return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: QCISD/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 QCISD/6-31G*
 hartrees
Energy at 0K-2351.392076
Energy at 298.15K-2351.399457
Nuclear repulsion energy290.556508
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 QCISD/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3166 3015 32.54      
2 A1 3068 2922 16.71      
3 A1 1552 1478 6.07      
4 A1 1369 1304 3.20      
5 A1 941 896 35.91      
6 A1 578 551 1.48      
7 A1 265 253 0.52      
8 A2 3167 3016 0.00      
9 A2 1521 1448 0.00      
10 A2 799 761 0.00      
11 A2 180 172 0.00      
12 E 3168 3017 15.98      
12 E 3168 3017 15.98      
13 E 3164 3013 5.15      
13 E 3164 3013 5.15      
14 E 3069 2923 16.94      
14 E 3069 2923 16.94      
15 E 1535 1462 9.31      
15 E 1535 1462 9.31      
16 E 1526 1453 2.42      
16 E 1526 1453 2.42      
17 E 1344 1280 0.48      
17 E 1344 1280 0.48      
18 E 948 903 17.29      
18 E 948 903 17.29      
19 E 822 783 0.34      
19 E 822 783 0.34      
20 E 599 570 13.04      
20 E 599 570 13.04      
21 E 243 231 0.14      
21 E 243 231 0.14      
22 E 208 198 0.01      
22 E 208 198 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 24927.7 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 23738.7 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 QCISD/6-31G*
ABC
0.15726 0.15726 0.11463

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
As1 0.000 0.000 0.473
C2 0.000 1.699 -0.519
C3 1.471 -0.850 -0.519
C4 -1.471 -0.850 -0.519
H5 0.000 1.520 -1.601
H6 1.316 -0.760 -1.601
H7 -1.316 -0.760 -1.601
H8 -0.887 2.279 -0.243
H9 2.417 -0.371 -0.243
H10 -1.530 -1.908 -0.243
H11 0.887 2.279 -0.243
H12 1.530 -1.908 -0.243
H13 -2.417 -0.371 -0.243

Atom - Atom Distances (Å)
  As1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
As11.96751.96751.96752.57072.57072.57072.54802.54802.54802.54802.54802.5480
C21.96752.94282.94281.09612.99102.99101.09533.19413.92751.09533.92753.1941
C31.96752.94282.94282.99101.09612.99103.92751.09533.19413.19411.09533.9275
C41.96752.94282.94282.99102.99101.09613.19413.92751.09533.92753.19411.0953
H52.57071.09612.99102.99102.63192.63191.79053.35533.99111.79053.99113.3553
H62.57072.99101.09612.99102.63192.63193.99111.79053.35533.35531.79053.9911
H72.57072.99102.99101.09612.63192.63193.35533.99111.79053.99113.35531.7905
H82.54801.09533.92753.19411.79053.99113.35534.23544.23541.77474.83413.0593
H92.54803.19411.09533.92753.35531.79053.99114.23544.23543.05931.77474.8341
H102.54803.92753.19411.09533.99113.35531.79054.23544.23544.83413.05931.7747
H112.54801.09533.19413.92751.79053.35533.99111.77473.05934.83414.23544.2354
H122.54803.92751.09533.19413.99111.79053.35534.83411.77473.05934.23544.2354
H132.54803.19413.92751.09533.35533.99111.79053.05934.83411.77474.23544.2354

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 110.860 As1 C2 H8 109.260
As1 C2 H11 109.260 As1 C3 H6 110.860
As1 C3 H9 109.260 As1 C3 H12 109.260
As1 C4 H7 110.860 As1 C4 H10 109.260
As1 C4 H13 109.260 C2 As1 C3 96.805
C2 As1 C4 96.805 C3 As1 C4 96.805
H5 C2 H8 109.593 H5 C2 H11 109.593
H6 C3 H9 109.593 H6 C3 H12 109.593
H7 C4 H10 109.593 H7 C4 H13 109.593
H8 C2 H11 108.228 H9 C3 H12 108.228
H10 C4 H13 108.228
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability