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

using model chemistry: PBEPBE/3-21G

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/3-21G
 hartrees
Energy at 0K-2343.720261
Energy at 298.15K-2343.727084
Nuclear repulsion energy286.479584
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/3-21G
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 3074 3046 29.63      
2 A1 2982 2955 15.45      
3 A1 1495 1481 13.14      
4 A1 1331 1318 5.12      
5 A1 919 911 60.58      
6 A1 574 569 2.18      
7 A1 206 204 0.62      
8 A2 3078 3050 0.00      
9 A2 1465 1451 0.00      
10 A2 786 779 0.00      
11 A2 115 114 0.00      
12 E 3078 3050 12.56      
12 E 3078 3050 12.56      
13 E 3073 3045 3.41      
13 E 3073 3045 3.40      
14 E 2984 2957 15.05      
14 E 2984 2957 15.05      
15 E 1483 1470 16.99      
15 E 1483 1470 16.99      
16 E 1477 1463 6.52      
16 E 1477 1463 6.52      
17 E 1301 1289 5.59      
17 E 1301 1289 5.59      
18 E 924 915 22.96      
18 E 924 915 22.96      
19 E 805 798 1.98      
19 E 805 798 1.97      
20 E 579 574 12.17      
20 E 579 574 12.17      
21 E 191 189 0.14      
21 E 191 189 0.14      
22 E 147 146 0.00      
22 E 147 146 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24055.4 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 23836.5 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/3-21G
ABC
0.15280 0.15280 0.11108

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/3-21G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
As1 0.000 0.000 0.479
C2 0.000 1.726 -0.526
C3 1.495 -0.863 -0.526
C4 -1.495 -0.863 -0.526
H5 0.000 1.565 -1.617
H6 1.355 -0.782 -1.617
H7 -1.355 -0.782 -1.617
H8 -0.894 2.309 -0.247
H9 2.447 -0.380 -0.247
H10 -1.552 -1.929 -0.247
H11 0.894 2.309 -0.247
H12 1.552 -1.929 -0.247
H13 -2.447 -0.380 -0.247

Atom - Atom Distances (Å)
  As1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
As11.99711.99711.99712.61572.61572.61572.58002.58002.58002.58002.58002.5800
C21.99712.99012.99011.10383.05323.05321.10323.24033.98101.10323.98103.2403
C31.99712.99012.99013.05321.10383.05323.98101.10323.24033.24031.10323.9810
C41.99712.99012.99013.05323.05321.10383.24033.98101.10323.98103.24031.1032
H52.61571.10383.05323.05322.71022.71021.79803.41274.06141.79804.06143.4127
H62.61573.05321.10383.05322.71022.71024.06141.79803.41273.41271.79804.0614
H72.61573.05323.05321.10382.71022.71023.41274.06141.79804.06143.41271.7980
H82.58001.10323.98103.24031.79804.06143.41274.28854.28851.78894.89333.1044
H92.58003.24031.10323.98103.41271.79804.06144.28854.28853.10441.78894.8933
H102.58003.98103.24031.10324.06143.41271.79804.28854.28854.89333.10441.7889
H112.58001.10323.24033.98101.79803.41274.06141.78893.10444.89334.28854.2885
H122.58003.98101.10323.24034.06141.79803.41274.89331.78893.10444.28854.2885
H132.58003.24033.98101.10323.41274.06141.79803.10444.89331.78894.28854.2885

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 111.766 As1 C2 H8 109.224
As1 C2 H11 109.224 As1 C3 H6 111.766
As1 C3 H9 109.224 As1 C3 H12 109.224
As1 C4 H7 111.766 As1 C4 H10 109.224
As1 C4 H13 109.224 C2 As1 C3 96.941
C2 As1 C4 96.941 C3 As1 C4 96.941
H5 C2 H8 109.109 H5 C2 H11 109.109
H6 C3 H9 109.109 H6 C3 H12 109.109
H7 C4 H10 109.109 H7 C4 H13 109.109
H8 C2 H11 108.343 H9 C3 H12 108.343
H10 C4 H13 108.343
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 As 0.809      
2 C -0.917      
3 C -0.917      
4 C -0.917      
5 H 0.213      
6 H 0.213      
7 H 0.213      
8 H 0.218      
9 H 0.218      
10 H 0.218      
11 H 0.218      
12 H 0.218      
13 H 0.218      


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 -1.013 1.013
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.380 0.000 0.000
y 0.000 -38.380 0.000
z 0.000 0.000 -41.614
Traceless
 xyz
x 1.617 0.000 0.000
y 0.000 1.617 0.000
z 0.000 0.000 -3.234
Polar
3z2-r2-6.468
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 8.956 0.000 0.000
y 0.000 8.956 0.000
z 0.000 0.000 7.168


<r2> (average value of r2) Å2
<r2> 143.156
(<r2>)1/2 11.965