National Institute of Standards and Technology
Computational Chemistry Comparison and Benchmark DataBase
Release 19April 2018
NIST Standard Reference Database 101
IIExperimental data
IIICalculated data
IVData comparisons
VCost comparisons
VIInput and output files
VIITutorials and Units
VIIILinks to other sites
XOlder CCCBDB versions
XIII Vibrations
XIVReaction data
XVEntropy data
XVIBibliographic data
XVIIIon data
XVIIIBad calculations
XIXIndex of properties
XXH-bond dimers

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All results from a given calculation for BrNO (Nitrosyl bromide)

using model chemistry: QCISD/aug-cc-pVTZ

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/aug-cc-pVTZ
Energy at 0K-2702.407852
Energy at 298.15K 
HF Energy-2701.718970
Nuclear repulsion energy141.165999
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/aug-cc-pVTZ
Mode Number Symmetry Frequency (cm-1) Scaled Frequency (cm-1) IR Intensities (km mol-1)
1 A' 1822 1753 801.71
2 A' 579 557 92.17
3 A' 289 278 56.36

Unscaled Zero Point Vibrational Energy (zpe) 1344.6 cm-1
Scaled (by 0.9624) Zero Point Vibrational Energy (zpe) 1294.0 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/aug-cc-pVTZ
2.84387 0.12911 0.12350

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.482 -1.322 0.000
Br2 0.000 0.725 0.000
O3 -0.422 -2.014 0.000

Atom - Atom Distances (Å)

  N1 Br2 O3

picture of Nitrosyl bromide
More geometry information

Calculated Bond Angles

atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 N1 O3 114.188
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability