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 As(CH3)3 (trimethyl arsine)

using model chemistry: PBEPBE/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 PBEPBE/6-31G**
 hartrees
Energy at 0K-2352.963960
Energy at 298.15K-2352.971064
Nuclear repulsion energy289.355291
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 PBEPBE/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 3094 3052 27.94      
2 A1 2988 2947 15.61      
3 A1 1466 1446 4.76      
4 A1 1269 1252 2.35      
5 A1 880 868 36.30      
6 A1 550 542 1.61      
7 A1 252 248 0.26      
8 A2 3095 3053 0.00      
9 A2 1427 1407 0.00      
10 A2 741 731 0.00      
11 A2 165 163 0.00      
12 E 3096 3053 12.26      
12 E 3096 3053 12.26      
13 E 3094 3052 3.67      
13 E 3094 3052 3.67      
14 E 2991 2950 15.18      
14 E 2991 2950 15.18      
15 E 1444 1425 9.34      
15 E 1444 1425 9.34      
16 E 1437 1417 1.94      
16 E 1437 1417 1.94      
17 E 1240 1223 0.25      
17 E 1240 1223 0.25      
18 E 887 874 17.93      
18 E 887 874 17.93      
19 E 762 751 0.96      
19 E 762 751 0.96      
20 E 564 557 14.18      
20 E 564 557 14.18      
21 E 226 223 0.08      
21 E 226 223 0.08      
22 E 207 204 0.00      
22 E 207 204 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23909.5 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 23581.9 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 PBEPBE/6-31G**
ABC
0.15592 0.15592 0.11382

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
As1 0.000 0.000 0.475
C2 0.000 1.705 -0.524
C3 1.477 -0.852 -0.524
C4 -1.477 -0.852 -0.524
H5 0.000 1.535 -1.611
H6 1.329 -0.768 -1.611
H7 -1.329 -0.768 -1.611
H8 -0.890 2.284 -0.237
H9 2.423 -0.371 -0.237
H10 -1.533 -1.913 -0.237
H11 0.890 2.284 -0.237
H12 1.533 -1.913 -0.237
H13 -2.423 -0.371 -0.237

Atom - Atom Distances (Å)
  As1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
As11.97591.97591.97592.59032.59032.59032.55292.55292.55292.55292.55292.5529
C21.97592.95302.95301.10083.01053.01051.10023.20383.93991.10023.93993.2038
C31.97592.95302.95303.01051.10083.01053.93991.10023.20383.20381.10023.9399
C41.97592.95302.95303.01053.01051.10083.20383.93991.10023.93993.20381.1002
H52.59031.10083.01053.01052.65882.65881.80073.37554.01611.80074.01613.3755
H62.59033.01051.10083.01052.65882.65884.01611.80073.37553.37551.80074.0161
H72.59033.01053.01051.10082.65882.65883.37554.01611.80074.01613.37551.8007
H82.55291.10023.93993.20381.80074.01613.37554.24634.24631.78084.84673.0659
H92.55293.20381.10023.93993.37551.80074.01614.24634.24633.06591.78084.8467
H102.55293.93993.20381.10024.01613.37551.80074.24634.24634.84673.06591.7808
H112.55291.10023.20383.93991.80073.37554.01611.78083.06594.84674.24634.2463
H122.55293.93991.10023.20384.01611.80073.37554.84671.78083.06594.24634.2463
H132.55293.20383.93991.10023.37554.01611.80073.06594.84671.78084.24634.2463

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 111.485 As1 C2 H8 108.819
As1 C2 H11 108.819 As1 C3 H6 111.485
As1 C3 H9 108.819 As1 C3 H12 108.819
As1 C4 H7 111.485 As1 C4 H10 108.819
As1 C4 H13 108.819 C2 As1 C3 96.706
C2 As1 C4 96.706 C3 As1 C4 96.706
H5 C2 H8 109.795 H5 C2 H11 109.795
H6 C3 H9 109.795 H6 C3 H12 109.795
H7 C4 H10 109.795 H7 C4 H13 109.795
H8 C2 H11 108.052 H9 C3 H12 108.052
H10 C4 H13 108.052
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 As 0.262      
2 C -0.486      
3 C -0.486      
4 C -0.486      
5 H 0.130      
6 H 0.130      
7 H 0.130      
8 H 0.135      
9 H 0.135      
10 H 0.135      
11 H 0.135      
12 H 0.135      
13 H 0.135      


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 -1.106 1.106
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.888 0.000 0.000
y 0.000 -37.888 0.000
z 0.000 0.000 -41.254
Traceless
 xyz
x 1.683 0.000 0.000
y 0.000 1.683 0.000
z 0.000 0.000 -3.367
Polar
3z2-r2-6.733
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 9.615 0.000 0.000
y 0.000 9.615 0.001
z 0.000 0.001 8.011


<r2> (average value of r2) Å2
<r2> 140.327
(<r2>)1/2 11.846