Roman Boca – författare

Magnetochemistry is a highly interdisciplinary field that attracts the interest of chemists, physicists and material scientists. Although the general strategy of theoretical molecular magnetism has been in place for decades, its performance for extended systems of interacting magnetic units can be very complicated. Professor Boca''s book treats the "mosaic" of the theoretical approaches currently used in the field. This book presents a review of the theoretical concepts of molecular magnetism. The first chapter of the book recapitulates the necessary mathematical background. An overview of macroscopic magnetic properties is then presented. Formulation of magnetic parameters and methods of their calculation are given, followed by a brief summary of magnetic behaviour. The core of the book deals with the temperature dependence of magnetic susceptibility for mononuclear complexes, dimers, and exchange-coupled clusters.This book will be particularly useful for those scientists and students working in the field of molecular magnetism who need to refer to a complete and systematic treatment of the mathematics of magneto-chemical theory.

Magnetochemistry is concerned with the study of magnetic properties in materials. It investigates the relationship between the magnetic properties of chemical compounds and their atomic and molecular structure. This rapidly growing field has a number of applications, and the measuring and interpreting of magnetic properties is often conducted by scientists who are not specialists in the field. Magnetochemistry requires complex mathematics and physics and so can be daunting for those who have not previously studied it in depth. Aimed at providing a single source of information on magnetochemistry, this book offers a comprehensive and contemporary review of the mathematical background and formula for predicting or fitting magnetic data, including a summary of the theory behind magnetochemistry to help understand the necessary calculations. Along with tables listing the key formula, there is also a model of the magnetic functions showing the effect of individual magnetic parameters. The clear structure and comprehensive coverage of all aspects of magnetochemistry will make this an essential book for advanced students and practitioners.- Provides comprehensive overview of the mathematical background of magnetochemistry- Uses clear and accessible language so scientists in a variety of fields can utilize the information- Detailed explanations of equations and formula

Magnetochemistry is concerned with the study of magnetic properties in materials. It investigates the relationship between the magnetic properties of chemical compounds and their atomic and molecular structure. This rapidly growing field has a number of applications, and the measuring and interpreting of magnetic properties is often conducted by scientists who are not specialists in the field. Magnetochemistry requires complex mathematics and physics and so can be daunting for those who have not previously studied it in depth. Aimed at providing a single source of information on magnetochemistry, this book offers a comprehensive and contemporary review of the mathematical background and formula for predicting or fitting magnetic data, including a summary of the theory behind magnetochemistry to help understand the necessary calculations. Along with tables listing the key formula, there is also a model of the magnetic functions showing the effect of individual magnetic parameters. The clear structure and comprehensive coverage of all aspects of magnetochemistry will make this an essential book for advanced students and practitioners.

Provides comprehensive overview of the mathematical background of magnetochemistry Uses clear and accessible language so scientists in a variety of fields can utilize the information Detailed explanations of equations and formula

Electronic Energy Levels of Transition Metal Complexes guides the reader to understand how to comprehensively calculate (predict, reconstruct) electronic energy levels of separation between 0,1 to 30,000 cm-1 in d1 to d9 transition metal complexes. The applied apparatus helps to understand the individual effect of the interelectron repulsion, crystal field strength, spin-orbit coupling and the magnetic field for any symmetry. Symmetry labels can be attached to energy levels (eigenvalues) by analyzing the eigenvectors of the model Hamiltonian either at the level of crystal-field terms or crystal-field multiplets.This book includes basic formulae for matrix elements of the model Hamiltonian and a huge number of results presented as graphs identifying the order of the energy levels and their labelling using the group (double group) irreducible representations. Utilization of the generated energy levels in electron spectroscopy, electron spin resonance and magnetochemistry is presented. Massive modelling was done using the desktop computers.Covers advanced methodology for general cases, electronic terms and spin-orbit multiplets in the crystal field of any symmetry, and extensive modellingAnalyzes extensive modeling of energy levels and magnetic functions fo complexes of lower symmetryPresents energy level diagrams and magnetic functions are presented for the most important cases, such as the octahedron, elongated tetragonal pyramid, compressed tetragonal pyramid, tetrahedron, prolate bisphenoid, flattened bisphenoid, trigonal bipyramid, tetragonal bipyramid, and o-rhombic bypyramid for d1 to d9 systems

Electronic Energy Levels of Transition Metal Complexes guides the reader to understand how to comprehensively calculate (predict, reconstruct) electronic energy levels of separation between 0,1 to 30,000 cm-1 in d1 to d9 transition metal complexes. The applied apparatus helps to understand the individual effect of the interelectron repulsion, crystal field strength, spin-orbit coupling and the magnetic field for any symmetry. Symmetry labels can be attached to energy levels (eigenvalues) by analyzing the eigenvectors of the model Hamiltonian either at the level of crystal-field terms or crystal-field multiplets.This book includes basic formulae for matrix elements of the model Hamiltonian and a huge number of results presented as graphs identifying the order of the energy levels and their labelling using the group (double group) irreducible representations. Utilization of the generated energy levels in electron spectroscopy, electron spin resonance and magnetochemistry is presented. Massive modelling was done using the desktop computers.- Covers advanced methodology for general cases, electronic terms and spin-orbit multiplets in the crystal field of any symmetry, and extensive modelling- Analyzes extensive modeling of energy levels and magnetic functions fo complexes of lower symmetry- Presents energy level diagrams and magnetic functions are presented for the most important cases, such as the octahedron, elongated tetragonal pyramid, compressed tetragonal pyramid, tetrahedron, prolate bisphenoid, flattened bisphenoid, trigonal bipyramid, tetragonal bipyramid, and o-rhombic bypyramid for d1 to d9 systems

Advanced Molecular Magnetism provides a rigorous overview of the magnetic properties of molecular and extended inorganic systems. Sections cover the fundamentals of magnetic data recording and analysis, establishing exchange interactions as a foundational concept, including discussions on exchange interactions involving both d- and f-block elements, the role of magnetic anisotropy, single-molecule magnets, and spin crossover phenomena. Content emphasizes the correlation of magnetic property analysis with complementary techniques such as UV-Vis and electron paramagnetic resonance (EPR) spectroscopy. In addition, the book provides a thorough overview of electronic energy levels in transition metal complexes is provided, covering electronic terms, multiplets, and Zeeman splitting.The interface between quantum mechanics and macroscopic thermodynamic properties is explored through statistical thermodynamics, and the book reviews the major types of magnetic materials-diamagnetic, paramagnetic, ferromagnetic, and antiferromagnetic-with a focus on their underlying principles and real-world examples. Methods for deriving magnetochemical formulae for Curie paramagnets, zero-field splitting systems, T- and E-term systems, and pure multiplet systems are clearly presented, alongside practical guidance for magnetic data collection and analysis. Special attention is given to the magnetism of f-elements and the unique properties of single-molecule magnets, as well as to the correct description of many-electron states in both free atoms and those influenced by crystal fields.Outlines the theory and core principles of molecular magnetism using rigorous languageProvides an authoritative overview of the field with up-to-date knowledge and structural language from a highly regarded researcherIncludes formulas ready for computational programmingOffers practical suggestions for magnetic data collection and analysis, laying the groundwork for effective experimentation

Advanced Molecular Magnetism provides a rigorous overview of the magnetic properties of molecular and extended inorganic systems. Sections cover the fundamentals of magnetic data recording and analysis, establishing exchange interactions as a foundational concept, including discussions on exchange interactions involving both d- and f-block elements, the role of magnetic anisotropy, single-molecule magnets, and spin crossover phenomena. Content emphasizes the correlation of magnetic property analysis with complementary techniques such as UV-Vis and electron paramagnetic resonance (EPR) spectroscopy. In addition, the book provides a thorough overview of electronic energy levels in transition metal complexes is provided, covering electronic terms, multiplets, and Zeeman splitting.The interface between quantum mechanics and macroscopic thermodynamic properties is explored through statistical thermodynamics, and the book reviews the major types of magnetic materials-diamagnetic, paramagnetic, ferromagnetic, and antiferromagnetic-with a focus on their underlying principles and real-world examples. Methods for deriving magnetochemical formulae for Curie paramagnets, zero-field splitting systems, T- and E-term systems, and pure multiplet systems are clearly presented, alongside practical guidance for magnetic data collection and analysis. Special attention is given to the magnetism of f-elements and the unique properties of single-molecule magnets, as well as to the correct description of many-electron states in both free atoms and those influenced by crystal fields. - Outlines the theory and core principles of molecular magnetism using rigorous language- Provides an authoritative overview of the field with up-to-date knowledge and structural language from a highly regarded researcher- Includes formulas ready for computational programming- Offers practical suggestions for magnetic data collection and analysis, laying the groundwork for effective experimentation