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Nido De Águilas
Nido may refer to: * Nido (brand), a brand of powdered milks * Nido Creek, a creek in British Columbia, Canada * Nido Formation, a geological formation in British Columbia, Canada People with the name * Alberto A. Nido (1919–1991), American Air Force officer * Miguel Nido (born 1963), Puerto Rican tennis player * Tomás Nido (born 1994), Puerto Rican baseball player * Nido Pavitra, Indian politician * Nido Qubein (born 1948), American Lebanese-Jordanian businessman and motivational speaker * Nido Taniam (1990s–2014), Indian student and murder victim Chemistry * Nido cluster, a type of deltahedral atom cluster where one vertex is missing. The descriptor ''nido''- is typically applied boranes, derivatives such as carboranes, and deltahedral metal cluster compounds such as stannides, plumbides and bismuth polycations. The term is usually used in the context of polyhedral skeletal electron pair theory or systematic nomenclature in inorganic chemistry. From the Latin fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nido (brand)
Nido is a milk substitute powder and milk powder brand manufactured by Nestlé. It was introduced in 1944 in Switzerland. The range claims to offer "nutrition solutions for each stage of childhood". Overview The different varieties include instant dried whole milk with Vitamins A & D, and Nido Kinder 1+. Nido is fortified with additional nutrients to those found in milk. Nido Kinder 1+ is non-fat powdered milk that is fortified with Prebio 1, a prebiotic fibre that benefits a child’s digestive system. Nestlé says that Nido products are not suitable for children of under 1 year of age. Although there is no age recommendation apart from the minimum age restriction of 1 year, marketing is featured around children over three years of age with the tagline "Nutritious Milk for Growing Kids". Nido Fortificada contains: whole milk, soy lecithin, vitamins A (as acetate), C, and D3, iron (as ferric pyrophosphate), and zinc sulfate. Nido Kinder 1+ contains: nonfat milk, vegetable oi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boranes
A borane is a compound with the formula although examples include multi-boron derivatives. A large family of boron hydride clusters is also known. In addition to some applications in organic chemistry, the boranes have attracted much attention as they exhibit structures and bonding that differs strongly from the patterns seen in hydrocarbons. Hybrids of boranes and hydrocarbons, the carboranes, are also a well developed class of compounds. pp 151-195 History The development of the chemistry of boranes led to innovations in synthetic methods as well as structure and bonding. First, new synthetic techniques were required to handle diborane and many of its derivatives, which are both pyrophoric and volatile. Alfred Stock invented the glass vacuum line for this purpose. The structure of diborane was correctly predicted in 1943 many years after its discovery. Interest in boranes increased during World War II due to the potential of uranium borohydride for enrichment of the uranium ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nest
A nest is a structure built for certain animals to hold Egg (biology), eggs or young. Although nests are most closely associated with birds, members of all classes of vertebrates and some invertebrates construct nests. They may be composed of organic material such as twigs, grass, and leaves, or may be a simple depression in the ground, or a hole in a rock, tree, or building. Human-made materials, such as string, plastic, cloth, or paper, may also be used. Nests can be found in all types of habitat. Nest building is driven by a biological urge known as the nesting instinct in birds and mammals. Generally each species has a distinctive style of nest. Nest complexity is roughly correlated with the level of parental care by adults. Nest building is considered a key adaptive advantage among birds, and they exhibit the most variation in their nests ranging from simple holes in the ground to elaborate communal nests hosting hundreds of individuals. Nests of prairie dogs and severa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inorganic Chemistry
Inorganic chemistry deals with chemical synthesis, synthesis and behavior of inorganic compound, inorganic and organometallic chemistry, organometallic compounds. This field covers chemical compounds that are not carbon-based, which are the subjects of organic chemistry. The distinction between the two disciplines is far from absolute, as there is much overlap in the subdiscipline of organometallic chemistry. It has applications in every aspect of the chemical industry, including catalysis, materials science, pigments, surfactants, coatings, pharmaceutical drug, medications, fuels, and agriculture. Occurrence Many inorganic compounds are found in nature as minerals. Soil may contain iron sulfide as pyrite or calcium sulfate as gypsum. Inorganic compounds are also found multitasking as biomolecules: as electrolytes (sodium chloride), in energy storage (Adenosine triphosphate, ATP) or in construction (the polyphosphate backbone in DNA). Bonding Inorganic compounds exhibit a range ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUPAC Nomenclature Of Inorganic Chemistry 2005
Nomenclature of Inorganic Chemistry, IUPAC Recommendations 2005 is the 2005 version of ''Nomenclature of Inorganic Chemistry'' (which is informally called the Red Book). It is a collection of rules for naming inorganic compounds, as recommended by the International Union of Pure and Applied Chemistry (IUPAC). Summary The 2005 edition replaces their previous recommendations ''Nomenclature The Red Book of Inorganic Chemistry, IUPAC Recommendations 1990 (Red Book I)'', and "where appropriate" (sic) ''Nomenclature of Inorganic Chemistry II, IUPAC Recommendations 2000 (Red Book II)''. The recommendations take up over 300 pages''Nomenclature of Inorganic Chemistry IUPAC Recommendations'' 2005 ed. N. G. Connelly et al. RSC Publishing https://iupac.org/what-we-do/books/redbook/ and the full text can be downloaded from IUPAC. Corrections have been issued. Apart from a reorganisation of the content, there is a new section on organometallics and a formal element list to be used in place o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyhedral Skeletal Electron Pair Theory
In chemistry the polyhedral skeletal electron pair theory (PSEPT) provides electron counting rules useful for predicting the structures of clusters such as borane and carborane clusters. The electron counting rules were originally formulated by Kenneth Wade, and were further developed by others including Michael Mingos; they are sometimes known as Wade's rules or the Wade–Mingos rules. The rules are based on a molecular orbital treatment of the bonding. These notes contained original material that served as the basis of the sections on the 4''n'', 5''n'', and 6''n'' rules. These rules have been extended and unified in the form of the Jemmis ''mno'' rules. Predicting structures of cluster compounds Different rules (4''n'', 5''n'', or 6''n'') are invoked depending on the number of electrons per vertex. The 4''n'' rules are reasonably accurate in predicting the structures of clusters having about 4 electrons per vertex, as is the case for many boranes and carboranes. For su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bismuth Polycations
Bismuth polycations are polyatomic ions of the formula . They were originally observed in solutions of bismuth metal in molten bismuth chloride. It has since been found that these clusters are present in the solid state, particularly in salts where germanium tetrachloride or tetrachloroaluminate serve as the counteranions, but also in amorphous phases such as Glass, glasses and Gel, gels. Bismuth endows materials with a variety of interesting optical properties that can be tuned by changing the supporting material. Commonly-reported structures include the Trigonal bipyramidal molecular geometry, trigonal bipyramidal cluster, the Octahedral molecular geometry, octahedral cluster, the Square antiprismatic molecular geometry, square antiprismatic cluster, and the Tricapped trigonal prismatic molecular geometry, tricapped trigonal prismatic cluster. Known materials Crystalline * Bi5(AlCl4)3 * Bi8(AlCl4)2 * Bi5(GaCl4)3 * Bi8(GaCl4)2 Metal complexes * [CuBi8][AlCl4]3 * [Ru(Bi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plumbide
Plumbide is an anion of lead atoms. There are three plumbide anions, written as Pb−, Pb2− and Pb4− with 3 oxidation states, −1, −2 and −4, respectively. A plumbide can refer to one of two things: an intermetallic compound that contains lead, or a Zintl phase compound with lead as the anion. Zintl phase Plumbides can be formed when lead forms a Zintl phase compound with a more metallic element. One salt that can be formed this way is when cryptand reacts with sodium and lead in ethylenediamine (en) to produce b5sup>2−, which is red in solution. Lead can also create anions with tin, in a series of anions with the formula n9−''x''Pb''x''sup>4−. Lead can also form the b9sup>4− anion, which is emerald green in solution. Examples An example of a plumbide is CeRhPb. The lead atom has a coordination number of 12 in the crystal structure of this compound. It is bound to four rhodiums, six ceriums, and two other lead atoms in the crystal structure of the chemica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stannide
A stannide can refer to an intermetallic compound containing tin combined with one or more other metals; an anion consisting solely of tin atoms or a compound containing such an anion, or, in the field of organometallic chemistry an ionic compound containing an organotin anion (e.g.see an alternative name for such a compound is stannanide.) Binary alkali and alkaline earth stannides When tin is combined with an alkali or alkaline earth metal some of the compounds formed have ionic structures containing monatomic or polyatomic tin anions ( Zintl ions), such as Sn4− in Mg2SnS.M. Kauzlarich,(1994), Zintl Compounds, Encyclopedia of Inorganic Chemistry, John Wiley & sons, or in K4Sn9. Even with these metals not all of the compounds formed can be considered to be ionic with localised bonding, for example Sr3Sn5, a metallic compound, contains square pyramidal units. Ternary alkali and alkaline earth stannides Ternary (where there is an alkali or alkaline earth metal, a transition ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metal Cluster Compound
Metal cluster compounds are a molecular ion or neutral compound composed of three or more metals and featuring significant metal-metal interactions. Transition metal carbonyl clusters The development of metal carbonyl clusters such as Ni(CO)4 and Fe(CO)5 led quickly to the isolation of Fe2(CO)9 and Fe3(CO)12. Rundle and Dahl discovered that Mn2(CO)10 featured an "unsupported" Mn-Mn bond, thereby verifying the ability of metals to bond to one another in molecules. In the 1970s, Paolo Chini demonstrated that very large clusters could be prepared from the platinum metals, one example being h13(CO)24H3sup>2−. This area of cluster chemistry has benefited from single-crystal X-ray diffraction. Many metal carbonyl clusters contain ligands aside from CO. For example, the CO ligand can be replaced with myriad alternatives such as phosphines, isocyanides, alkenes, hydride, etc. Some carbonyl clusters contain two or more metals. Others contain carbon vertices. One example is t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carborane
Carboranes (or carbaboranes) are electron-delocalized (non-classically bonded) clusters composed of boron, carbon and hydrogen atoms.Grimes, R. N., ''Carboranes 3rd Ed.'', Elsevier, Amsterdam and New York (2016), . Like many of the related boron hydrides, these clusters are Polyhedron, polyhedra or fragments of polyhedra. Carboranes are one class of heteroboranes. In terms of scope, carboranes can have as few as 5 and as many as 14 atoms in the cage framework. The majority have two cage carbon atoms. The corresponding carbon, C-alkyl and boron, B-alkyl analogues are also known in a few cases. Structure and bonding Carboranes and boranes adopt 3-dimensional cage (Cluster chemistry, cluster) geometries in sharp contrast to typical organic compounds. Cages are compatible with sigma—delocalized bonding, whereas hydrocarbons are typically chains or rings. Like for other electron-delocalized polyhedral clusters, the electronic structure of these cluster compounds can be described by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atom Cluster
Nanoclusters are atomically precise, crystalline materials most often existing on the 0-2 nanometer scale. They are often considered kinetically stable intermediates that form during the synthesis of comparatively larger materials such as semiconductor and metallic nanocrystals. The majority of research conducted to study nanoclusters has focused on characterizing their crystal structures and understanding their role in the nucleation and growth mechanisms of larger materials. Materials can be categorized into three different regimes, namely bulk, nanoparticles and nanoclusters. Bulk metals are electrical conductors and good optical reflectors and metal nanoparticles display intense colors due to surface plasmon resonance. However, when the size of metal nanoclusters is further reduced to form a nanocluster, the band structure becomes discontinuous and breaks down into discrete energy levels, somewhat similar to the energy levels of molecules. This gives nanoclusters similar q ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
