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- What are the types of bond orders? - Matter Modeling Stack Exchange
For a fixed bond length and spin multiplet (e g , triplet spin state at 200 pm bond length), the SZ=S and SZ=0 molecules are almost energy degenerate (except for a tiny spin-orbit coupling energy), have nearly identical electron density distributions, and therefore should have similar computed bond orders
- Scanning two bond lengths G-16 - Matter Modeling Stack Exchange
For example, consider the case where you are scanning the bond lengths of C-Cl and C-H in chloromethane The code will first increment the bond length of C-Cl, and will then scan the C-H bond while keeping C-Cl bond constant This will result in a 2D scan, with one axis corresponding to C-Cl bond and other corresponding to C-H bond
- How may I estimate the bond energy of a molecule?
Can I estimate the bond energy by running a single Gaussian calculation of the fragments at very long separation (say, 40 angstroms)? Or do I have to calculate each fragment without the other? quantum-chemistry
- Lost atoms in LAMMPS - Matter Modeling Stack Exchange
#Create a simulation box units real dimension 3 atom_style full bond_style hybrid morse harmonic angle_style harmonic dihedral_style charmm improper_style umbrella special_bonds dreiding pair_style hybrid overlay lj cut coul long 12 0 hbond dreiding lj 4 6 6 5 90 kspace_style pppm 1 0e-4 dielectric 1 0 boundary p p p region awmix block -50 58
- molecular modeling - Bond length from infrared spectra? - Matter . . .
$\begingroup$ You can get some estimates on bond strengths (in simple cases), which might be useful for ordering bond orders strengths (the "classical" literature on metal-carbonyl complexes has used that extensively) This does not, however, assign a bond length, but might be used to estimate it from other known compounds based on the bond
- Maximum bond length in Vesta - Matter Modeling Stack Exchange
Bond length is calculated by using atomic positions and lattice parameters Ionic or covalent size do not matter, the distance will be always the same because it is between the centers of the atoms, not between their surfaces To determine the coordination number, you must look at your structure and play with it
- Simulating breaking bonds in molecular dynamics
The sigma, pi and double pi bonds contribute increasingly to the overall bond order (max individual bond order is 1) as the atoms get closer together For simplicity I am leaving out the corrections made to the overall bond order necessitated by overcoordination The bond stretching potential takes the form of a modified Morse potential
- visualization software - Which is the best way to display bonds . . .
$\begingroup$ Yes, all of these programs use some semiempirical rules to determine whether there is a bond between the atoms or not Jmol and Chimera link all atoms; Vesta, Ovito and VMD appear to link none It's all a matter of how you define a bond - which is a highly nontrivial question in general $\endgroup$ –
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