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: PBEPBE/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 PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-65.826589
Energy at 298.15K-65.830476
HF Energy-65.826589
Nuclear repulsion energy31.673193
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 PBEPBE/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' 3023 2992 10.69      
2 A' 2915 2885 3.93      
3 A' 2526 2500 97.77      
4 A' 1427 1412 1.05      
5 A' 1274 1261 65.59      
6 A' 1205 1193 9.75      
7 A' 1053 1042 56.71      
8 A' 965 955 12.29      
9 A' 509 503 1.29      
10 A" 3078 3047 12.53      
11 A" 2600 2573 126.57      
12 A" 1377 1363 2.98      
13 A" 1025 1014 17.17      
14 A" 657 650 0.26      
15 A" 179 177 2.29      

Unscaled Zero Point Vibrational Energy (zpe) 11905.6 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 11782.9 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 PBEPBE/6-31G(2df,p)
ABC
3.16365 0.71625 0.65293

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.022 -0.683 0.000
B2 -0.022 0.873 0.000
H3 1.066 -0.929 0.000
H4 -0.428 -1.162 0.904
H5 -0.428 -1.162 -0.904
H6 0.015 1.492 -1.035
H7 0.015 1.492 1.035

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.55551.11521.10071.10072.40902.4090
B21.55552.10482.26322.26321.20681.2068
H31.11522.10481.76141.76142.83562.8356
H41.10072.26321.76141.80743.31662.6941
H51.10072.26321.76141.80742.69413.3166
H62.40901.20682.83563.31662.69412.0700
H72.40901.20682.83562.69413.31662.0700

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 120.889 C1 B2 H7 120.889
B2 C1 H3 102.774 B2 C1 H4 115.812
B2 C1 H5 115.812 H3 C1 H4 105.291
H3 C1 H5 105.291 H4 C1 H5 110.383
H6 B2 H7 118.105
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.400      
2 B -0.009      
3 H 0.156      
4 H 0.136      
5 H 0.136      
6 H -0.009      
7 H -0.009      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.146 -0.835 0.000 0.848
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.496 -0.201 0.000
y -0.201 -15.950 0.000
z 0.000 0.000 -15.219
Traceless
 xyz
x 2.089 -0.201 0.000
y -0.201 -1.593 0.000
z 0.000 0.000 -0.496
Polar
3z2-r2-0.992
x2-y22.455
xy-0.201
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.054 -0.025 0.000
y -0.025 4.501 0.000
z 0.000 0.000 3.830


<r2> (average value of r2) Å2
<r2> 29.206
(<r2>)1/2 5.404