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

using model chemistry: HF/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at HF/SDD
 hartrees
Energy at 0K-124.828558
Energy at 298.15K-124.835905
Nuclear repulsion energy102.275100
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 HF/SDD
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 3299 2970 72.14      
2 A1 3196 2877 29.78      
3 A1 1629 1466 15.15      
4 A1 1479 1331 7.44      
5 A1 1039 935 63.12      
6 A1 596 536 4.04      
7 A1 251 226 1.27      
8 A2 3297 2969 0.00      
9 A2 1607 1447 0.00      
10 A2 869 782 0.00      
11 A2 142 128 0.00      
12 E 3299 2970 41.84      
12 E 3299 2970 41.84      
13 E 3296 2968 5.15      
13 E 3296 2968 5.15      
14 E 3194 2876 64.72      
14 E 3194 2876 64.72      
15 E 1620 1459 16.37      
15 E 1620 1459 16.37      
16 E 1612 1452 5.76      
16 E 1612 1452 5.76      
17 E 1455 1310 9.38      
17 E 1455 1310 9.38      
18 E 1026 924 24.87      
18 E 1026 924 24.87      
19 E 906 816 0.28      
19 E 906 816 0.28      
20 E 622 560 18.99      
20 E 622 560 18.99      
21 E 227 205 0.40      
21 E 227 205 0.40      
22 E 172 155 0.00      
22 E 172 155 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 26129.8 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 23527.3 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 HF/SDD
ABC
0.15560 0.15560 0.11127

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/SDD

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
As1 0.000 0.000 0.465
C2 0.000 1.727 -0.510
C3 1.496 -0.864 -0.510
C4 -1.496 -0.864 -0.510
H5 0.000 1.578 -1.584
H6 1.366 -0.789 -1.584
H7 -1.366 -0.789 -1.584
H8 -0.879 2.297 -0.233
H9 2.429 -0.388 -0.233
H10 -1.550 -1.910 -0.233
H11 0.879 2.297 -0.233
H12 1.550 -1.910 -0.233
H13 -2.429 -0.388 -0.233

Atom - Atom Distances (Å)
  As1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
As11.98331.98331.98332.58572.58572.58572.55662.55662.55662.55662.55662.5566
C21.98332.99162.99161.08403.05793.05791.08383.23253.96331.08383.96333.2325
C31.98332.99162.99163.05791.08403.05793.96331.08383.23253.23251.08383.9633
C41.98332.99162.99163.05793.05791.08403.23253.96331.08383.96333.23251.0838
H52.58571.08403.05793.05792.73282.73281.76533.40424.04871.76534.04873.4042
H62.58573.05791.08403.05792.73282.73284.04871.76533.40423.40421.76534.0487
H72.58573.05793.05791.08402.73282.73283.40424.04871.76534.04873.40421.7653
H82.55661.08383.96333.23251.76534.04873.40424.26034.26031.75774.85793.1003
H92.55663.23251.08383.96333.40421.76534.04874.26034.26033.10031.75774.8579
H102.55663.96333.23251.08384.04873.40421.76534.26034.26034.85793.10031.7577
H112.55661.08383.23253.96331.76533.40424.04871.75773.10034.85794.26034.2603
H122.55663.96331.08383.23254.04871.76533.40424.85791.75773.10034.26034.2603
H132.55663.23253.96331.08383.40424.04871.76533.10034.85791.75774.26034.2603

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 111.519 As1 C2 H8 109.403
As1 C2 H11 109.403 As1 C3 H6 111.519
As1 C3 H9 109.403 As1 C3 H12 109.403
As1 C4 H7 111.519 As1 C4 H10 109.403
As1 C4 H13 109.403 C2 As1 C3 97.908
C2 As1 C4 97.908 C3 As1 C4 97.908
H5 C2 H8 109.043 H5 C2 H11 109.043
H6 C3 H9 109.043 H6 C3 H12 109.043
H7 C4 H10 109.043 H7 C4 H13 109.043
H8 C2 H11 108.372 H9 C3 H12 108.372
H10 C4 H13 108.372
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 As 0.794      
2 C -0.882      
3 C -0.882      
4 C -0.882      
5 H 0.204      
6 H 0.204      
7 H 0.204      
8 H 0.207      
9 H 0.207      
10 H 0.207      
11 H 0.207      
12 H 0.207      
13 H 0.207      


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 -1.009 1.009
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.248 0.000 0.000
y 0.000 -35.248 0.000
z 0.000 0.000 -38.605
Traceless
 xyz
x 1.679 0.000 0.000
y 0.000 1.679 0.000
z 0.000 0.000 -3.358
Polar
3z2-r2-6.715
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 9.301 0.000 0.000
y 0.000 9.301 0.000
z 0.000 0.000 7.437


<r2> (average value of r2) Å2
<r2> 133.798
(<r2>)1/2 11.567