WebMO Premium vs ODYSSEY Polar Bonds- Molecules Kullanım & İstatistikleri

WebMO Premium is equivalent in functionality to the free 'WebMO' app in conjunction with the 'WebMO Premium' in-app purchase. This paid version is provided for convienence for volume purchases. WebMO allows users to build and view molecules in 3-D, visualize orbitals and symmetry elements, lookup chemical information and properties from external databases, and access state-of-the-art computational chemistry programs. WebMO is recommended for students and faculty in high school, college, and graduate school who desire mobile access to molecular structures, information, and calculations. WebMO capabilities include: - Build molecules by drawing atoms and bonds in a 3-D molecular editor, or by speaking the name (e.g., “aspirin”) - Optimize structures using VSEPR theory or molecular mechanics - View Huckel molecular orbitals, electron density, and electrostatic potential - View molecular vibrations - View point group and symmetry elements of molecules - Lookup basic molecular information, including IUPAC and common names, stoichiometry, molar mass - Lookup chemical data from PubChem and ChemSpider - Lookup experimental and predicted molecular properties from external databases (NIST, Sigma-Aldrich) - Lookup IR, UV-VIS, NMR, and mass spectra from external databases (NIST, SDBS) - Capture high-resolution molecular images - Save and recall molecular structures locally - Export and import structures via email WebMO is also a front-end to WebMO servers (version 14 and higher): - Supports Gaussian, GAMESS, Molpro, MOPAC, NWChem, ORCA, PQS, PSI, Quantum Espresso, VASP, Q-Chem, and Tinker computational chemistry programs - Submit, monitor, and view calculations - View formatted tabular data extracted from output files, as well as raw output - Visualize geometry, partial charges, dipole moment, normal vibrational modes, molecular orbitals, and NMR/IR/UV-VIS spectra

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ODYSSEY Polar Bonds- Molecules

How do electronegativity differences affect the type of bonding in chemical compounds? Why do some (but not all) molecules have dipole moments? If a molecule has polar bonds, does that mean it is a polar molecule? ODYSSEY Polar Bonds and Molecules takes an entirely visual approach to distinguishing between nonpolar, polar covalent, and ionic compounds. Quantum chemical calculations are employed to present electron density distributions for more than thirty systems. The distributions are also available as color-coded polarity maps (electrostatic potential maps). Pioneered by Wavefunction’s Spartan software and utilized in countless textbook illustrations, such maps provide an immediate and intuitive feel for the polarity and reactivity of compounds. Using simple gestures, all models can be inspected at any orientation and zoom level. Different styles are available for the display of both molecules and electronic distributions. Bond distances and bond angles can be measured, the molecular dipole arrow can be shown, and a display of atomic charge labels can be requested. A glossary, comments section, and set of multiple-choice questions (with randomized options) are also available. ODYSSEY Polar Bonds and Molecules helps in becoming familiar with the dichotomy of covalent and ionic bonding that is central to chemistry. The app also offers concrete examples to show how polar bonds in a molecule may (or may not) give rise to a compound that is polar.