return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: B1B95/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/6-31G(2df,p)
 hartrees
Energy at 0K-65.892988
Energy at 298.15K-65.896932
HF Energy-65.892988
Nuclear repulsion energy31.897827
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 B1B95/6-31G(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' 3115 2984 11.11      
2 A' 3004 2877 3.89      
3 A' 2590 2481 105.68      
4 A' 1475 1413 1.23      
5 A' 1322 1267 69.67      
6 A' 1250 1197 13.24      
7 A' 1081 1036 66.19      
8 A' 984 943 13.21      
9 A' 529 506 1.09      
10 A" 3171 3037 12.90      
11 A" 2664 2551 141.01      
12 A" 1427 1366 3.09      
13 A" 1058 1013 18.92      
14 A" 675 646 0.51      
15 A" 185 177 1.75      

Unscaled Zero Point Vibrational Energy (zpe) 12265.0 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 11746.2 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 B1B95/6-31G(2df,p)
ABC
3.21772 0.72408 0.66074

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.021 -0.680 0.000
B2 -0.021 0.869 0.000
H3 1.055 -0.928 0.000
H4 -0.430 -1.149 0.895
H5 -0.430 -1.149 -0.895
H6 0.016 1.483 -1.026
H7 0.016 1.483 1.026

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.54901.10411.09021.09022.39452.3945
B21.54902.09442.24492.24491.19621.1962
H31.10412.09441.74831.74832.81902.8190
H41.09022.24491.74831.79013.28872.6727
H51.09022.24491.74831.79012.67273.2887
H62.39451.19622.81903.28872.67272.0514
H72.39451.19622.81902.67273.28872.0514

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.904 C1 B2 H7 120.904
B2 C1 H3 102.973 B2 C1 H4 115.456
B2 C1 H5 115.456 H3 C1 H4 105.643
H3 C1 H5 105.643 H4 C1 H5 110.375
H6 B2 H7 118.070
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.433      
2 B 0.064      
3 H 0.153      
4 H 0.136      
5 H 0.136      
6 H -0.028      
7 H -0.028      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.121 -0.751 0.000 0.761
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.381 -0.190 0.000
y -0.190 -15.930 0.000
z 0.000 0.000 -15.193
Traceless
 xyz
x 2.181 -0.190 0.000
y -0.190 -1.643 0.000
z 0.000 0.000 -0.538
Polar
3z2-r2-1.076
x2-y22.549
xy-0.190
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.978 -0.016 0.000
y -0.016 4.292 0.000
z 0.000 0.000 3.738


<r2> (average value of r2) Å2
<r2> 28.911
(<r2>)1/2 5.377