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

using model chemistry: B3LYP/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-28.562960
Energy at 298.15K-28.569934
Nuclear repulsion energy68.451695
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/CEP-121G
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 3098 3019 66.31      
2 A1 2987 2911 28.58      
3 A1 1505 1466 20.55      
4 A1 1339 1305 5.50      
5 A1 944 920 53.12      
6 A1 536 522 2.98      
7 A1 231 225 1.48      
8 A2 3100 3021 0.00      
9 A2 1478 1440 0.00      
10 A2 793 773 0.00      
11 A2 129 126 0.00      
12 E 3102 3023 34.01      
12 E 3102 3023 34.06      
13 E 3095 3017 8.99      
13 E 3095 3017 8.99      
14 E 2987 2911 40.83      
14 E 2987 2911 40.83      
15 E 1493 1455 15.68      
15 E 1493 1455 15.68      
16 E 1488 1450 5.73      
16 E 1488 1450 5.72      
17 E 1310 1277 5.88      
17 E 1310 1277 5.88      
18 E 932 909 18.50      
18 E 932 909 18.51      
19 E 819 798 0.14      
19 E 819 798 0.14      
20 E 560 546 15.25      
20 E 560 546 15.25      
21 E 207 202 0.26      
21 E 207 202 0.26      
22 E 158 154 0.00      
22 E 158 154 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24220.2 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 23602.6 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 B3LYP/CEP-121G
ABC
0.15086 0.15086 0.10953

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
As1 0.000 0.000 0.481
C2 0.000 1.741 -0.530
C3 1.508 -0.871 -0.530
C4 -1.508 -0.871 -0.530
H5 0.000 1.576 -1.615
H6 1.365 -0.788 -1.615
H7 -1.365 -0.788 -1.615
H8 -0.890 2.317 -0.249
H9 2.452 -0.388 -0.249
H10 -1.562 -1.929 -0.249
H11 0.890 2.317 -0.249
H12 1.562 -1.929 -0.249
H13 -2.452 -0.388 -0.249

Atom - Atom Distances (Å)
  As1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
As12.01352.01352.01352.62272.62272.62272.58722.58722.58722.58722.58722.5872
C22.01353.01583.01581.09743.07223.07221.09663.25903.99871.09663.99873.2590
C32.01353.01583.01583.07221.09743.07223.99871.09663.25903.25901.09663.9987
C42.01353.01583.01583.07223.07221.09743.25903.99871.09663.99873.25901.0966
H52.62271.09743.07223.07222.73032.73031.79063.42544.07351.79064.07353.4254
H62.62273.07221.09743.07222.73032.73034.07351.79063.42543.42541.79064.0735
H72.62273.07223.07221.09742.73032.73033.42544.07351.79064.07353.42541.7906
H82.58721.09663.99873.25901.79064.07353.42544.29904.29901.78014.90323.1230
H92.58723.25901.09663.99873.42541.79064.07354.29904.29903.12301.78014.9032
H102.58723.99873.25901.09664.07353.42541.79064.29904.29904.90323.12301.7801
H112.58721.09663.25903.99871.79063.42544.07351.78013.12304.90324.29904.2990
H122.58723.99871.09663.25904.07351.79063.42544.90321.78013.12304.29904.2990
H132.58723.25903.99871.09663.42544.07351.79063.12304.90321.78014.29904.2990

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 111.507 As1 C2 H8 108.988
As1 C2 H11 108.988 As1 C3 H6 111.507
As1 C3 H9 108.988 As1 C3 H12 108.988
As1 C4 H7 111.507 As1 C4 H10 108.988
As1 C4 H13 108.988 C2 As1 C3 96.990
C2 As1 C4 96.990 C3 As1 C4 96.990
H5 C2 H8 109.397 H5 C2 H11 109.397
H6 C3 H9 109.397 H6 C3 H12 109.397
H7 C4 H10 109.397 H7 C4 H13 109.397
H8 C2 H11 108.509 H9 C3 H12 108.509
H10 C4 H13 108.509
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 As 0.681      
2 C -0.708      
3 C -0.708      
4 C -0.708      
5 H 0.157      
6 H 0.157      
7 H 0.157      
8 H 0.162      
9 H 0.162      
10 H 0.162      
11 H 0.162      
12 H 0.162      
13 H 0.162      


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 -0.992 0.992
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.987 0.000 0.000
y 0.000 -34.987 0.000
z 0.000 0.000 -38.194
Traceless
 xyz
x 1.603 0.000 0.000
y 0.000 1.603 0.000
z 0.000 0.000 -3.206
Polar
3z2-r2-6.412
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 10.345 0.000 0.000
y 0.000 10.345 0.001
z 0.000 0.001 8.644


<r2> (average value of r2) Å2
<r2> 116.044
(<r2>)1/2 10.772