Home page for the Nebo School district located in Utah.

NBO 7.0 is the current version of the broad suite of 'natural' algorithms for optimally expressing numerical solutions of Schrödinger's wave equation in the chemically intuitive language of Lewis-like bonding patterns and associated resonance-type 'donor-acceptor' interactions.

In quantum chemistry, a natural bond orbital or NBO is a calculated bonding orbital with maximum electron density. The NBOs are one of a sequence of natural localized orbital sets that include "natural atomic orbitals" (NAO), "natural hybrid orbitals" (NHO), "natural bonding orbitals" (NBO) and "natural (semi-)localized molecular orbitals" (NLMO).

Natural Atomic Orbitals (NAOs) {Θ k(A)} are localized 1-center orbitals that can be described as the effective "natural orbitals of atom A" in the molecular environment.

The NBO website < http://nbo7.chem.wisc.edu/> provides additional tutorials, sample input and output for main program keywords, and explanatory background and bibliographic material to supplement this Manual.

The student Nebo username and password are used to login to: The following applications will automatically authenticate to the @stu.nebo.edu account when logged into a Chromebook or Google Chrome: iReady Login: How to reset or change a student password.

What Does The NBOPro Program Do? NBOPro v.6 is a suite of four separate but interacting utility programs that facilitate the analysis of modern electronic structure wavefunctions with Natural Bond Orbital (NBO) methods, all consistent with NBO 6.0 program level and output. Your general entry to NBOPro modules is through the main program screen:

underlying mathematical or programming details. “NBO analysis” should be con-sidered a strategy as well as a collection of keyword tools. Successful usage of the NBO toolkit involves intelligent visualization of the blueprint as well as mastery of individual tools to construct a sound explanatory framework. xi

Nov 15, 2012 · We sketch the basic principles of natural bond orbital (NBO) theory, including critical discussion of its relationship to alternative bonding concepts and selected illustrations of its application to a broad spectrum of chemical bonding motifs.

This page provides an introductory quick-start tutorial on running an NBO calculation and interpreting the output. The example chosen is that of methylamine (CH 3 NH 2) in Pople-Gordon idealized geometry, treated at the ab initio RHF/3-21G level.