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All results from a given calculation for N(SiH3)3 (trisilylamine)

using model chemistry: B2PLYP=FULL/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3H 1A'
Energy calculated at B2PLYP=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-928.243801
Energy at 298.15K 
HF Energy-928.061952
Nuclear repulsion energy287.572602
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 B2PLYP=FULL/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 2242 2157 0.02 894.93 0.00 0.00
2 A' 2233 2148 0.00 72.81 0.75 0.86
3 A' 1019 981 0.00 2.06 0.73 0.84
4 A' 965 928 0.00 5.95 0.75 0.86
5 A' 659 633 0.00 0.23 0.21 0.34
6 A' 471 453 0.00 22.67 0.05 0.09
7 A" 2234 2149 375.66 0.00 0.75 0.86
8 A" 950 914 166.64 0.00 0.75 0.86
9 A" 728 701 106.52 0.00 0.75 0.86
10 A" 166 160 0.98 0.00 0.75 0.86
11 A" 89 86 0.02 0.00 0.75 0.86
12 E' 2243 2158 222.62 65.55 0.75 0.86
12 E' 2243 2158 222.80 65.45 0.75 0.86
13 E' 2229 2144 72.20 4.44 0.75 0.86
13 E' 2229 2144 72.31 4.43 0.75 0.86
14 E' 993 955 20.47 2.26 0.75 0.86
14 E' 993 955 20.53 2.26 0.75 0.86
15 E' 970 933 141.07 8.63 0.75 0.86
15 E' 970 933 141.11 8.63 0.75 0.86
16 E' 939 903 672.00 4.45 0.75 0.86
16 E' 939 903 672.00 4.45 0.75 0.86
17 E' 686 660 4.33 5.18 0.75 0.86
17 E' 686 660 4.33 5.18 0.75 0.86
18 E' 177 170 0.54 0.25 0.75 0.86
18 E' 176 170 0.54 0.25 0.75 0.86
19 E" 2231 2146 0.00 125.51 0.75 0.86
19 E" 2231 2146 0.00 125.50 0.75 0.86
20 E" 952 915 0.02 11.41 0.75 0.86
20 E" 952 915 0.00 11.41 0.75 0.86
21 E" 691 664 0.00 4.26 0.75 0.86
21 E" 691 664 0.00 4.26 0.75 0.86
22 E" 85 82 0.00 0.11 0.75 0.86
22 E" 85 82 0.00 0.11 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18074.4 cm-1
Scaled (by 0.9618) Zero Point Vibrational Energy (zpe) 17383.9 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 B2PLYP=FULL/aug-cc-pVDZ
ABC
0.09993 0.09993 0.05272

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/aug-cc-pVDZ

Point Group is C3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.000
Si2 0.000 1.772 0.000
Si3 -1.535 -0.886 0.000
Si4 1.535 -0.886 0.000
H5 -1.424 2.213 0.000
H6 -1.205 -2.339 0.000
H7 2.628 0.126 0.000
H8 0.687 2.310 1.208
H9 0.687 2.310 -1.208
H10 -2.345 -0.560 1.208
H11 -2.345 -0.560 -1.208
H12 1.657 -1.750 1.208
H13 1.657 -1.750 -1.208

Atom - Atom Distances (Å)
  N1 Si2 Si3 Si4 H5 H6 H7 H8 H9 H10 H11 H12 H13
N11.77241.77241.77242.63142.63142.63142.69622.69622.69622.69622.69622.6962
Si21.77243.06993.06991.49024.28473.10131.49031.49033.52083.52084.07634.0763
Si31.77243.06993.06993.10131.49024.28474.07634.07631.49031.49033.52083.5208
Si41.77243.06993.06994.28473.10131.49023.52083.52084.07634.07631.49031.4903
H52.63141.49023.10134.28474.55774.55772.43402.43403.16183.16185.16335.1633
H62.63144.28471.49023.10134.55774.55775.16335.16332.43402.43403.16173.1617
H72.63143.10134.28471.49024.55774.55773.16173.16175.16335.16332.43402.4340
H82.69621.49034.07633.52082.43405.16333.16172.41584.17504.82364.17504.8236
H92.69621.49034.07633.52082.43405.16333.16172.41584.82364.17504.82364.1750
H102.69623.52081.49034.07633.16182.43405.16334.17504.82362.41584.17504.8236
H112.69623.52081.49034.07633.16182.43405.16334.82364.17502.41584.82364.1750
H122.69624.07633.52081.49035.16333.16172.43404.17504.82364.17504.82362.4158
H132.69624.07633.52081.49035.16333.16172.43404.82364.17504.82364.17502.4158

picture of trisilylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 Si2 H5 107.198 N1 Si2 H8 111.160
N1 Si2 H9 111.160 N1 Si3 H6 107.198
N1 Si3 H10 111.160 N1 Si3 H11 111.160
N1 Si4 H7 107.198 N1 Si4 H12 111.160
N1 Si4 H13 111.160 Si2 N1 Si3 120.000
Si2 N1 Si4 120.000 Si3 N1 Si4 120.000
H5 Si2 H8 109.503 H5 Si2 H9 109.503
H6 Si3 H10 109.503 H6 Si3 H11 109.503
H7 Si4 H12 109.504 H7 Si4 H13 109.504
H8 Si2 H9 108.298 H10 Si3 H11 108.298
H12 Si4 H13 108.298
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability