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

using model chemistry: HF/CEP-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 HF/CEP-31G
 hartrees
Energy at 0K-27.673596
Energy at 298.15K-27.680902
Nuclear repulsion energy68.982582
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 HF/CEP-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 3304 2978 98.20      
2 A1 3198 2882 46.25      
3 A1 1613 1454 20.49      
4 A1 1468 1323 3.45      
5 A1 1031 930 65.46      
6 A1 583 525 2.55      
7 A1 244 220 1.83      
8 A2 3306 2980 0.00      
9 A2 1592 1435 0.00      
10 A2 860 775 0.00      
11 A2 150 135 0.00      
12 E 3307 2981 57.28      
12 E 3307 2981 57.28      
13 E 3301 2975 11.27      
13 E 3301 2975 11.27      
14 E 3195 2880 75.22      
14 E 3195 2880 75.22      
15 E 1605 1446 14.87      
15 E 1605 1446 14.87      
16 E 1599 1441 5.89      
16 E 1599 1441 5.89      
17 E 1442 1300 4.84      
17 E 1442 1300 4.84      
18 E 1020 919 23.30      
18 E 1020 919 23.30      
19 E 900 811 0.08      
19 E 900 811 0.08      
20 E 611 551 16.09      
20 E 611 551 16.09      
21 E 223 201 0.47      
21 E 223 201 0.47      
22 E 171 154 0.02      
22 E 171 154 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 26046.0 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 23477.8 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 HF/CEP-31G
ABC
0.15510 0.15510 0.11050

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
As1 0.000 0.000 0.462
C2 0.000 1.733 -0.509
C3 1.501 -0.867 -0.509
C4 -1.501 -0.867 -0.509
H5 0.000 1.588 -1.589
H6 1.375 -0.794 -1.589
H7 -1.375 -0.794 -1.589
H8 -0.883 2.303 -0.224
H9 2.436 -0.386 -0.224
H10 -1.553 -1.917 -0.224
H11 0.883 2.303 -0.224
H12 1.553 -1.917 -0.224
H13 -2.436 -0.386 -0.224

Atom - Atom Distances (Å)
  As1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
As11.98671.98671.98672.59432.59432.59432.56042.56042.56042.56042.56042.5604
C21.98673.00203.00201.09013.07333.07331.08933.24193.97671.08933.97673.2419
C31.98673.00203.00203.07331.09013.07333.97671.08933.24193.24191.08933.9767
C41.98673.00203.00203.07333.07331.09013.24193.97671.08933.97673.24191.0893
H52.59431.09013.07333.07332.75062.75061.77663.42034.06931.77664.06933.4203
H62.59433.07331.09013.07332.75062.75064.06931.77663.42033.42031.77664.0693
H72.59433.07333.07331.09012.75062.75063.42034.06931.77664.06933.42031.7766
H82.56041.08933.97673.24191.77664.06933.42034.27264.27261.76704.87263.1056
H92.56043.24191.08933.97673.42031.77664.06934.27264.27253.10561.76704.8726
H102.56043.97673.24191.08934.06933.42031.77664.27264.27254.87263.10561.7670
H112.56041.08933.24193.97671.77663.42034.06931.76703.10564.87264.27264.2726
H122.56043.97671.08933.24194.06931.77663.42034.87261.76703.10564.27264.2725
H132.56043.24193.97671.08933.42034.06931.77663.10564.87261.76704.27264.2725

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 111.611 As1 C2 H8 109.180
As1 C2 H11 109.180 As1 C3 H6 111.611
As1 C3 H9 109.180 As1 C3 H12 109.180
As1 C4 H7 111.611 As1 C4 H10 109.180
As1 C4 H13 109.180 C2 As1 C3 98.141
C2 As1 C4 98.141 C3 As1 C4 98.141
H5 C2 H8 109.209 H5 C2 H11 109.209
H6 C3 H9 109.209 H6 C3 H12 109.209
H7 C4 H10 109.209 H7 C4 H13 109.209
H8 C2 H11 108.394 H9 C3 H12 108.394
H10 C4 H13 108.394
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 As 0.437      
2 C -0.572      
3 C -0.572      
4 C -0.572      
5 H 0.132      
6 H 0.132      
7 H 0.132      
8 H 0.147      
9 H 0.147      
10 H 0.147      
11 H 0.147      
12 H 0.147      
13 H 0.147      


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 -1.282 1.282
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.132 0.000 0.000
y 0.000 -35.132 0.000
z 0.000 0.000 -38.703
Traceless
 xyz
x 1.785 0.000 0.000
y 0.000 1.785 0.000
z 0.000 0.000 -3.570
Polar
3z2-r2-7.141
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 9.415 0.000 0.000
y 0.000 9.415 0.000
z 0.000 0.000 7.529


<r2> (average value of r2) Å2
<r2> 114.856
(<r2>)1/2 10.717