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 Al2H6 (dialane)

using model chemistry: CCD/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1AG
Energy calculated at CCD/aug-cc-pVTZ
 hartrees
Energy at 0K-487.583202
Energy at 298.15K-487.590098
HF Energy-487.334085
Nuclear repulsion energy77.788589
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/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 1974 1890 0.00      
2 Ag 1551 1484 0.00      
3 Ag 755 723 0.00      
4 Ag 382 366 0.00      
5 Au 423 405 0.00      
6 B1g 1982 1896 0.00      
7 B1g 467 447 0.00      
8 B1u 1303 1247 336.80      
9 B1u 646 618 279.23      
10 B2g 1424 1362 0.00      
11 B2g 499 477 0.00      
12 B2u 1988 1903 399.11      
13 B2u 865 828 215.27      
14 B2u 219 210 17.46      
15 B3g 765 732 0.00      
16 B3u 1967 1882 128.35      
17 B3u 1508 1443 1143.28      
18 B3u 713 682 652.34      

Unscaled Zero Point Vibrational Energy (zpe) 9714.7 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 9297.0 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/aug-cc-pVTZ
ABC
1.56753 0.15198 0.14489

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/aug-cc-pVTZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Al1 1.307 0.000 0.000
Al2 -1.307 0.000 0.000
H3 0.000 0.000 1.150
H4 0.000 0.000 -1.150
H5 1.997 1.417 0.000
H6 1.997 -1.417 0.000
H7 -1.997 1.417 0.000
H8 -1.997 -1.417 0.000

Atom - Atom Distances (Å)
  Al1 Al2 H3 H4 H5 H6 H7 H8
Al12.61401.74091.74091.57561.57563.59483.5948
Al22.61401.74091.74093.59483.59481.57561.5756
H31.74091.74092.29992.70492.70492.70492.7049
H41.74091.74092.29992.70492.70492.70492.7049
H51.57563.59482.70492.70492.83303.99384.8966
H61.57563.59482.70492.70492.83304.89663.9938
H73.59481.57562.70492.70493.99384.89662.8330
H83.59481.57562.70492.70494.89663.99382.8330

picture of dialane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Al1 Al2 H3 41.343 Al1 Al2 H4 41.343
Al1 Al2 H7 115.969 Al1 Al2 H8 115.969
Al1 H3 Al2 97.315 Al1 H4 Al2 97.315
Al2 Al1 H3 41.343 Al2 Al1 H4 41.343
Al2 Al1 H5 115.969 Al2 Al1 H6 115.969
H3 Al1 H4 82.685 H3 Al1 H5 109.193
H3 Al1 H6 109.193 H3 Al2 H4 82.685
H3 Al2 H7 109.193 H3 Al2 H8 109.193
H4 Al1 H5 109.193 H4 Al1 H6 109.193
H4 Al2 H7 109.193 H4 Al2 H8 109.193
H5 Al1 H6 128.063 H7 Al2 H8 128.063
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability