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

using model chemistry: CCD/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CCD/6-31+G**
 hartrees
Energy at 0K-2351.483508
Energy at 298.15K-2351.490634
Nuclear repulsion energy290.874442
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 CCD/6-31+G**
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 3202 3018 37.68      
2 A1 3102 2923 24.53      
3 A1 1522 1435 9.54      
4 A1 1365 1286 3.26      
5 A1 947 892 26.44      
6 A1 583 549 2.11      
7 A1 243 229 1.64      
8 A2 3210 3025 0.00      
9 A2 1504 1417 0.00      
10 A2 792 746 0.00      
11 A2 137 129 0.00      
12 E 3211 3025 16.26      
12 E 3211 3025 16.26      
13 E 3202 3017 5.43      
13 E 3202 3017 5.43      
14 E 3103 2924 23.90      
14 E 3103 2924 23.90      
15 E 1518 1430 9.77      
15 E 1518 1430 9.77      
16 E 1507 1420 4.47      
16 E 1507 1420 4.47      
17 E 1340 1263 0.85      
17 E 1340 1263 0.85      
18 E 942 888 12.44      
18 E 942 888 12.44      
19 E 834 785 0.00      
19 E 834 785 0.00      
20 E 598 563 14.90      
20 E 598 563 14.90      
21 E 223 210 0.34      
21 E 223 210 0.34      
22 E 164 155 0.04      
22 E 164 155 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 24943.3 cm-1
Scaled (by 0.9423) Zero Point Vibrational Energy (zpe) 23504.1 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 CCD/6-31+G**
ABC
0.15754 0.15754 0.11472

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
As1 0.000 0.000 0.473
C2 0.000 1.698 -0.517
C3 1.471 -0.849 -0.517
C4 -1.471 -0.849 -0.517
H5 0.000 1.521 -1.594
H6 1.317 -0.761 -1.594
H7 -1.317 -0.761 -1.594
H8 -0.884 2.278 -0.251
H9 2.415 -0.374 -0.251
H10 -1.531 -1.904 -0.251
H11 0.884 2.278 -0.251
H12 1.531 -1.904 -0.251
H13 -2.415 -0.374 -0.251

Atom - Atom Distances (Å)
  As1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
As11.96591.96591.96592.56632.56632.56632.54872.54872.54872.54872.54872.5487
C21.96592.94162.94161.09122.99022.99021.09003.19343.92371.09003.92373.1934
C31.96592.94162.94162.99021.09122.99023.92371.09003.19343.19341.09003.9237
C41.96592.94162.94162.99022.99021.09123.19343.92371.09003.92373.19341.0900
H52.56631.09122.99022.99022.63492.63491.77693.35083.98541.77693.98543.3508
H62.56632.99021.09122.99022.63492.63493.98541.77693.35083.35081.77693.9854
H72.56632.99022.99021.09122.63492.63493.35083.98541.77693.98543.35081.7769
H82.54871.09003.92373.19341.77693.98543.35084.23274.23271.76714.83003.0629
H92.54873.19341.09003.92373.35081.77693.98544.23274.23273.06291.76714.8300
H102.54873.92373.19341.09003.98543.35081.77694.23274.23274.83003.06291.7671
H112.54871.09003.19343.92371.77693.35083.98541.76713.06294.83004.23274.2327
H122.54873.92371.09003.19343.98541.77693.35084.83001.76713.06294.23274.2327
H132.54873.19343.92371.09003.35083.98541.77693.06294.83001.76714.23274.2327

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 110.902 As1 C2 H8 109.684
As1 C2 H11 109.684 As1 C3 H6 110.902
As1 C3 H9 109.684 As1 C3 H12 109.684
As1 C4 H7 110.902 As1 C4 H10 109.684
As1 C4 H13 109.684 C2 As1 C3 96.864
C2 As1 C4 96.864 C3 As1 C4 96.864
H5 C2 H8 109.108 H5 C2 H11 109.108
H6 C3 H9 109.108 H6 C3 H12 109.108
H7 C4 H10 109.108 H7 C4 H13 109.108
H8 C2 H11 108.309 H9 C3 H12 108.309
H10 C4 H13 108.309
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability