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

using model chemistry: MP4/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP4/3-21G
 hartrees
Energy at 0K-2342.047900
Energy at 298.15K-2342.054885
Nuclear repulsion energy285.509325
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 MP4/3-21G
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 3113 3019        
2 A1 3023 2932        
3 A1 1547 1501        
4 A1 1401 1359        
5 A1 950 921        
6 A1 575 557        
7 A1 211 205        
8 A2 3105 3012        
9 A2 1528 1481        
10 A2 823 798        
11 A2 137 133        
12 E 3114 3020        
12 E 3114 3020        
13 E 3105 3011        
13 E 3105 3011        
14 E 3025 2934        
14 E 3025 2934        
15 E 1541 1494        
15 E 1541 1494        
16 E 1534 1488        
16 E 1534 1488        
17 E 1376 1334        
17 E 1376 1334        
18 E 959 930        
18 E 959 930        
19 E 846 820        
19 E 846 820        
20 E 583 565        
20 E 583 565        
21 E 197 191        
21 E 196 190        
22 E 152 148        
22 E 151 146        

Unscaled Zero Point Vibrational Energy (zpe) 24635.9 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 23891.9 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 MP4/3-21G
ABC
0.15190 0.15190 0.10951

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
As1 0.000 0.000 0.475
C2 0.000 1.740 -0.522
C3 1.507 -0.870 -0.522
C4 -1.507 -0.870 -0.522
H5 0.000 1.582 -1.610
H6 1.370 -0.791 -1.610
H7 -1.370 -0.791 -1.610
H8 -0.892 2.320 -0.245
H9 2.455 -0.388 -0.245
H10 -1.563 -1.932 -0.245
H11 0.892 2.320 -0.245
H12 1.563 -1.932 -0.245
H13 -2.455 -0.388 -0.245

Atom - Atom Distances (Å)
  As1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
As12.00562.00562.00562.61752.61752.61752.58762.58762.58762.58762.58762.5876
C22.00563.01423.01421.09993.07703.07701.09873.26044.00071.09874.00073.2604
C32.00563.01423.01423.07701.09993.07704.00071.09873.26043.26041.09874.0007
C42.00563.01423.01423.07703.07701.09993.26044.00071.09874.00073.26041.0987
H52.61751.09993.07703.07702.73992.73991.78943.43044.08081.78944.08083.4304
H62.61753.07701.09993.07702.73992.73994.08081.78943.43043.43041.78944.0808
H72.61753.07703.07701.09992.73992.73993.43044.08081.78944.08083.43041.7894
H82.58761.09874.00073.26041.78944.08083.43044.30454.30451.78324.90953.1263
H92.58763.26041.09874.00073.43041.78944.08084.30454.30453.12631.78324.9095
H102.58764.00073.26041.09874.08083.43041.78944.30454.30454.90953.12631.7832
H112.58761.09873.26044.00071.78943.43044.08081.78323.12634.90954.30454.3045
H122.58764.00071.09873.26044.08081.78943.43044.90951.78323.12634.30454.3045
H132.58763.26044.00071.09873.43044.08081.78943.12634.90951.78324.30454.3045

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 111.529 As1 C2 H8 109.432
As1 C2 H11 109.432 As1 C3 H6 111.529
As1 C3 H9 109.432 As1 C3 H12 109.432
As1 C4 H7 111.529 As1 C4 H10 109.432
As1 C4 H13 109.432 C2 As1 C3 97.432
C2 As1 C4 97.432 C3 As1 C4 97.432
H5 C2 H8 108.951 H5 C2 H11 108.951
H6 C3 H9 108.951 H6 C3 H12 108.951
H7 C4 H10 108.951 H7 C4 H13 108.951
H8 C2 H11 108.490 H9 C3 H12 108.490
H10 C4 H13 108.490
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability