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

using model chemistry: QCISD/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-2353.654680
Energy at 298.15K-2353.661760
Nuclear repulsion energy288.755164
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/cc-pVDZ
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 3150 3023 33.32      
2 A1 3051 2927 17.41      
3 A1 1478 1418 6.68      
4 A1 1312 1259 2.37      
5 A1 912 875 27.19      
6 A1 582 558 2.06      
7 A1 235 226 0.93      
8 A2 3155 3027 0.00      
9 A2 1457 1398 0.00      
10 A2 764 733 0.00      
11 A2 148 142 0.00      
12 E 3156 3027 14.90      
12 E 3156 3027 14.90      
13 E 3150 3022 5.04      
13 E 3150 3022 5.04      
14 E 3052 2928 21.60      
14 E 3052 2928 21.60      
15 E 1470 1410 6.49      
15 E 1470 1410 6.49      
16 E 1461 1402 3.85      
16 E 1461 1402 3.85      
17 E 1288 1236 0.01      
17 E 1288 1236 0.01      
18 E 909 872 14.48      
18 E 909 872 14.48      
19 E 803 771 0.49      
19 E 803 771 0.49      
20 E 601 577 16.21      
20 E 601 577 16.21      
21 E 217 208 0.29      
21 E 217 208 0.29      
22 E 168 161 0.02      
22 E 168 161 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 24394.3 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 23403.9 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 QCISD/cc-pVDZ
ABC
0.15533 0.15533 0.11339

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
As1 0.000 0.000 0.477
C2 0.000 1.707 -0.522
C3 1.478 -0.853 -0.522
C4 -1.478 -0.853 -0.522
H5 0.000 1.532 -1.614
H6 1.327 -0.766 -1.614
H7 -1.327 -0.766 -1.614
H8 -0.895 2.295 -0.251
H9 2.435 -0.373 -0.251
H10 -1.541 -1.923 -0.251
H11 0.895 2.295 -0.251
H12 1.541 -1.923 -0.251
H13 -2.435 -0.373 -0.251

Atom - Atom Distances (Å)
  As1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
As11.97771.97771.97772.59232.59232.59232.56902.56902.56902.56902.56902.5690
C21.97772.95622.95621.10573.01133.01131.10493.21393.95221.10493.95223.2139
C31.97772.95622.95623.01131.10573.01133.95221.10493.21393.21391.10493.9521
C41.97772.95622.95623.01133.01131.10573.21393.95211.10493.95223.21391.1049
H52.59231.10573.01133.01132.65382.65381.80053.37914.02091.80054.02093.3791
H62.59233.01131.10573.01132.65382.65384.02091.80053.37913.37911.80054.0209
H72.59233.01133.01131.10572.65382.65383.37914.02091.80054.02093.37911.8005
H82.56901.10493.95223.21391.80054.02093.37914.26734.26731.78964.87073.0811
H92.56903.21391.10493.95213.37911.80054.02094.26734.26733.08111.78964.8707
H102.56903.95223.21391.10494.02093.37911.80054.26734.26734.87073.08111.7896
H112.56901.10493.21393.95221.80053.37914.02091.78963.08114.87074.26734.2673
H122.56903.95221.10493.21394.02091.80053.37914.87071.78963.08114.26734.2673
H132.56903.21393.95211.10493.37914.02091.80053.08114.87071.78964.26734.2673

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 111.262 As1 C2 H8 109.616
As1 C2 H11 109.616 As1 C3 H6 111.262
As1 C3 H9 109.616 As1 C3 H12 109.616
As1 C4 H7 111.262 As1 C4 H10 109.616
As1 C4 H13 109.616 C2 As1 C3 96.726
C2 As1 C4 96.726 C3 As1 C4 96.726
H5 C2 H8 109.065 H5 C2 H11 109.065
H6 C3 H9 109.065 H6 C3 H12 109.065
H7 C4 H10 109.065 H7 C4 H13 109.065
H8 C2 H11 108.157 H9 C3 H12 108.157
H10 C4 H13 108.157
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability