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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: B3LYP/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/STO-3G
 hartrees
Energy at 0K-65.161310
Energy at 298.15K-65.165195
HF Energy-65.161310
Nuclear repulsion energy31.760708
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 B3LYP/STO-3G
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' 3416 3048 3.25      
2 A' 3273 2920 8.53      
3 A' 2970 2651 14.75      
4 A' 1683 1502 1.41      
5 A' 1531 1366 38.51      
6 A' 1425 1272 40.52      
7 A' 1193 1065 106.94      
8 A' 1053 940 13.83      
9 A' 715 638 0.32      
10 A" 3478 3104 0.49      
11 A" 3107 2773 17.56      
12 A" 1657 1479 3.61      
13 A" 1192 1063 23.39      
14 A" 778 695 0.13      
15 A" 105 94 2.38      

Unscaled Zero Point Vibrational Energy (zpe) 13788.4 cm-1
Scaled (by 0.8924) Zero Point Vibrational Energy (zpe) 12304.8 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 B3LYP/STO-3G
ABC
3.22178 0.71159 0.65308

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.012 -0.685 0.000
B2 -0.012 0.881 0.000
H3 1.050 -1.000 0.000
H4 -0.468 -1.129 0.897
H5 -0.468 -1.129 -0.897
H6 0.010 1.482 -1.010
H7 0.010 1.482 1.010

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.56641.10801.09921.09922.39112.3911
B21.56642.16062.24732.24731.17541.1754
H31.10802.16061.76761.76762.87442.8744
H41.09922.24731.76761.79383.26802.6564
H51.09922.24731.76761.79382.65643.2680
H62.39111.17542.87443.26802.65642.0199
H72.39111.17542.87442.65643.26802.0199

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.744 C1 B2 H7 120.744
B2 C1 H3 106.516 B2 C1 H4 113.782
B2 C1 H5 113.782 H3 C1 H4 106.413
H3 C1 H5 106.413 H4 C1 H5 109.360
H6 B2 H7 118.464
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.331      
2 B 0.195      
3 H 0.087      
4 H 0.077      
5 H 0.077      
6 H -0.052      
7 H -0.052      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.120 -0.518 0.000 0.531
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.392 -0.166 0.000
y -0.166 -14.735 0.000
z 0.000 0.000 -14.276
Traceless
 xyz
x 2.114 -0.166 0.000
y -0.166 -1.401 0.000
z 0.000 0.000 -0.713
Polar
3z2-r2-1.426
x2-y22.344
xy-0.166
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.399 -0.037 0.000
y -0.037 2.038 0.000
z 0.000 0.000 1.706


<r2> (average value of r2) Å2
<r2> 28.451
(<r2>)1/2 5.334