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

using model chemistry: HF/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-124.748177
Energy at 298.15K-124.755554
Nuclear repulsion energy102.258210
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/LANL2DZ
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 3301 2970 73.54      
2 A1 3199 2878 31.45      
3 A1 1630 1467 14.26      
4 A1 1484 1336 8.02      
5 A1 1044 940 58.87      
6 A1 597 537 2.50      
7 A1 253 228 1.03      
8 A2 3300 2970 0.00      
9 A2 1607 1446 0.00      
10 A2 878 790 0.00      
11 A2 143 129 0.00      
12 E 3301 2971 39.83      
12 E 3301 2971 39.83      
13 E 3298 2968 6.33      
13 E 3298 2968 6.33      
14 E 3197 2877 63.55      
14 E 3197 2877 63.55      
15 E 1622 1459 15.20      
15 E 1622 1459 15.20      
16 E 1613 1452 6.56      
16 E 1613 1452 6.56      
17 E 1462 1316 10.16      
17 E 1462 1316 10.16      
18 E 1032 928 25.43      
18 E 1032 928 25.43      
19 E 916 825 0.34      
19 E 916 825 0.34      
20 E 625 563 18.27      
20 E 625 563 18.27      
21 E 230 207 0.43      
21 E 230 207 0.43      
22 E 174 156 0.00      
22 E 174 156 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 26187.5 cm-1
Scaled (by 0.8999) Zero Point Vibrational Energy (zpe) 23566.1 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 HF/LANL2DZ
ABC
0.15563 0.15563 0.11113

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/LANL2DZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
As1 0.000 0.000 0.464
C2 0.000 1.728 -0.509
C3 1.497 -0.864 -0.509
C4 -1.497 -0.864 -0.509
H5 0.000 1.576 -1.582
H6 1.365 -0.788 -1.582
H7 -1.365 -0.788 -1.582
H8 -0.878 2.301 -0.234
H9 2.432 -0.390 -0.234
H10 -1.554 -1.911 -0.234
H11 0.878 2.301 -0.234
H12 1.554 -1.911 -0.234
H13 -2.432 -0.390 -0.234

Atom - Atom Distances (Å)
  As1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
As11.98311.98311.98312.58282.58282.58282.55972.55972.55972.55972.55972.5597
C21.98312.99322.99321.08403.05733.05731.08353.23643.96611.08353.96613.2364
C31.98312.99322.99323.05731.08403.05733.96611.08353.23643.23641.08353.9661
C41.98312.99322.99323.05733.05731.08403.23643.96611.08353.96613.23641.0835
H52.58281.08403.05733.05732.73022.73021.76403.40514.04831.76404.04833.4051
H62.58283.05731.08403.05732.73022.73024.04831.76403.40513.40511.76404.0483
H72.58283.05733.05731.08402.73022.73023.40514.04831.76404.04833.40511.7640
H82.55971.08353.96613.23641.76404.04833.40514.26544.26541.75594.86313.1071
H92.55973.23641.08353.96613.40511.76404.04834.26544.26543.10711.75594.8631
H102.55973.96613.23641.08354.04833.40511.76404.26544.26544.86313.10711.7559
H112.55971.08353.23643.96611.76403.40514.04831.75593.10714.86314.26544.2654
H122.55973.96611.08353.23644.04831.76403.40514.86311.75593.10714.26544.2654
H132.55973.23643.96611.08353.40514.04831.76403.10714.86311.75594.26544.2654

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 111.322 As1 C2 H8 109.656
As1 C2 H11 109.656 As1 C3 H6 111.322
As1 C3 H9 109.656 As1 C3 H12 109.656
As1 C4 H7 111.322 As1 C4 H10 109.656
As1 C4 H13 109.656 C2 As1 C3 97.995
C2 As1 C4 97.995 C3 As1 C4 97.995
H5 C2 H8 108.949 H5 C2 H11 108.949
H6 C3 H9 108.949 H6 C3 H12 108.949
H7 C4 H10 108.949 H7 C4 H13 108.949
H8 C2 H11 108.249 H9 C3 H12 108.249
H10 C4 H13 108.249
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 As 0.737      
2 C -0.869      
3 C -0.869      
4 C -0.869      
5 H 0.205      
6 H 0.205      
7 H 0.205      
8 H 0.209      
9 H 0.209      
10 H 0.209      
11 H 0.209      
12 H 0.209      
13 H 0.209      


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 -1.079 1.079
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.455 0.000 0.000
y 0.000 -35.455 0.000
z 0.000 0.000 -39.088
Traceless
 xyz
x 1.816 0.000 0.000
y 0.000 1.816 0.000
z 0.000 0.000 -3.632
Polar
3z2-r2-7.264
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 9.271 0.000 0.000
y 0.000 9.271 0.000
z 0.000 0.000 7.240


<r2> (average value of r2) Å2
<r2> 134.073
(<r2>)1/2 11.579