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

using model chemistry: QCISD/6-311G*

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/6-311G*
 hartrees
Energy at 0K-2353.605652
Energy at 298.15K-2353.612742
Nuclear repulsion energy289.255093
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/6-311G*
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 3124 2991 38.42      
2 A1 3034 2904 21.07      
3 A1 1515 1451 11.67      
4 A1 1354 1296 5.09      
5 A1 935 895 35.58      
6 A1 579 554 1.84      
7 A1 238 228 1.04      
8 A2 3128 2995 0.00      
9 A2 1489 1426 0.00      
10 A2 785 751 0.00      
11 A2 140 134 0.00      
12 E 3129 2996 17.82      
12 E 3129 2996 17.82      
13 E 3123 2990 5.64      
13 E 3123 2990 5.64      
14 E 3034 2905 21.55      
14 E 3034 2905 21.55      
15 E 1503 1439 12.47      
15 E 1503 1439 12.47      
16 E 1496 1432 3.65      
16 E 1496 1432 3.65      
17 E 1330 1273 1.98      
17 E 1330 1273 1.98      
18 E 929 890 15.55      
18 E 929 890 15.55      
19 E 823 788 0.67      
19 E 823 788 0.67      
20 E 596 570 14.38      
20 E 596 570 14.38      
21 E 218 209 0.29      
21 E 218 209 0.29      
22 E 165 158 0.00      
22 E 165 158 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24505.4 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 23461.4 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/6-311G*
ABC
0.15568 0.15568 0.11359

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
As1 0.000 0.000 0.477
C2 0.000 1.706 -0.522
C3 1.478 -0.853 -0.522
C4 -1.478 -0.853 -0.522
H5 0.000 1.530 -1.604
H6 1.325 -0.765 -1.604
H7 -1.325 -0.765 -1.604
H8 -0.887 2.291 -0.256
H9 2.428 -0.378 -0.256
H10 -1.541 -1.914 -0.256
H11 0.887 2.291 -0.256
H12 1.541 -1.914 -0.256
H13 -2.428 -0.378 -0.256

Atom - Atom Distances (Å)
  As1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
As11.97721.97721.97722.58252.58252.58252.56392.56392.56392.56392.56392.5639
C21.97722.95552.95551.09603.00563.00561.09523.21063.94341.09523.94343.2106
C31.97722.95552.95553.00561.09603.00563.94341.09523.21063.21061.09523.9434
C41.97722.95552.95553.00563.00561.09603.21063.94341.09523.94343.21061.0952
H52.58251.09603.00563.00562.65022.65021.78403.36904.00641.78404.00643.3690
H62.58253.00561.09603.00562.65022.65024.00641.78403.36903.36901.78404.0064
H72.58253.00563.00561.09602.65022.65023.36904.00641.78404.00643.36901.7840
H82.56391.09523.94343.21061.78404.00643.36904.25574.25571.77374.85563.0819
H92.56393.21061.09523.94343.36901.78404.00644.25574.25573.08191.77374.8556
H102.56393.94343.21061.09524.00643.36901.78404.25574.25574.85563.08191.7737
H112.56391.09523.21063.94341.78403.36904.00641.77373.08194.85564.25574.2557
H122.56393.94341.09523.21064.00641.78403.36904.85561.77373.08194.25574.2557
H132.56393.21063.94341.09523.36904.00641.78403.08194.85561.77374.25574.2557

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 111.083 As1 C2 H8 109.769
As1 C2 H11 109.769 As1 C3 H6 111.083
As1 C3 H9 109.769 As1 C3 H12 109.769
As1 C4 H7 111.083 As1 C4 H10 109.769
As1 C4 H13 109.769 C2 As1 C3 96.735
C2 As1 C4 96.735 C3 As1 C4 96.735
H5 C2 H8 109.011 H5 C2 H11 109.011
H6 C3 H9 109.011 H6 C3 H12 109.011
H7 C4 H10 109.011 H7 C4 H13 109.011
H8 C2 H11 108.141 H9 C3 H12 108.141
H10 C4 H13 108.141
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability