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

using model chemistry: B2PLYP=FULL/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-928.257912
Energy at 298.15K 
HF Energy-928.053650
Nuclear repulsion energy292.418120
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/6-31G(2df,p)
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' 2268 2268 0.00 533.71 0.00 0.00
2 A' 2253 2253 0.01 64.51 0.68 0.81
3 A' 1047 1047 0.00 4.74 0.75 0.86
4 A' 985 985 0.00 9.96 0.75 0.86
5 A' 663 663 0.00 1.01 0.06 0.11
6 A' 491 491 0.00 15.20 0.06 0.11
7 A" 2256 2256 363.73 0.00 0.75 0.86
8 A" 968 968 176.52 0.00 0.75 0.86
9 A" 750 750 103.02 0.00 0.75 0.86
10 A" 181 181 0.46 0.00 0.75 0.86
11 A" 101 101 0.20 0.00 0.75 0.86
12 E' 2264 2264 242.64 50.75 0.75 0.86
12 E' 2264 2264 242.71 50.75 0.75 0.86
13 E' 2253 2253 45.97 1.28 0.75 0.86
13 E' 2253 2253 45.94 1.27 0.75 0.86
14 E' 1024 1024 72.48 2.79 0.75 0.86
14 E' 1024 1024 72.47 2.79 0.75 0.86
15 E' 995 995 211.92 4.58 0.75 0.86
15 E' 995 995 211.98 4.58 0.75 0.86
16 E' 964 964 564.49 9.59 0.75 0.86
16 E' 964 964 564.64 9.59 0.75 0.86
17 E' 702 702 1.25 9.60 0.75 0.86
17 E' 702 702 1.25 9.60 0.75 0.86
18 E' 177 177 0.50 0.10 0.75 0.86
18 E' 177 177 0.50 0.10 0.75 0.86
19 E" 2253 2253 0.00 85.76 0.75 0.86
19 E" 2253 2253 0.00 85.76 0.75 0.86
20 E" 965 965 0.00 14.85 0.75 0.86
20 E" 965 965 0.00 14.85 0.75 0.86
21 E" 699 699 0.00 8.98 0.75 0.86
21 E" 699 699 0.00 8.98 0.75 0.86
22 E" 81 81 0.00 0.30 0.75 0.86
22 E" 81 81 0.00 0.30 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18355.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18355.9 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/6-31G(2df,p)
ABC
0.10359 0.10359 0.05471

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G(2df,p)

Point Group is C3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.000
Si2 0.000 1.738 0.000
Si3 -1.505 -0.869 0.000
Si4 1.505 -0.869 0.000
H5 -1.413 2.180 0.000
H6 -1.181 -2.313 0.000
H7 2.594 0.133 0.000
H8 0.678 2.283 1.197
H9 0.678 2.283 -1.197
H10 -2.316 -0.554 1.197
H11 -2.316 -0.554 -1.197
H12 1.638 -1.729 1.197
H13 1.638 -1.729 -1.197

Atom - Atom Distances (Å)
  N1 Si2 Si3 Si4 H5 H6 H7 H8 H9 H10 H11 H12 H13
N11.73771.73771.73772.59762.59762.59762.66532.66532.66532.66532.66532.6653
Si21.73773.00983.00981.48024.21983.05011.47971.47973.47113.47114.01654.0165
Si31.73773.00983.00983.05011.48024.21984.01654.01651.47971.47973.47113.4711
Si41.73773.00983.00984.21983.05011.48023.47113.47114.01654.01651.47971.4797
H52.59761.48023.05014.21984.49924.49922.41142.41143.11813.11815.10065.1006
H62.59764.21981.48023.05014.49924.49925.10065.10062.41142.41143.11813.1181
H72.59763.05014.21981.48024.49924.49923.11813.11815.10065.10062.41142.4114
H82.66531.47974.01653.47112.41145.10063.11812.39354.12494.76904.12494.7690
H92.66531.47974.01653.47112.41145.10063.11812.39354.76904.12494.76904.1249
H102.66533.47111.47974.01653.11812.41145.10064.12494.76902.39354.12494.7690
H112.66533.47111.47974.01653.11812.41145.10064.76904.12492.39354.76904.1249
H122.66534.01653.47111.47975.10063.11812.41144.12494.76904.12494.76902.3935
H132.66534.01653.47111.47975.10063.11812.41144.76904.12494.76904.12492.3935

picture of trisilylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 Si2 H5 107.380 N1 Si2 H8 111.617
N1 Si2 H9 111.617 N1 Si3 H6 107.380
N1 Si3 H10 111.617 N1 Si3 H11 111.617
N1 Si4 H7 107.380 N1 Si4 H12 111.618
N1 Si4 H13 111.618 Si2 N1 Si3 120.000
Si2 N1 Si4 120.000 Si3 N1 Si4 120.000
H5 Si2 H8 109.114 H5 Si2 H9 109.114
H6 Si3 H10 109.114 H6 Si3 H11 109.114
H7 Si4 H12 109.114 H7 Si4 H13 109.114
H8 Si2 H9 107.954 H10 Si3 H11 107.954
H12 Si4 H13 107.954
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability