Harmonic Force Constants for Molecular Mechanics Force Fields via Hessian Matrix Projection

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Developing accurate molecular mechanics force fields for conjugated molecular systems.

A rapid method to parameterize the intramolecular component of classical force fields for complex conjugated molecules is proposed. The method is based on a procedure of force matching with a reference electronic structure calculation. It is particularly suitable for those applications where molecular dynamics simulations are used to generate structures that are therefore analysed by electronic...

متن کامل

A molecular mechanics force field for lignin

A CHARMM molecular mechanics force field for lignin is derived. Parameterization is based on reproducing quantum mechanical data of model compounds. Partial atomic charges are derived using the RESP electrostatic potential fitting method supplemented by the examination of methoxybenzene:water interactions. Dihedral parameters are optimized by fitting to critical rotational potentials and bonded...

متن کامل

Disordered binary harmonic chains with site-dependent force constants

A hierarchical lattice model for a disordered two-component one-dimensional harmonic chain with three force constants, corresponding to the three possible pairs of nearest neighbors, is studied. Differences of as little as 20% between the various force constants can appreciably modify the density of states. These changes in the spectrum allow one to roughly characterize which type of interactio...

متن کامل

Hessian Biased Force Field for Polysilane Polymers

We report a force field (FF) suitable for molecular dynamics simulations of polysilane polymers. This FF, denoted MSXX, was developed using the Hessian biased method to describe accurately the vibrational states, the a b initio torsional potential energy surface, and the ab initio electrostatic charges of polysilane oligomers. This MSXX FF was used to calculate various spectroscopic and mechani...

متن کامل

Force fields and molecular dynamics simulations

The objective of this review is to serve as an introductory guide for the non-expert to the exciting field of Molecular Dynamics (MD). MD simulations generate a phase space trajectory by integrating the classical equations of motion for a system of N particles. Here I review the basic concepts needed to understand the technique, what are the key elements to perform a simulation and which is the...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of Chemical Theory and Computation

سال: 2017

ISSN: 1549-9618,1549-9626

DOI: 10.1021/acs.jctc.7b00785