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

using model chemistry: B3LYP/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 B3LYP/6-31G**
 hartrees
Energy at 0K-2353.523223
Energy at 298.15K-2353.530471
Nuclear repulsion energy289.700083
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/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 3148 3025 33.58      
2 A1 3050 2930 16.13      
3 A1 1515 1456 4.04      
4 A1 1323 1272 1.57      
5 A1 912 876 37.18      
6 A1 556 534 1.75      
7 A1 260 250 0.39      
8 A2 3146 3023 0.00      
9 A2 1480 1422 0.00      
10 A2 768 738 0.00      
11 A2 172 165 0.00      
12 E 3148 3024 9.31      
12 E 3148 3024 9.31      
13 E 3147 3024 11.94      
13 E 3147 3024 11.94      
14 E 3051 2932 18.45      
14 E 3051 2932 18.46      
15 E 1497 1438 8.05      
15 E 1497 1438 8.05      
16 E 1488 1430 1.96      
16 E 1488 1430 1.97      
17 E 1295 1244 0.01      
17 E 1295 1244 0.01      
18 E 917 881 17.91      
18 E 917 881 17.91      
19 E 791 760 0.63      
19 E 791 760 0.63      
20 E 571 549 14.03      
20 E 571 549 14.03      
21 E 233 224 0.12      
21 E 233 224 0.12      
22 E 211 202 0.00      
22 E 211 202 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24512.7 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 23551.8 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 B3LYP/6-31G**
ABC
0.15636 0.15636 0.11351

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
As1 0.000 0.000 0.471
C2 0.000 1.708 -0.520
C3 1.479 -0.854 -0.520
C4 -1.479 -0.854 -0.520
H5 0.000 1.545 -1.600
H6 1.338 -0.772 -1.600
H7 -1.338 -0.772 -1.600
H8 -0.884 2.283 -0.234
H9 2.419 -0.376 -0.234
H10 -1.535 -1.907 -0.234
H11 0.884 2.283 -0.234
H12 1.535 -1.907 -0.234
H13 -2.419 -0.376 -0.234

Atom - Atom Distances (Å)
  As1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
As11.97491.97491.97492.58452.58452.58452.54802.54802.54802.54802.54802.5480
C21.97492.95872.95871.09313.01853.01851.09273.20593.93831.09273.93833.2059
C31.97492.95872.95873.01851.09313.01853.93831.09273.20593.20591.09273.9383
C41.97492.95872.95873.01853.01851.09313.20593.93831.09273.93833.20591.0927
H52.58451.09313.01853.01852.67572.67571.78733.37784.01761.78734.01763.3778
H62.58453.01851.09313.01852.67572.67574.01761.78733.37783.37781.78734.0176
H72.58453.01853.01851.09312.67572.67573.37784.01761.78734.01763.37781.7873
H82.54801.09273.93833.20591.78734.01763.37784.24074.24071.76854.83873.0703
H92.54803.20591.09273.93833.37781.78734.01764.24074.24073.07031.76854.8387
H102.54803.93833.20591.09274.01763.37781.78734.24074.24074.83873.07031.7685
H112.54801.09273.20593.93831.78733.37784.01761.76853.07034.83874.24074.2407
H122.54803.93831.09273.20594.01761.78733.37784.83871.76853.07034.24074.2407
H132.54803.20593.93831.09273.37784.01761.78733.07034.83871.76854.24074.2407

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 111.527 As1 C2 H8 108.895
As1 C2 H11 108.895 As1 C3 H6 111.527
As1 C3 H9 108.895 As1 C3 H12 108.895
As1 C4 H7 111.527 As1 C4 H10 108.895
As1 C4 H13 108.895 C2 As1 C3 97.018
C2 As1 C4 97.018 C3 As1 C4 97.018
H5 C2 H8 109.707 H5 C2 H11 109.707
H6 C3 H9 109.707 H6 C3 H12 109.707
H7 C4 H10 109.707 H7 C4 H13 109.707
H8 C2 H11 108.034 H9 C3 H12 108.034
H10 C4 H13 108.034
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 As 0.287      
2 C -0.444      
3 C -0.444      
4 C -0.444      
5 H 0.114      
6 H 0.114      
7 H 0.114      
8 H 0.117      
9 H 0.117      
10 H 0.117      
11 H 0.117      
12 H 0.117      
13 H 0.117      


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 -1.063 1.063
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.103 0.000 0.000
y 0.000 -38.103 0.000
z 0.000 0.000 -41.400
Traceless
 xyz
x 1.648 0.000 0.000
y 0.000 1.648 0.000
z 0.000 0.000 -3.297
Polar
3z2-r2-6.594
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 9.460 0.000 0.000
y 0.000 9.460 0.000
z 0.000 0.000 7.820


<r2> (average value of r2) Å2
<r2> 140.344
(<r2>)1/2 11.847