Principal component analysis of long-range 'W'coupling constants of some cyclic compounds

MG Constantino, V Lacerda Jr, GVJ da Silva… - Journal of Molecular …, 2001 - Elsevier
The long-range (4JHH) coupling constants of 28 compounds, cyclopentane and
cyclohexane derivatives, have been analyzed by means of principal component analysis …

Structure–pKa correlation via the integrated molecular transform

SP Molnar, JW King - International Journal of Quantum …, 1995 - Wiley Online Library
The integrated molecular transform (FTm) is a unitary structure index that has been
successfully used for the correlation of 2‐and 3‐dimensional structure representations with …

Looking for an unambiguous geometrical definition of organic series from 3-D molecular similarity indices

M Cotta-Ramusino, R Benigni… - Journal of chemical …, 2003 - ACS Publications
A mathematically consistent definition of series was derived by the application of Principal
Component Analysis to 3-D similarity indices (ASP Software). For two data sets of aromatic …

Empirical correlations in structural chemistry

VS Mastryukov, SH Simonsen - Advances in molecular structure …, 1996 - books.google.com
Seventy four empirical relationships including in an explicit form one or two of the structural
parameters (bond length, bond angle, torsion angle) are collected and classified. Additional …

A critical compilation of substituent constants

O Exner - Correlation Analysis in Chemistry: Recent Advances, 1978 - Springer
The practical usefulness of a correlation equation as well as its significance in theory
strongly depend on its range of validity, not only as it is defined but also as its use is …

Cluster Analysis of 13C Chemical Shift Tensor Principal Values in Polycyclic Aromatic Hydrocarbons

JC Facelli, BK Nakagawa, AM Orendt… - The Journal of …, 2001 - ACS Publications
This paper presents a hierarchical cluster analysis of the principal values of the 13C
chemical shift tensors encountered in polycyclic aromatic hydrocarbons (PAHs). Because of …

The influence of chain elongation on Karplus-type relationships: a DFT study of scalar coupling constants in polyacetylene derivatives

I Alkorta, J Elguero - Organic & biomolecular chemistry, 2003 - pubs.rsc.org
The coupling constants of a series of acetylenic derivatives have been calculated using the
finite perturbation method. In the case of dimethylated derivatives a Karplus-type …

Correlation analysis in chemistry: recent advances

N Chapman - 2012 - books.google.com
This book, Correlation Analysis in Chemistry: Recent Advances, is a sequel to our Advances
in Linear Free Energy Relationships. t The change in the title is designed to reflect more …

Molecular similarity determination of heteroaromatics using CoMFA and multivariate data analysis

T Langer - Quantitative Structure‐Activity Relationships, 1994 - Wiley Online Library
The molecular similarity concept serves as a tool for rationalizing the design of potential
bioactive molecules. This report examines a way to determine molecular similarity among …

Estimation of the total range of 1JCC couplings in heterocyclic compounds: pyridines and their N-oxides, the experimental and DFT studies

K Kamieńska-Trela, L Kania, P Bernatowicz… - … Acta Part A: Molecular …, 2000 - Elsevier
A very large set of one-bond spin–spin carbon–carbon coupling constants, 1JCC, has been
measured for 32 variously mono-and disubstituted pyridine N-oxides and for 14 substituted …