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

using model chemistry: BLYP/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 BLYP/cc-pVDZ
 hartrees
Energy at 0K-928.600990
Energy at 298.15K 
HF Energy-928.600990
Nuclear repulsion energy284.671426
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 BLYP/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' 2138 2142 0.00 462.54 0.02 0.04
2 A' 2132 2135 0.00 321.55 0.10 0.18
3 A' 989 990 0.00 12.97 0.72 0.84
4 A' 930 931 0.00 11.03 0.75 0.85
5 A' 628 629 0.00 0.86 0.13 0.23
6 A' 452 452 0.00 21.16 0.08 0.14
7 A" 2128 2132 370.67 0.00 0.75 0.86
8 A" 911 912 146.51 0.00 0.75 0.86
9 A" 693 694 87.86 0.00 0.75 0.86
10 A" 161 162 0.99 0.00 0.75 0.86
11 A" 50 50 0.06 0.00 0.75 0.86
12 E' 2145 2148 191.82 74.38 0.75 0.86
12 E' 2145 2148 191.85 74.38 0.75 0.86
13 E' 2120 2123 101.42 8.37 0.75 0.86
13 E' 2120 2123 101.42 8.37 0.75 0.86
14 E' 951 953 30.49 5.60 0.75 0.86
14 E' 951 953 30.50 5.60 0.75 0.86
15 E' 932 933 108.17 11.83 0.75 0.86
15 E' 932 933 108.18 11.82 0.75 0.86
16 E' 905 907 625.37 16.76 0.75 0.86
16 E' 905 907 625.40 16.75 0.75 0.86
17 E' 655 656 6.70 14.28 0.75 0.86
17 E' 655 656 6.70 14.28 0.75 0.86
18 E' 175 176 0.58 0.17 0.75 0.86
18 E' 175 176 0.58 0.17 0.75 0.86
19 E" 2126 2129 0.00 137.54 0.75 0.86
19 E" 2126 2129 0.00 137.53 0.75 0.86
20 E" 908 910 0.00 26.14 0.75 0.86
20 E" 908 910 0.00 26.14 0.75 0.86
21 E" 665 666 0.00 16.22 0.75 0.86
21 E" 665 666 0.00 16.22 0.75 0.86
22 E" 65 65 0.00 0.51 0.75 0.86
22 E" 65 65 0.00 0.51 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17252.1 cm-1
Scaled (by 1.0016) Zero Point Vibrational Energy (zpe) 17279.7 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 BLYP/cc-pVDZ
ABC
0.09793 0.09793 0.05167

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/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 1.790 0.000
Si3 -1.550 -0.895 0.000
Si4 1.550 -0.895 0.000
H5 -1.438 2.235 0.000
H6 -1.217 -2.363 0.000
H7 2.654 0.128 0.000
H8 0.689 2.343 1.220
H9 0.689 2.343 -1.220
H10 -2.374 -0.575 1.220
H11 -2.374 -0.575 -1.220
H12 1.684 -1.768 1.220
H13 1.684 -1.768 -1.220

Atom - Atom Distances (Å)
  N1 Si2 Si3 Si4 H5 H6 H7 H8 H9 H10 H11 H12 H13
N11.78971.78971.78972.65762.65762.65762.73002.73002.73002.73002.73002.7300
Si21.78973.09993.09991.50524.32703.13191.50651.50653.56553.56554.12144.1214
Si31.78973.09993.09993.13191.50524.32704.12144.12141.50651.50653.56553.5655
Si41.78973.09993.09994.32703.13191.50523.56553.56554.12144.12141.50651.5065
H52.65761.50523.13194.32704.60304.60302.45452.45453.20283.20285.22155.2215
H62.65764.32701.50523.13194.60304.60305.22155.22152.45452.45453.20283.2028
H72.65763.13194.32701.50524.60304.60303.20283.20285.22155.22152.45452.4545
H82.73001.50654.12143.56552.45455.22153.20282.44024.23014.88344.23014.8834
H92.73001.50654.12143.56552.45455.22153.20282.44024.88344.23014.88344.2301
H102.73003.56551.50654.12143.20282.45455.22154.23014.88342.44024.23014.8834
H112.73003.56551.50654.12143.20282.45455.22154.88344.23012.44024.88344.2301
H122.73004.12143.56551.50655.22153.20282.45454.23014.88344.23014.88342.4402
H132.73004.12143.56551.50655.22153.20282.45454.88344.23014.88344.23012.4402

picture of trisilylamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 Si2 H5 107.206 N1 Si2 H8 111.544
N1 Si2 H9 111.544 N1 Si3 H6 107.206
N1 Si3 H10 111.544 N1 Si3 H11 111.544
N1 Si4 H7 107.206 N1 Si4 H12 111.544
N1 Si4 H13 111.544 Si2 N1 Si3 120.000
Si2 N1 Si4 120.000 Si3 N1 Si4 120.000
H5 Si2 H8 109.170 H5 Si2 H9 109.170
H6 Si3 H10 109.170 H6 Si3 H11 109.170
H7 Si4 H12 109.170 H7 Si4 H13 109.170
H8 Si2 H9 108.164 H10 Si3 H11 108.164
H12 Si4 H13 108.164
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.482      
2 Si 0.359      
3 Si 0.359      
4 Si 0.359      
5 H -0.066      
6 H -0.066      
7 H -0.066      
8 H -0.066      
9 H -0.066      
10 H -0.066      
11 H -0.066      
12 H -0.066      
13 H -0.066      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -51.346 0.000 0.000
y 0.000 -51.346 0.000
z 0.000 0.000 -52.605
Traceless
 xyz
x 0.629 0.000 0.000
y 0.000 0.629 0.000
z 0.000 0.000 -1.259
Polar
3z2-r2-2.517
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 13.121 0.000 0.000
y 0.000 13.121 0.000
z 0.000 0.000 10.716


<r2> (average value of r2) Å2
<r2> 232.771
(<r2>)1/2 15.257