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

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-2353.443279
Energy at 298.15K-2353.450551
Nuclear repulsion energy291.092899
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 B3PW91/6-31G*
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 3164 3027 31.40      
2 A1 3063 2931 16.40      
3 A1 1529 1463 6.26      
4 A1 1334 1276 3.37      
5 A1 917 877 40.43      
6 A1 571 546 1.72      
7 A1 258 247 0.36      
8 A2 3165 3028 0.00      
9 A2 1492 1428 0.00      
10 A2 779 746 0.00      
11 A2 171 163 0.00      
12 E 3165 3028 15.11      
12 E 3165 3028 15.11      
13 E 3164 3027 3.07      
13 E 3164 3027 3.07      
14 E 3065 2932 17.63      
14 E 3065 2932 17.64      
15 E 1509 1444 10.73      
15 E 1509 1444 10.73      
16 E 1501 1436 2.52      
16 E 1501 1436 2.52      
17 E 1306 1249 0.96      
17 E 1306 1249 0.96      
18 E 928 888 19.69      
18 E 928 888 19.69      
19 E 795 760 0.72      
19 E 795 760 0.72      
20 E 587 562 14.04      
20 E 587 562 14.04      
21 E 234 224 0.10      
21 E 234 224 0.10      
22 E 211 202 0.00      
22 E 211 202 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24685.5 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 23616.6 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 B3PW91/6-31G*
ABC
0.15804 0.15804 0.11473

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
As1 0.000 0.000 0.469
C2 0.000 1.698 -0.516
C3 1.471 -0.849 -0.516
C4 -1.471 -0.849 -0.516
H5 0.000 1.535 -1.598
H6 1.329 -0.767 -1.598
H7 -1.329 -0.767 -1.598
H8 -0.885 2.274 -0.231
H9 2.412 -0.371 -0.231
H10 -1.527 -1.904 -0.231
H11 0.885 2.274 -0.231
H12 1.527 -1.904 -0.231
H13 -2.412 -0.371 -0.231

Atom - Atom Distances (Å)
  As1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
As11.96281.96281.96282.57432.57432.57432.53882.53882.53882.53882.53882.5388
C21.96282.94112.94111.09433.00283.00281.09383.19053.92241.09383.92243.1905
C31.96282.94112.94113.00281.09433.00283.92241.09383.19053.19051.09383.9224
C41.96282.94112.94113.00283.00281.09433.19053.92241.09383.92243.19051.0938
H52.57431.09433.00283.00282.65862.65861.78843.36424.00301.78844.00303.3642
H62.57433.00281.09433.00282.65862.65864.00301.78843.36423.36421.78844.0030
H72.57433.00283.00281.09432.65862.65863.36424.00301.78844.00303.36421.7884
H82.53881.09383.92243.19051.78844.00303.36424.22694.22701.77014.82423.0542
H92.53883.19051.09383.92243.36421.78844.00304.22694.22703.05421.77014.8242
H102.53883.92243.19051.09384.00303.36421.78844.22704.22704.82423.05421.7701
H112.53881.09383.19053.92241.78843.36424.00301.77013.05424.82424.22704.2269
H122.53883.92241.09383.19054.00301.78843.36424.82421.77013.05424.22704.2270
H132.53883.19053.92241.09383.36424.00301.78843.05424.82421.77014.22694.2270

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 111.532 As1 C2 H8 108.975
As1 C2 H11 108.975 As1 C3 H6 111.532
As1 C3 H9 108.975 As1 C3 H12 108.975
As1 C4 H7 111.532 As1 C4 H10 108.975
As1 C4 H13 108.975 C2 As1 C3 97.042
C2 As1 C4 97.042 C3 As1 C4 97.042
H5 C2 H8 109.633 H5 C2 H11 109.633
H6 C3 H9 109.633 H6 C3 H12 109.633
H7 C4 H10 109.633 H7 C4 H13 109.633
H8 C2 H11 108.020 H9 C3 H12 108.020
H10 C4 H13 108.020
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 As 0.312      
2 C -0.650      
3 C -0.650      
4 C -0.650      
5 H 0.178      
6 H 0.178      
7 H 0.178      
8 H 0.184      
9 H 0.184      
10 H 0.184      
11 H 0.184      
12 H 0.184      
13 H 0.184      


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 -1.140 1.140
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.776 0.000 0.000
y 0.000 -37.776 0.000
z 0.000 0.000 -41.240
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-r2-6.929
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 9.297 0.000 0.000
y 0.000 9.296 0.001
z 0.000 0.001 7.759


<r2> (average value of r2) Å2
<r2> 139.039
(<r2>)1/2 11.791