
van der Waals radius - Wikipedia
Van der Waals radii may be determined from the mechanical properties of gases (the original method), from the critical point, from measurements of atomic spacing between pairs of unbonded atoms in crystals or from measurements of electrical or optical properties (the polarizability and the molar refractivity).
VDW Radii
Atomic VDW (van der Waals) radii are used in sphere and ball display. They are also used to identify clashes and contacts and to calculate molecular surfaces and surface areas. VDW radii are assigned automatically based on atom types (or read directly from the input file, if PQR) and can be changed with the size command.
VDW Radii
VDW (van der Waals) radii are used to show atoms in the sphere representation and, when multiplied by the ball scale factor, the ball-and-stick representation. VDW radii are also used in calculating surfaces, finding close contacts, and rendering atoms with conic and neon. VDW radii are stored as the atom attribute radius.
Revisiting van der Waals Radii: From Comprehensive Structural Analysis ...
2020年1月8日 · In this work, we introduce a new method to define the Dmax and, accordingly, to compute Dmax -based vdW radii (Rmax) for almost any intermolecular interaction directly from diverse structural datasets. The key idea is to eliminate the background from randomly distributed contacts using the Line-of-Sight 15 concept.
范德瓦尔斯计算结构要点总结 - 知乎 - 知乎专栏
范德瓦尔斯力,又被称作分子间作用力,是一种中性分子或者原子之间的相互作用力,其产生的根源依然是分子或者原子之间的静电相互作用,只不过此时发挥作用的是分子或者原子中的偶极矩。
The use and misuse of van der Waals radii | Structural Chemistry
2021年1月19日 · Unfortunately there are significant problems associated with van der Waals radii. Assigning a single non-bonded radius to an atom assumes that the non-bonded portion of that atom, when it is part of a molecule, is spherically symmetrical. This is often not the case.
Van der Waals radius - Periodic table
The atomic radius named after Johannes Diderik van der Waals is based on the calculation of an imaginary hard sphere, which is used as a model for atomic behavior.
Multicolor x-rays from free electron–driven van der Waals ... - AAAS
2023年12月1日 · Our findings take vdW x-ray sources to the next level by introducing the use of vdW heterostructures, revealing an x-ray generation modality whereby the outgoing x-ray spectrum can be fully shaped—and not just tuned (i.e., only the peak photon energy changes)—via atomic design.
VDW Radii
VDW (van der Waals) radii are used to show atoms in the sphere representation and, when multiplied by the ball scale factor, the ball-and-stick representation. VDW radii are also used in calculating surfaces and in rendering atoms with conic , neon , and ribbonjr .
Consistent van der Waals Radii for the Whole Main Group
2009年4月21日 · van der Waals radii, as tabulated by Bondi, (1) have been used for a wide range of applications. (2-10) Bondi radii result from a refinement of the work of Pauling, (11) who determined standard values of atomic radii from contact distances between nonbonded atoms in molecular crystals.