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/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 B1B95/STO-3G
 hartrees
Energy at 0K-65.107407
Energy at 298.15K-65.111313
HF Energy-65.107407
Nuclear repulsion energy31.879569
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/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' 3459 3054 4.07      
2 A' 3311 2923 11.61      
3 A' 2986 2636 14.67      
4 A' 1683 1486 1.36      
5 A' 1531 1352 46.05      
6 A' 1427 1260 37.29      
7 A' 1190 1050 109.09      
8 A' 1068 943 15.38      
9 A' 705 622 0.44      
10 A" 3524 3111 0.04      
11 A" 3125 2759 17.32      
12 A" 1656 1462 4.04      
13 A" 1193 1053 24.54      
14 A" 777 686 0.07      
15 A" 121 106 2.72      

Unscaled Zero Point Vibrational Energy (zpe) 13877.2 cm-1
Scaled (by 0.883) Zero Point Vibrational Energy (zpe) 12253.6 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/STO-3G
ABC
3.23710 0.71836 0.65880

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.013 -0.682 0.000
B2 -0.013 0.876 0.000
H3 1.047 -0.992 0.000
H4 -0.464 -1.125 0.895
H5 -0.464 -1.125 -0.895
H6 0.011 1.477 -1.009
H7 0.011 1.477 1.009

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.55831.10441.09561.09562.38332.3833
B21.55832.14762.23792.23791.17441.1744
H31.10442.14761.76151.76152.86112.8611
H41.09562.23791.76151.78953.25862.6472
H51.09562.23791.76151.78952.64723.2586
H62.38331.17442.86113.25862.64722.0175
H72.38331.17442.86112.64723.25862.0175

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.774 C1 B2 H7 120.774
B2 C1 H3 106.268 B2 C1 H4 113.833
B2 C1 H5 113.833 H3 C1 H4 106.395
H3 C1 H5 106.395 H4 C1 H5 109.514
H6 B2 H7 118.400
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.342      
2 B 0.189      
3 H 0.092      
4 H 0.081      
5 H 0.081      
6 H -0.050      
7 H -0.050      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.129 -0.550 0.000 0.565
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.375 -0.174 0.000
y -0.174 -14.700 0.000
z 0.000 0.000 -14.237
Traceless
 xyz
x 2.094 -0.174 0.000
y -0.174 -1.394 0.000
z 0.000 0.000 -0.700
Polar
3z2-r2-1.399
x2-y22.325
xy-0.174
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.389 -0.040 0.000
y -0.040 2.028 0.000
z 0.000 0.000 1.695


<r2> (average value of r2) Å2
<r2> 28.274
(<r2>)1/2 5.317