Properties of inorganic complexes

The chemical and physical properties of inorganic complexes which exhibit a columnar structure are discussed below. Section II. A discusses highly conducting one-dimensional inorganic materials which may be described in terms of a partially occupied electron energy band. Section II.B describes those complexes which exhibit a columnar structure and generally low conductivity. Several less well characterized materials which may exhibit columnar structure are introduced in Section II. C. Section II. D selectively surveys inorganic polymers, with emphasis on poly(sulfurnitride). 

B. D. Cutforth, W. R. Datars, R. J. Gillespie, and A. van Schyndel, Unusual Properties of Inorganic Complexes, 1975 Inorganic Chemistry Symposium, Athens, Ga., January 1975, R. B. King, Ed., in press. 

The structure theory of inorganic chemistry may be said to have been bom only fifty years ago, when Werner, Nobel Laureate in Chemistry in 1913, found that the chemical composition and properties of complex inorganic substances could be explained by assuming that metal atoms often coordinate about themselves a number of atoms different from their valence, usually four atoms at the comers either of a tetrahedron or of a square coplanar with the central atom, or six atoms at the comers of an octahedron. His ideas about the geometry of inorganic complexes were completely verified twenty years later, through the application of the technique of x-ray diffraction. 

The previous chapters have demonstrated that liquid-liquid extraction is a mass transfer unit operation involving two liquid phases, the raffinate and the extract phase, which have very small mutual solubihty. Let us assume that the raffinate phase is wastewater from a coke plant polluted with phenol. To separate the phenol from the water, there must be close contact with the extract phase, toluene in this case. Water and toluene are not mutually soluble, but toluene is a better solvent for phenol and can extract it from water. Thus, toluene and phenol together are the extract phase. If the solvent reacts with the extracted substance during the extraction, the whole process is called reactive extraction. The reaction is usually used to alter the properties of inorganic cations and anions so they can be extracted from an aqueous solution into the nonpolar organic phase. The mechanisms for these reactions involve ion pah-formation, solvation of an ionic compound, or formation of covalent metal-extractant complexes (see Chapters 3 and 4). Often formation of these new species is a slow process and, in many cases, it is not possible to use columns for this type of extraction mixer-settlers are used instead (Chapter 8). 

Thermodynamics plays a major role in helping the inorganic chemist to understand the effects that are important in determining the stability of complex metal ions in aqueous solution, including the properties of the complexing ligand that affect its ability to form the complex ion. Within the last decade, macrocyclic compounds have been studied extensively,2 in large part because of... 

When organic or inorganic guests are encapsulated by such cavitands, how do the physical properties of the complex differ from those of the host and guest taken separately ... 

These results demonstrate that, in analogy to the multidomain proteins in biosili-cification, triblock copolymers can direct the assembly of silica into complex structures. Furthermore, combining complex ABC copolymer architectures with the physical, electrical, and optical properties of inorganic materials holds considerable... 

During the last two decades there has been renewed interest in the field of homogeneous catalysis, brought on partly by the renascence of inorganic chemistry, in which attention has been focused on the preparation and properties of coordination complexes of transition metals. Much effort has also been directed toward the elucidation of the fundamental roles of transition metal complexes in homogeneous liquid phase oxidations. 

Included for the first time in this section are books and surveys on spectroscopic techniques which are of great use to the organometallic chemist. In addition to the Chemical Society Specialist Periodical Reports on Spectroscopic Properties of Inorganic and Organometallic Compounds (B6.1) and Mass Spectrometry (B6.2), a series of Annual Reviews (volumes 1 or 2) or Reports (volume 3 onwards) on Nuclear Magnetic Resonance Spectroscopy contains surveys of or P NMR results appertaining to organo-transition metal complexes. 

Figure 2.15 Asymmetric unit of [Eu(L )3(PBO)] with atom numbering scheme and thermal ellipsoids (30%) [70], (Reproduced with permission from L.H. Gao, M. Guan, K.Z. Wang, L.P. Jin and C.H. Huang, A comparative study of the optical and electroluminescent properties of Eu complexes with TTA and 2-(2 -pyridyl)azoles thecrystal structureof [Eu(TTA)3(PBO)], Mrcpea /oMmaZ of Inorganic Chemistry, 2006, 2006, 3731-3737. Wiley-VCH Verlag GmbH Co. KGaA.)...

Figure 4.21 The structure of [Lu(19)2](CH30H)(H20)] + [37]. (Reproduced with permission from C. Piguet, A.R Williams, C. Bemardine and J.C.G. Btinzli, Structural and photophysical properties of lanthanide complexes with planar aromatic tridentate nitrogen ligands as luminescent building blocks for triple-helical structures, Inorganic Chemistry, 32, 4139, 1993. 1993 American Chemical Society.)...

Mato-lglesias, M., Rodrrguez-Blas, T., Platas-lglesias, C., etal. (2009) Solution structure and dynamics, sta-biUty, and NIR emission properties of lanthanide complexes with a carboxylated bispyrazolylpyridyl ligand. Inorganic Chemistry, 48, 1507. 

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