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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-2352.949536
Energy at 298.15K-2352.956658
Nuclear repulsion energy289.182608
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 PBEPBEultrafine/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 3090 3039 29.85      
2 A1 2990 2940 16.86      
3 A1 1485 1460 5.80      
4 A1 1284 1263 2.81      
5 A1 887 872 37.83      
6 A1 548 539 1.61      
7 A1 254 249 0.28      
8 A2 3093 3042 0.00      
9 A2 1448 1424 0.00      
10 A2 753 740 0.00      
11 A2 174 171 0.00      
12 E 3093 3042 14.14      
12 E 3093 3042 14.14      
13 E 3090 3039 3.64      
13 E 3090 3039 3.64      
14 E 2992 2943 15.55      
14 E 2992 2943 15.55      
15 E 1465 1441 10.17      
15 E 1465 1441 10.17      
16 E 1457 1433 2.31      
16 E 1457 1433 2.31      
17 E 1256 1235 0.40      
17 E 1256 1235 0.40      
18 E 897 882 18.23      
18 E 897 882 18.23      
19 E 770 757 1.07      
19 E 770 757 1.07      
20 E 564 555 13.48      
20 E 564 555 13.48      
21 E 231 228 0.09      
21 E 231 228 0.09      
22 E 201 198 0.00      
22 E 201 198 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24017.4 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 23621.1 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 PBEPBEultrafine/6-31G*
ABC
0.15560 0.15560 0.11398

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
As1 0.000 0.000 0.478
C2 0.000 1.704 -0.526
C3 1.475 -0.852 -0.526
C4 -1.475 -0.852 -0.526
H5 0.000 1.527 -1.614
H6 1.322 -0.763 -1.614
H7 -1.322 -0.763 -1.614
H8 -0.892 2.285 -0.244
H9 2.425 -0.370 -0.244
H10 -1.533 -1.915 -0.244
H11 0.892 2.285 -0.244
H12 1.533 -1.915 -0.244
H13 -2.425 -0.370 -0.244

Atom - Atom Distances (Å)
  As1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
As11.97741.97741.97742.59002.59002.59002.55662.55662.55662.55662.55662.5566
C21.97742.95072.95071.10223.00313.00311.10143.20293.93981.10143.93983.2029
C31.97742.95072.95073.00311.10223.00313.93981.10143.20293.20291.10143.9398
C41.97742.95072.95073.00313.00311.10223.20293.93981.10143.93983.20291.1014
H52.59001.10223.00313.00312.64472.64471.80233.36984.00911.80234.00913.3698
H62.59003.00311.10223.00312.64472.64474.00911.80233.36983.36981.80234.0091
H72.59003.00313.00311.10222.64472.64473.36984.00911.80234.00913.36981.8023
H82.55661.10143.93983.20291.80234.00913.36984.24824.24821.78384.84933.0655
H92.55663.20291.10143.93983.36981.80234.00914.24824.24823.06551.78384.8493
H102.55663.93983.20291.10144.00913.36981.80234.24824.24824.84933.06551.7838
H112.55661.10143.20293.93981.80233.36984.00911.78383.06554.84934.24824.2482
H122.55663.93981.10143.20294.00911.80233.36984.84931.78383.06554.24824.2482
H132.55663.20293.93981.10143.36984.00911.80233.06554.84931.78384.24824.2482

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 111.291 As1 C2 H8 108.928
As1 C2 H11 108.928 As1 C3 H6 111.291
As1 C3 H9 108.928 As1 C3 H12 108.928
As1 C4 H7 111.291 As1 C4 H10 108.928
As1 C4 H13 108.928 C2 As1 C3 96.506
C2 As1 C4 96.506 C3 As1 C4 96.506
H5 C2 H8 109.741 H5 C2 H11 109.741
H6 C3 H9 109.741 H6 C3 H12 109.741
H7 C4 H10 109.741 H7 C4 H13 109.741
H8 C2 H11 108.148 H9 C3 H12 108.148
H10 C4 H13 108.148
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 As 0.286      
2 C -0.612      
3 C -0.612      
4 C -0.612      
5 H 0.168      
6 H 0.168      
7 H 0.168      
8 H 0.174      
9 H 0.174      
10 H 0.174      
11 H 0.174      
12 H 0.174      
13 H 0.174      


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 -1.099 1.099
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.921 0.000 0.000
y 0.000 -37.921 0.000
z 0.000 0.000 -41.264
Traceless
 xyz
x 1.671 0.000 0.000
y 0.000 1.671 0.000
z 0.000 0.000 -3.342
Polar
3z2-r2-6.685
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 9.503 0.000 0.000
y 0.000 9.502 -0.000
z 0.000 -0.000 7.936


<r2> (average value of r2) Å2
<r2> 140.400
(<r2>)1/2 11.849