Tanabe–Sugano Diagram

picture info	Tanabe–Sugano Diagram In coordination chemistry, Tanabe–Sugano diagrams are used to predict absorptions in the ultraviolet (UV), visible and infrared (IR) electromagnetic spectrum of coordination compounds. The results from a Tanabe–Sugano diagram analysis of a metal complex can also be compared to experimental spectroscopic data. They are qualitatively useful and can be used to approximate the value of 10Dq, the ligand field splitting energy. Tanabe–Sugano diagrams can be used for both high spin and low spin complexes, unlike Orgel diagrams, which apply only to high spin complexes. Tanabe–Sugano diagrams can also be used to predict the size of the ligand field necessary to cause high-spin to low-spin transitions. In a Tanabe–Sugano diagram, the ground state is used as a constant reference, in contrast to Orgel diagrams. The energy of the ground state is taken to be zero for all field strengths, and the energies of all other terms and their components are plotted with respect to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Coordination Chemistry A coordination complex consists of a central atom or ion, which is usually metallic and is called the ''coordination centre'', and a surrounding array of bound molecules or ions, that are in turn known as ''ligands'' or complexing agents. Many metal-containing compounds, especially those that include transition metals (elements like titanium that belong to the Periodic Table's d-block), are coordination complexes. Nomenclature and terminology Coordination complexes are so pervasive that their structures and reactions are described in many ways, sometimes confusingly. The atom within a ligand that is bonded to the central metal atom or ion is called the donor atom. In a typical complex, a metal ion is bonded to several donor atoms, which can be the same or different. A polydentate (multiple bonded) ligand is a molecule or ion that bonds to the central atom through several of the ligand's atoms; ligands with 2, 3, 4 or even 6 bonds to the central atom are common. These com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Racah Parameter When an atom has more than one electron there will be some electrostatic repulsion between those electrons. The amount of repulsion varies from atom to atom, depending upon the number and spin of the electrons and the orbitals they occupy. The total repulsion can be expressed in terms of three parameters ''A'', ''B'' and ''C'' which are known as the Racah parameters after Giulio Racah, who first described them. They are generally obtained empirically from gas-phase spectroscopic studies of atoms. They are often used in transition-metal chemistry to describe the repulsion energy associated with an electronic term. For example, the interelectronic repulsion of a 3P term is ''A'' + 7''B'', and of a 3F term is ''A'' - 8''B'', and the difference between them is therefore 15''B''. Definition The Racah parameters are defined as \begin A \\ B\\ C\\ \end = \begin 1 & 0 & -49\\ 0 & 1 & -5 \\ 0 & 0 & 35 \\ \end\begin F_0 \\ F_2\\ F_4\\ \end where F_k are Slater integrals \begin F_ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Tanabe Sugano Diagram D5 Tanabe may refer to: People Chikara Tanabe, Japanese Olympic wrestler Chie Tanabe, Japanese stuntwoman * Daichi Tanabe, Japanese footballer David Tanabe (born 1980), American professional ice hockey player Harumichi Tanabe, bureaucrat and cabinet minister in early Shōwa period Japan Hi69, Tanabe Hiroki, Japanese professional wrestler Hajime Tanabe, Japanese philosopher of the Kyoto School Hisao Tanabe, Japanese musicologist Jūji Tanabe, Japanese literature scholar, teacher, and mountain climber Kensuke Tanabe, Japanese video game designer, producer and director Kazuhiko Tanabe, Japanese football player * Karin Tanabe, American historical fiction novelist * Keisuke Tanabe, Japanese footballer * Kiyoshi Tanabe, Japanese Olympic boxer Kiyoshi Tanabe (tennis), Japanese professional tennis player Luke Tanabe, Canadian fashion designer Masato Tanabe, American scientist Moritake Tanabe, Japanese general during World War II Mataemon Tanabe, Japanese martial artist Miku ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Tanabe Sugano Diagram D4 Tanabe may refer to: People Chikara Tanabe, Japanese Olympic wrestler Chie Tanabe, Japanese stuntwoman * Daichi Tanabe, Japanese footballer David Tanabe (born 1980), American professional ice hockey player Harumichi Tanabe, bureaucrat and cabinet minister in early Shōwa period Japan Hi69, Tanabe Hiroki, Japanese professional wrestler Hajime Tanabe, Japanese philosopher of the Kyoto School Hisao Tanabe, Japanese musicologist Jūji Tanabe, Japanese literature scholar, teacher, and mountain climber Kensuke Tanabe, Japanese video game designer, producer and director Kazuhiko Tanabe, Japanese football player * Karin Tanabe, American historical fiction novelist * Keisuke Tanabe, Japanese footballer * Kiyoshi Tanabe, Japanese Olympic boxer Kiyoshi Tanabe (tennis), Japanese professional tennis player Luke Tanabe, Canadian fashion designer Masato Tanabe, American scientist Moritake Tanabe, Japanese general during World War II Mataemon Tanabe, Japanese martial artist Miku ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Tanabe Sugano Diagram D3 Tanabe may refer to: People Chikara Tanabe, Japanese Olympic wrestler Chie Tanabe, Japanese stuntwoman * Daichi Tanabe, Japanese footballer David Tanabe (born 1980), American professional ice hockey player Harumichi Tanabe, bureaucrat and cabinet minister in early Shōwa period Japan Hi69, Tanabe Hiroki, Japanese professional wrestler Hajime Tanabe, Japanese philosopher of the Kyoto School Hisao Tanabe, Japanese musicologist Jūji Tanabe, Japanese literature scholar, teacher, and mountain climber Kensuke Tanabe, Japanese video game designer, producer and director Kazuhiko Tanabe, Japanese football player * Karin Tanabe, American historical fiction novelist * Keisuke Tanabe, Japanese footballer * Kiyoshi Tanabe, Japanese Olympic boxer Kiyoshi Tanabe (tennis), Japanese professional tennis player Luke Tanabe, Canadian fashion designer Masato Tanabe, American scientist Moritake Tanabe, Japanese general during World War II Mataemon Tanabe, Japanese martial artist Miku ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Tanabe Sugano Diagram D2 Tanabe may refer to: People Chikara Tanabe, Japanese Olympic wrestler Chie Tanabe, Japanese stuntwoman * Daichi Tanabe, Japanese footballer David Tanabe (born 1980), American professional ice hockey player Harumichi Tanabe, bureaucrat and cabinet minister in early Shōwa period Japan Hi69, Tanabe Hiroki, Japanese professional wrestler Hajime Tanabe, Japanese philosopher of the Kyoto School Hisao Tanabe, Japanese musicologist Jūji Tanabe, Japanese literature scholar, teacher, and mountain climber Kensuke Tanabe, Japanese video game designer, producer and director Kazuhiko Tanabe, Japanese football player * Karin Tanabe, American historical fiction novelist * Keisuke Tanabe, Japanese footballer * Kiyoshi Tanabe, Japanese Olympic boxer Kiyoshi Tanabe (tennis), Japanese professional tennis player Luke Tanabe, Canadian fashion designer Masato Tanabe, American scientist Moritake Tanabe, Japanese general during World War II Mataemon Tanabe, Japanese martial artist Miku ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Tanabe Sugano Discontinuity Tanabe may refer to: People Chikara Tanabe, Japanese Olympic wrestler Chie Tanabe, Japanese stuntwoman * Daichi Tanabe, Japanese footballer David Tanabe (born 1980), American professional ice hockey player Harumichi Tanabe, bureaucrat and cabinet minister in early Shōwa period Japan Hi69, Tanabe Hiroki, Japanese professional wrestler Hajime Tanabe, Japanese philosopher of the Kyoto School Hisao Tanabe, Japanese musicologist Jūji Tanabe, Japanese literature scholar, teacher, and mountain climber Kensuke Tanabe, Japanese video game designer, producer and director Kazuhiko Tanabe, Japanese football player * Karin Tanabe, American historical fiction novelist * Keisuke Tanabe, Japanese footballer * Kiyoshi Tanabe, Japanese Olympic boxer Kiyoshi Tanabe (tennis), Japanese professional tennis player Luke Tanabe, Canadian fashion designer Masato Tanabe, American scientist Moritake Tanabe, Japanese general during World War II Mataemon Tanabe, Japanese martial artist Miku ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Hund's Rules In atomic physics, Hund's rules refers to a set of rules that German physicist Friedrich Hund formulated around 1927, which are used to determine the term symbol that corresponds to the ground state of a multi-electron atom. The first rule is especially important in chemistry, where it is often referred to simply as Hund's Rule. The three rules are: # For a given electron configuration, the term with maximum multiplicity has the lowest energy. The multiplicity is equal to 2S + 1 \ , where S is the total spin angular momentum for all electrons. The multiplicity is also equal to the number of unpaired electrons plus one.Miessler and Tarr p.33 Therefore, the term with lowest energy is also the term with maximum S \, and maximum number of unpaired electrons. # For a given multiplicity, the term with the largest value of the total orbital angular momentum quantum number L \, has the lowest energy. # For a given term, in an atom with outermost subshell half-filled or less ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Term Symbol In quantum mechanics, the term symbol is an abbreviated description of the (total) angular momentum quantum numbers in a multi-electron atom (however, even a single electron can be described by a term symbol). Each energy level of an atom with a given electron configuration is described by not only the electron configuration but also its own term symbol, as the energy level also depends on the total angular momentum including spin. The usual atomic term symbols assume LS coupling (also known as Russell– Saunders coupling or spin-orbit coupling). The ground state term symbol is predicted by Hund's rules. The use of the word ''term'' for an energy level is based on the Rydberg–Ritz combination principle, an empirical observation that the wavenumbers of spectral lines can be expressed as the difference of two ''terms''. This was later summarized by the Bohr model, which identified the terms (multiplied by ''hc'', where ''h'' is the Planck constant and ''c'' the speed of light) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Molecular Symmetry Molecular symmetry in chemistry describes the symmetry present in molecules and the classification of these molecules according to their symmetry. Molecular symmetry is a fundamental concept in chemistry, as it can be used to predict or explain many of a molecule's chemical properties, such as whether or not it has a dipole moment, as well as its allowed spectroscopic transitions. To do this it is necessary to use group theory. This involves classifying the states of the molecule using the irreducible representations from the character table of the symmetry group of the molecule. Symmetry is useful in the study of molecular orbitals, with applications to the Hückel method, to ligand field theory, and to the Woodward-Hoffmann rules. Many university level textbooks on physical chemistry, quantum chemistry, spectroscopy and inorganic chemistry discuss symmetry. Another framework on a larger scale is the use of crystal systems to describe crystallographic symmetry in bul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	John Wiley & Sons John Wiley & Sons, Inc., commonly known as Wiley (), is an American multinational publishing company founded in 1807 that focuses on academic publishing and instructional materials. The company produces books, journals, and encyclopedias, in print and electronically, as well as online products and services, training materials, and educational materials for undergraduate, graduate, and continuing education students. History The company was established in 1807 when Charles Wiley opened a print shop in Manhattan. The company was the publisher of 19th century American literary figures like James Fenimore Cooper, Washington Irving, Herman Melville, and Edgar Allan Poe, as well as of legal, religious, and other non-fiction titles. The firm took its current name in 1865. Wiley later shifted its focus to scientific, technical, and engineering subject areas, abandoning its literary interests. Wiley's son John (born in Flatbush, New York, October 4, 1808; died in East Orang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Ligand Field Splitting Parameter A spectrochemical series is a list of ligands ordered by ligand "strength", and a list of metal ions based on oxidation number, group and element. For a metal ion, the ligands modify the difference in energy Δ between the d orbitals, called the ligand-field splitting parameter in ligand field theory, or the crystal-field splitting parameter in crystal field theory. The splitting parameter is reflected in the ion's electronic and magnetic properties such as its spin state, and optical properties such as its color and absorption spectrum. Spectrochemical series of ligands The spectrochemical series was first proposed in 1938 based on the results of absorption spectra of cobalt complexes. A partial ''spectrochemical series'' listing of ligands from small Δ to large Δ is given below. (For a table, see the ligand page.) :I− < Br− < S2− < SCN− (S–bonded) < Cl− < N3− < F−< NCO− < OH− < C2O42− < O^{[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]}