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

using model chemistry: B2PLYP=FULL/3-21G*

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/3-21G*
 hartrees
Energy at 0K-923.538719
Energy at 298.15K 
HF Energy-923.409593
Nuclear repulsion energy290.202380
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/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 A' 2315 2315 0.00 481.39 0.00 0.01
2 A' 2300 2300 0.00 68.07 0.69 0.81
3 A' 1078 1078 0.00 19.34 0.75 0.86
4 A' 996 996 0.00 15.84 0.75 0.86
5 A' 676 676 0.00 1.03 0.06 0.11
6 A' 495 495 0.00 14.80 0.09 0.17
7 A" 2303 2303 422.30 0.00 0.75 0.86
8 A" 972 972 239.02 0.00 0.75 0.86
9 A" 783 783 131.06 0.00 0.75 0.86
10 A" 220 220 0.40 0.00 0.75 0.86
11 A" 58 58 0.05 0.00 0.75 0.86
12 E' 2310 2310 269.72 55.13 0.75 0.86
12 E' 2310 2310 269.74 55.13 0.75 0.86
13 E' 2298 2298 63.04 0.82 0.75 0.86
13 E' 2298 2298 63.01 0.82 0.75 0.86
14 E' 1038 1038 28.53 4.97 0.75 0.86
14 E' 1038 1038 28.51 4.98 0.75 0.86
15 E' 1009 1009 502.11 2.94 0.75 0.86
15 E' 1009 1009 502.14 2.94 0.75 0.86
16 E' 984 984 443.47 32.27 0.75 0.86
16 E' 984 984 443.49 32.27 0.75 0.86
17 E' 711 711 0.91 12.88 0.75 0.86
17 E' 711 711 0.91 12.88 0.75 0.86
18 E' 190 190 0.47 0.10 0.75 0.86
18 E' 190 190 0.47 0.10 0.75 0.86
19 E" 2300 2300 0.00 87.04 0.75 0.86
19 E" 2300 2300 0.00 87.04 0.75 0.86
20 E" 965 965 0.00 26.98 0.75 0.86
20 E" 965 965 0.00 26.98 0.75 0.86
21 E" 713 713 0.00 14.03 0.75 0.86
21 E" 713 713 0.00 14.03 0.75 0.86
22 E" 73 73 0.00 0.48 0.75 0.86
22 E" 73 73 0.00 0.48 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18690.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18690.4 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/3-21G*
ABC
0.10188 0.10188 0.05376

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/3-21G*

Point Group is C3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.000
Si2 0.000 1.753 0.000
Si3 -1.518 -0.876 0.000
Si4 1.518 -0.876 0.000
H5 -1.416 2.194 0.000
H6 -1.192 -2.324 0.000
H7 2.609 0.129 0.000
H8 0.671 2.313 1.198
H9 0.671 2.313 -1.198
H10 -2.339 -0.575 1.198
H11 -2.339 -0.575 -1.198
H12 1.668 -1.738 1.198
H13 1.668 -1.738 -1.198

Atom - Atom Distances (Å)
  N1 Si2 Si3 Si4 H5 H6 H7 H8 H9 H10 H11 H12 H13
N11.75281.75281.75282.61172.61172.61172.69002.69002.69002.69002.69002.6900
Si21.75283.03593.03591.48354.24723.07251.48321.48323.51083.51084.04974.0497
Si31.75283.03593.03593.07251.48354.24724.04974.04971.48321.48323.51083.5108
Si41.75283.03593.03594.24723.07251.48353.51083.51084.04974.04971.48321.4832
H52.61171.48353.07254.24724.52374.52372.40962.40963.15583.15585.13885.1388
H62.61174.24721.48353.07254.52374.52375.13885.13882.40962.40963.15583.1558
H72.61173.07254.24721.48354.52374.52373.15583.15585.13885.13882.40962.4096
H82.69001.48324.04973.51082.40965.13883.15582.39654.17154.81094.17154.8109
H92.69001.48324.04973.51082.40965.13883.15582.39654.81094.17154.81094.1715
H102.69003.51081.48324.04973.15582.40965.13884.17154.81092.39654.17154.8109
H112.69003.51081.48324.04973.15582.40965.13884.81094.17152.39654.81094.1715
H122.69004.04973.51081.48325.13883.15582.40964.17154.81094.17154.81092.3965
H132.69004.04973.51081.48325.13883.15582.40964.81094.17154.81094.17152.3965

picture of trisilylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 Si2 H5 107.321 N1 Si2 H8 112.195
N1 Si2 H9 112.195 N1 Si3 H6 107.321
N1 Si3 H10 112.195 N1 Si3 H11 112.195
N1 Si4 H7 107.321 N1 Si4 H12 112.195
N1 Si4 H13 112.195 Si2 N1 Si3 120.000
Si2 N1 Si4 120.000 Si3 N1 Si4 120.000
H5 Si2 H8 108.626 H5 Si2 H9 108.626
H6 Si3 H10 108.626 H6 Si3 H11 108.626
H7 Si4 H12 108.626 H7 Si4 H13 108.626
H8 Si2 H9 107.778 H10 Si3 H11 107.778
H12 Si4 H13 107.778
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability