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

using model chemistry: B1B95/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-2353.695145
Energy at 298.15K-2353.702437
Nuclear repulsion energy292.699809
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 B1B95/6-31G*
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 3183 3022 29.27      
2 A1 3081 2925 18.20      
3 A1 1533 1456 6.50      
4 A1 1336 1268 4.35      
5 A1 914 867 37.49      
6 A1 585 555 1.70      
7 A1 251 238 0.46      
8 A2 3187 3026 0.00      
9 A2 1496 1420 0.00      
10 A2 777 737 0.00      
11 A2 174 165 0.00      
12 E 3188 3026 13.45      
12 E 3188 3026 13.45      
13 E 3184 3023 3.81      
13 E 3184 3023 3.80      
14 E 3084 2927 15.92      
14 E 3084 2927 15.91      
15 E 1512 1436 10.74      
15 E 1512 1436 10.75      
16 E 1505 1429 2.27      
16 E 1505 1429 2.27      
17 E 1309 1242 1.06      
17 E 1309 1242 1.06      
18 E 928 881 19.19      
18 E 928 881 19.19      
19 E 793 753 0.65      
19 E 793 753 0.65      
20 E 601 571 14.65      
20 E 601 571 14.65      
21 E 230 219 0.12      
21 E 230 219 0.12      
22 E 214 203 0.00      
22 E 214 203 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24806.3 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 23548.6 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 B1B95/6-31G*
ABC
0.15960 0.15960 0.11660

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
As1 0.000 0.000 0.470
C2 0.000 1.684 -0.517
C3 1.458 -0.842 -0.517
C4 -1.458 -0.842 -0.517
H5 0.000 1.510 -1.595
H6 1.308 -0.755 -1.595
H7 -1.308 -0.755 -1.595
H8 -0.883 2.261 -0.239
H9 2.400 -0.366 -0.239
H10 -1.517 -1.895 -0.239
H11 0.883 2.261 -0.239
H12 1.517 -1.895 -0.239
H13 -2.400 -0.366 -0.239

Atom - Atom Distances (Å)
  As1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
As11.95181.95181.95182.55872.55872.55872.52892.52892.52892.52892.52892.5289
C21.95182.91622.91621.09182.97012.97011.09103.16823.89691.09103.89693.1682
C31.95182.91622.91622.97011.09182.97013.89691.09103.16823.16821.09103.8969
C41.95182.91622.91622.97012.97011.09183.16823.89691.09103.89693.16821.0910
H52.55871.09182.97012.97012.61632.61631.78403.33463.96721.78403.96723.3346
H62.55872.97011.09182.97012.61632.61633.96721.78403.33463.33461.78403.9672
H72.55872.97012.97011.09182.61632.61633.33463.96721.78403.96723.33461.7840
H82.52891.09103.89693.16821.78403.96723.33464.20444.20441.76564.79933.0338
H92.52893.16821.09103.89693.33461.78403.96724.20444.20443.03381.76564.7993
H102.52893.89693.16821.09103.96723.33461.78404.20444.20444.79933.03381.7656
H112.52891.09103.16823.89691.78403.33463.96721.76563.03384.79934.20444.2044
H122.52893.89691.09103.16823.96721.78403.33464.79931.76563.03384.20444.2044
H132.52893.16823.89691.09103.33463.96721.78403.03384.79931.76564.20444.2044

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 111.262 As1 C2 H8 109.123
As1 C2 H11 109.123 As1 C3 H6 111.262
As1 C3 H9 109.123 As1 C3 H12 109.123
As1 C4 H7 111.262 As1 C4 H10 109.123
As1 C4 H13 109.123 C2 As1 C3 96.671
C2 As1 C4 96.671 C3 As1 C4 96.671
H5 C2 H8 109.624 H5 C2 H11 109.624
H6 C3 H9 109.624 H6 C3 H12 109.624
H7 C4 H10 109.624 H7 C4 H13 109.624
H8 C2 H11 108.021 H9 C3 H12 108.021
H10 C4 H13 108.021
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 As 0.287      
2 C -0.628      
3 C -0.628      
4 C -0.628      
5 H 0.173      
6 H 0.173      
7 H 0.173      
8 H 0.180      
9 H 0.180      
10 H 0.180      
11 H 0.180      
12 H 0.180      
13 H 0.180      


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 -1.105 1.105
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.808 0.000 0.000
y 0.000 -37.808 0.000
z 0.000 0.000 -41.272
Traceless
 xyz
x 1.732 0.000 0.000
y 0.000 1.732 0.000
z 0.000 0.000 -3.464
Polar
3z2-r2-6.927
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 9.214 0.000 0.000
y 0.000 9.215 0.001
z 0.000 0.001 7.699


<r2> (average value of r2) Å2
<r2> 137.644
(<r2>)1/2 11.732