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

using model chemistry: PBEPBE/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 PBEPBE/6-31G
 hartrees
Energy at 0K-2352.738933
Energy at 298.15K-2352.746170
Nuclear repulsion energy287.281134
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/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 3108 3065 32.23      
2 A1 2993 2951 19.61      
3 A1 1507 1486 13.11      
4 A1 1319 1301 6.35      
5 A1 912 900 49.53      
6 A1 547 540 1.71      
7 A1 282 278 0.47      
8 A2 3108 3065 0.00      
9 A2 1452 1432 0.00      
10 A2 770 759 0.00      
11 A2 157 155 0.00      
12 E 3109 3066 16.50      
12 E 3109 3066 16.49      
13 E 3105 3062 6.07      
13 E 3105 3062 6.07      
14 E 2994 2953 19.90      
14 E 2994 2953 19.90      
15 E 1475 1455 17.40      
15 E 1475 1455 17.40      
16 E 1473 1452 4.41      
16 E 1473 1452 4.41      
17 E 1284 1266 5.58      
17 E 1284 1266 5.58      
18 E 918 905 19.31      
18 E 918 905 19.31      
19 E 788 777 1.09      
19 E 788 777 1.09      
20 E 557 549 10.88      
20 E 557 549 10.89      
21 E 243 240 0.12      
21 E 243 240 0.12      
22 E 205 202 0.02      
22 E 205 202 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 24227.8 cm-1
Scaled (by 0.9862) Zero Point Vibrational Energy (zpe) 23893.4 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 PBEPBE/6-31G
ABC
0.15232 0.15232 0.11435

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
As1 0.000 0.000 0.498
C2 0.000 1.702 -0.549
C3 1.474 -0.851 -0.549
C4 -1.474 -0.851 -0.549
H5 0.000 1.493 -1.631
H6 1.293 -0.747 -1.631
H7 -1.293 -0.747 -1.631
H8 -0.894 2.286 -0.280
H9 2.427 -0.369 -0.280
H10 -1.533 -1.917 -0.280
H11 0.894 2.286 -0.280
H12 1.533 -1.917 -0.280
H13 -2.427 -0.369 -0.280

Atom - Atom Distances (Å)
  As1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
As11.99811.99811.99812.60062.60062.60062.57512.57512.57512.57512.57512.5751
C21.99812.94742.94741.10202.97262.97261.10143.20163.93931.10143.93933.2016
C31.99812.94742.94742.97261.10202.97263.93931.10143.20163.20161.10143.9393
C41.99812.94742.94742.97262.97261.10203.20163.93931.10143.93933.20161.1014
H52.60061.10202.97262.97262.58622.58621.80383.34413.97571.80383.97573.3441
H62.60062.97261.10202.97262.58622.58623.97571.80383.34413.34411.80383.9757
H72.60062.97262.97261.10202.58622.58623.34413.97571.80383.97573.34411.8038
H82.57511.10143.93933.20161.80383.97573.34414.25174.25171.78754.85373.0662
H92.57513.20161.10143.93933.34411.80383.97574.25174.25173.06621.78754.8537
H102.57513.93933.20161.10143.97573.34411.80384.25174.25174.85373.06621.7875
H112.57511.10143.20163.93931.80383.34413.97571.78753.06624.85374.25174.2517
H122.57513.93931.10143.20163.97571.80383.34414.85371.78753.06624.25174.2517
H132.57513.20163.93931.10143.34413.97571.80383.06624.85371.78754.25174.2517

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 110.699 As1 C2 H8 108.904
As1 C2 H11 108.904 As1 C3 H6 110.699
As1 C3 H9 108.904 As1 C3 H12 108.904
As1 C4 H7 110.699 As1 C4 H10 108.904
As1 C4 H13 108.904 C2 As1 C3 95.047
C2 As1 C4 95.047 C3 As1 C4 95.047
H5 C2 H8 109.903 H5 C2 H11 109.903
H6 C3 H9 109.903 H6 C3 H12 109.903
H7 C4 H10 109.903 H7 C4 H13 109.903
H8 C2 H11 108.483 H9 C3 H12 108.483
H10 C4 H13 108.483
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 As 0.588      
2 C -0.723      
3 C -0.723      
4 C -0.723      
5 H 0.171      
6 H 0.171      
7 H 0.171      
8 H 0.178      
9 H 0.178      
10 H 0.178      
11 H 0.178      
12 H 0.178      
13 H 0.178      


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 -1.078 1.078
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.466 0.000 0.000
y 0.000 -38.466 0.000
z 0.000 0.000 -41.787
Traceless
 xyz
x 1.661 0.000 0.000
y 0.000 1.661 0.000
z 0.000 0.000 -3.321
Polar
3z2-r2-6.643
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 9.269 0.000 0.000
y 0.000 9.269 0.001
z 0.000 0.001 7.708


<r2> (average value of r2) Å2
<r2> 141.747
(<r2>)1/2 11.906