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

using model chemistry: B3LYP/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-2355.755844
Energy at 298.15K-2355.762853
Nuclear repulsion energy288.448789
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/aug-cc-pVTZ
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 3113 3012 32.72      
2 A1 3031 2933 19.62      
3 A1 1481 1433 8.18      
4 A1 1299 1257 3.30      
5 A1 905 876 25.48      
6 A1 556 538 2.75      
7 A1 234 226 1.16      
8 A2 3118 3016 0.00      
9 A2 1458 1411 0.00      
10 A2 765 740 0.00      
11 A2 147 142 0.00      
12 E 3118 3017 14.32      
12 E 3118 3017 14.32      
13 E 3114 3013 2.90      
13 E 3114 3013 2.91      
14 E 3033 2935 19.95      
14 E 3033 2935 19.95      
15 E 1472 1424 8.60      
15 E 1472 1424 8.59      
16 E 1464 1416 3.08      
16 E 1464 1416 3.08      
17 E 1275 1234 0.47      
17 E 1275 1234 0.47      
18 E 905 875 13.51      
18 E 905 875 13.51      
19 E 797 771 0.23      
19 E 797 771 0.23      
20 E 571 553 16.49      
20 E 571 553 16.49      
21 E 211 204 0.23      
21 E 211 204 0.23      
22 E 168 162 0.02      
22 E 168 162 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 24179.6 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 23393.8 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/aug-cc-pVTZ
ABC
0.15507 0.15507 0.11184

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
As1 0.000 0.000 0.470
C2 0.000 1.722 -0.517
C3 1.492 -0.861 -0.517
C4 -1.492 -0.861 -0.517
H5 0.000 1.563 -1.595
H6 1.353 -0.781 -1.595
H7 -1.353 -0.781 -1.595
H8 -0.883 2.294 -0.238
H9 2.429 -0.382 -0.238
H10 -1.545 -1.912 -0.238
H11 0.883 2.294 -0.238
H12 1.545 -1.912 -0.238
H13 -2.429 -0.382 -0.238

Atom - Atom Distances (Å)
  As1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
As11.98541.98541.98542.59022.59022.59022.55852.55852.55852.55852.55852.5585
C21.98542.98312.98311.08973.04343.04341.08903.22583.95931.08903.95933.2258
C31.98542.98312.98313.04341.08973.04343.95931.08903.22583.22581.08903.9593
C41.98542.98312.98313.04343.04341.08973.22583.95931.08903.95933.22581.0890
H52.59021.08973.04343.04342.70702.70701.77743.39494.03831.77744.03833.3949
H62.59023.04341.08973.04342.70702.70704.03831.77743.39493.39491.77744.0383
H72.59023.04343.04341.08972.70702.70703.39494.03831.77744.03833.39491.7774
H82.55851.08903.95933.22581.77744.03833.39494.25854.25851.76674.85753.0908
H92.55853.22581.08903.95933.39491.77744.03834.25854.25853.09081.76674.8575
H102.55853.95933.22581.08904.03833.39491.77744.25854.25854.85753.09081.7667
H112.55851.08903.22583.95931.77743.39494.03831.76673.09084.85754.25854.2585
H122.55853.95931.08903.22584.03831.77743.39494.85751.76673.09084.25854.2585
H132.55853.22583.95931.08903.39494.03831.77743.09084.85751.76674.25854.2585

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 111.420 As1 C2 H8 109.148
As1 C2 H11 109.148 As1 C3 H6 111.420
As1 C3 H9 109.148 As1 C3 H12 109.148
As1 C4 H7 111.420 As1 C4 H10 109.148
As1 C4 H13 109.148 C2 As1 C3 97.400
C2 As1 C4 97.400 C3 As1 C4 97.400
H5 C2 H8 109.328 H5 C2 H11 109.328
H6 C3 H9 109.328 H6 C3 H12 109.328
H7 C4 H10 109.328 H7 C4 H13 109.328
H8 C2 H11 108.415 H9 C3 H12 108.415
H10 C4 H13 108.415
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 As 0.754      
2 C -0.767      
3 C -0.767      
4 C -0.767      
5 H 0.187      
6 H 0.187      
7 H 0.187      
8 H 0.165      
9 H 0.165      
10 H 0.165      
11 H 0.165      
12 H 0.165      
13 H 0.165      


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 -0.931 0.931
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.209 0.000 0.000
y 0.000 -39.209 0.000
z 0.000 0.000 -42.476
Traceless
 xyz
x 1.634 0.000 0.000
y 0.000 1.634 0.000
z 0.000 0.000 -3.267
Polar
3z2-r2-6.534
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 11.659 0.000 0.000
y 0.000 11.658 0.001
z 0.000 0.001 10.225


<r2> (average value of r2) Å2
<r2> 142.250
(<r2>)1/2 11.927