A182565 Decimal expansion of Madelung constant (negated) for cuprous oxide Cu_2O.
4, 4, 4, 2, 4, 7, 5, 2, 0, 9, 8, 3, 8, 9, 5, 5, 4, 8, 7, 1, 4, 0, 9, 2, 2, 6, 8, 0, 7, 3, 6, 0, 0, 2, 3, 8, 1, 2, 5, 6, 8, 7, 5, 4, 4, 9, 5, 5, 9, 9, 8, 6, 2, 7, 9, 3, 8, 6, 1, 1, 7, 4, 2, 8, 2, 4, 4, 3, 0, 9, 5, 6, 1, 2, 5, 7, 9, 4, 9, 8, 9, 4, 7, 1, 8, 0, 6, 2, 5, 2, 6, 2, 2, 5, 9, 4, 1, 9, 8, 6, 8, 7, 0, 3, 4
Offset: 1
Examples
-4.4424752098389...
Links
- Leslie Glasser, Solid-State Energetics and Electrostatics: Madelung Constants and Madelung Energies, Inorg. Chem., 2012, 51 (4), 2420-2424.
- Yosio Sakamoto, Madelung Constants of Simple Crystals Expressed in Terms of Born's Basic Potentials of 15 Figure, The Journal of Chemical Physics 28, 164 (1958). See Table III, row C3, column M_r.
- Wikipedia, Copper(I) oxide.
Formula
Equals (sqrt(3)/4) * (2 * A085469 + 3 * (A185577 + A185578)). [Sakamoto] - Andrey Zabolotskiy, Oct 12 2023
Extensions
More terms using the formula added by Andrey Zabolotskiy, Oct 12 2023