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 CH2BH (methyleneborane)

using model chemistry: mPW1PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-64.664544
Energy at 298.15K-64.665716
HF Energy-64.664544
Nuclear repulsion energy23.941626
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 mPW1PW91/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3182 3038 13.10      
2 A1 2850 2721 15.17      
3 A1 1524 1455 49.62      
4 A1 1276 1218 7.69      
5 B1 740 706 65.03      
6 B1 645 615 7.60      
7 B2 3252 3105 2.17      
8 B2 916 875 42.80      
9 B2 387 369 2.66      

Unscaled Zero Point Vibrational Energy (zpe) 7385.0 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 7050.5 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 mPW1PW91/6-31G(2df,p)
ABC
10.01225 0.95840 0.87468

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.590
B2 0.000 0.000 -0.786
H3 0.000 0.914 1.176
H4 0.000 -0.914 1.176
H5 0.000 0.000 -1.961

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5
C11.37621.08541.08542.5508
B21.37622.16422.16421.1746
H31.08542.16421.82793.2668
H41.08542.16421.82793.2668
H52.55081.17463.26683.2668

picture of methyleneborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H5 180.000 B2 C1 H3 122.645
B2 C1 H4 122.645 H4 C1 H3 114.710
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.409      
2 B 0.022      
3 H 0.163      
4 H 0.163      
5 H 0.061      


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 -0.455 0.455
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.253 0.000 0.000
y 0.000 -11.246 0.000
z 0.000 0.000 -11.069
Traceless
 xyz
x -4.095 0.000 0.000
y 0.000 1.914 0.000
z 0.000 0.000 2.181
Polar
3z2-r24.361
x2-y2-4.006
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.339 0.000 0.000
y 0.000 2.777 0.000
z 0.000 0.000 5.100


<r2> (average value of r2) Å2
<r2> 21.280
(<r2>)1/2 4.613