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All results from a given calculation for CH3BH2 (methylborane)

using model chemistry: QCISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-65.678226
Energy at 298.15K-65.682144
HF Energy-65.441207
Nuclear repulsion energy31.658153
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 QCISD/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3110 2962 15.62      
2 A' 3016 2873 3.74      
3 A' 2616 2491 96.56      
4 A' 1531 1458 2.71      
5 A' 1395 1328 55.60      
6 A' 1285 1224 30.59      
7 A' 1114 1061 69.02      
8 A' 985 938 10.34      
9 A' 603 574 0.32      
10 A" 3156 3005 19.71      
11 A" 2688 2560 146.55      
12 A" 1499 1428 4.09      
13 A" 1097 1045 19.96      
14 A" 703 670 0.83      
15 A" 125 119 1.34      

Unscaled Zero Point Vibrational Energy (zpe) 12461.7 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 11867.2 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 QCISD/6-31G*
ABC
3.18496 0.70950 0.64903

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.015 -0.688 0.000
B2 -0.015 0.878 0.000
H3 1.051 -0.983 0.000
H4 -0.458 -1.137 0.897
H5 -0.458 -1.137 -0.897
H6 0.016 1.497 -1.029
H7 0.016 1.497 1.029

Atom - Atom Distances (Å)
  C1 B2 H3 H4 H5 H6 H7
C11.56591.10621.09611.09612.41552.4155
B21.56592.14512.24972.24971.20121.2012
H31.10622.14511.76151.76152.87822.8782
H41.09612.24971.76151.79313.29732.6801
H51.09612.24971.76151.79312.68013.2973
H62.41551.20122.87823.29732.68012.0575
H72.41551.20122.87822.68013.29732.0575

picture of methylborane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 B2 H6 121.040 C1 B2 H7 121.040
B2 C1 H3 105.493 B2 C1 H4 114.204
B2 C1 H5 114.204 H3 C1 H4 106.224
H3 C1 H5 106.224 H4 C1 H5 109.761
H6 B2 H7 117.835
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability