -0.664      
3 C -0.664      
4 C -0.664      
5 H 0.182      
6 H 0.182      
7 H 0.182      
8 H 0.189      
9 H 0.189      
10 H 0.189      
11 H 0.189      
12 H 0.189      
13 H 0.189      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.166 1.166
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.836 0.000 0.000
y 0.000 -37.836 0.000
z 0.000 0.000 -41.416
Traceless
 xyz
x 1.790 0.000 0.000
y 0.000 1.790 0.000
z 0.000 0.000 -3.580
Polar
3z2-r2-7.159
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.231 0.000 0.000
y 0.000 9.231 0.001
z 0.000 0.001 7.715


<r2> (average value of r2) Å2
<r2> 138.243
(<r2>)1/2 11.758