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

using model chemistry: B3LYP/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B3LYP/SDD
 hartrees
Energy at 0K-125.935350
Energy at 298.15K-125.942249
Nuclear repulsion energy101.464519
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 B3LYP/SDD
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 3152 3030 58.95      
2 A1 3041 2923 19.60      
3 A1 1506 1448 16.96      
4 A1 1347 1295 9.25      
5 A1 950 913 62.38      
6 A1 549 528 3.42      
7 A1 235 226 0.53      
8 A2 3149 3027 0.00      
9 A2 1482 1425 0.00      
10 A2 792 762 0.00      
11 A2 102 98 0.00      
12 E 3151 3029 29.08      
12 E 3151 3029 29.09      
13 E 3150 3028 8.82      
13 E 3150 3028 8.82      
14 E 3042 2924 35.97      
14 E 3042 2924 35.98      
15 E 1498 1440 17.83      
15 E 1498 1440 17.83      
16 E 1489 1431 6.61      
16 E 1489 1431 6.62      
17 E 1320 1269 12.40      
17 E 1320 1269 12.40      
18 E 938 901 23.84      
18 E 938 901 23.84      
19 E 822 790 2.35      
19 E 822 790 2.35      
20 E 572 550 14.85      
20 E 572 550 14.85      
21 E 209 201 0.12      
21 E 209 201 0.12      
22 E 154 148 0.02      
22 E 154 148 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 24497.5 cm-1
Scaled (by 0.9613) Zero Point Vibrational Energy (zpe) 23549.4 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 B3LYP/SDD
ABC
0.15216 0.15216 0.11044

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/SDD

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
As1 0.000 0.000 0.479
C2 0.000 1.733 -0.526
C3 1.501 -0.867 -0.526
C4 -1.501 -0.867 -0.526
H5 0.000 1.567 -1.611
H6 1.357 -0.784 -1.611
H7 -1.357 -0.784 -1.611
H8 -0.890 2.311 -0.250
H9 2.447 -0.385 -0.250
H10 -1.557 -1.926 -0.250
H11 0.890 2.311 -0.250
H12 1.557 -1.926 -0.250
H13 -2.447 -0.385 -0.250

Atom - Atom Distances (Å)
  As1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
As12.00362.00362.00362.61212.61212.61212.58172.58172.58172.58172.58172.5817
C22.00363.00183.00181.09683.05793.05791.09673.24783.98641.09673.98643.2478
C32.00363.00183.00183.05791.09683.05793.98641.09673.24783.24781.09673.9864
C42.00363.00183.00183.05793.05791.09683.24783.98641.09673.98643.24781.0967
H52.61211.09683.05793.05792.71432.71431.78823.41304.05951.78824.05953.4130
H62.61213.05791.09683.05792.71432.71444.05951.78823.41303.41301.78824.0595
H72.61213.05793.05791.09682.71432.71443.41304.05951.78824.05953.41301.7882
H82.58171.09673.98643.24781.78824.05953.41304.28974.28971.77994.89313.1132
H92.58173.24781.09673.98643.41301.78824.05954.28974.28973.11321.77994.8931
H102.58173.98643.24781.09674.05953.41301.78824.28974.28974.89313.11321.7799
H112.58171.09673.24783.98641.78823.41304.05951.77993.11324.89314.28974.2897
H122.58173.98641.09673.24784.05951.78823.41304.89311.77993.11324.28974.2897
H132.58173.24783.98641.09673.41304.05951.78823.11324.89311.77994.28974.2897

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 111.419 As1 C2 H8 109.231
As1 C2 H11 109.231 As1 C3 H6 111.419
As1 C3 H9 109.231 As1 C3 H12 109.231
As1 C4 H7 111.419 As1 C4 H10 109.231
As1 C4 H13 109.231 C2 As1 C3 97.022
C2 As1 C4 97.022 C3 As1 C4 97.022
H5 C2 H8 109.216 H5 C2 H11 109.216
H6 C3 H9 109.216 H6 C3 H12 109.217
H7 C4 H10 109.217 H7 C4 H13 109.216
H8 C2 H11 108.476 H9 C3 H12 108.476
H10 C4 H13 108.476
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 As 0.649      
2 C -0.872      
3 C -0.872      
4 C -0.872      
5 H 0.218      
6 H 0.218      
7 H 0.218      
8 H 0.219      
9 H 0.219      
10 H 0.219      
11 H 0.219      
12 H 0.219      
13 H 0.219      


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 -0.930 0.930
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.250 0.000 0.000
y 0.000 -34.250 0.000
z 0.000 0.000 -37.236
Traceless
 xyz
x 1.493 0.000 0.000
y 0.000 1.493 0.000
z 0.000 0.000 -2.986
Polar
3z2-r2-5.973
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 9.451 0.000 0.000
y 0.000 9.451 0.000
z 0.000 0.000 7.765


<r2> (average value of r2) Å2
<r2> 134.543
(<r2>)1/2 11.599