Book•
The inorganic heterocyclic chemistry of sulfur, nitrogen and phosphorus
01 Jan 1980-
TL;DR: In this paper, the inorganic heterocyclic chemistry of sulphur nitrogen and phosphorus is described as a way as one of the collective books that gives many advantages and advantages are not only for you, but for the other peoples with those meaningful benefits.
Abstract: No wonder you activities are, reading will be always needed. It is not only to fulfil the duties that you need to finish in deadline time. Reading will encourage your mind and thoughts. Of course, reading will greatly develop your experiences about everything. Reading the inorganic heterocyclic chemistry of sulphur nitrogen and phosphorus is also a way as one of the collective books that gives many advantages. The advantages are not only for you, but for the other peoples with those meaningful benefits.
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TL;DR: In this article, the authors deal with chlorocyclophophosphazenes and their reactions, including the replacement of halogens on halogenocycloprophazenes by a variety of nucleophiles.
Abstract: Publisher Summary This chapter deals with chlorocyclophosphazenes and their reactions. Cyclophosphazenes are inorganic heterocyclic ring compounds containing an [N=PX 2 ] repeat unit in a valence-unsaturated skeleton that are isoelectronic with the corresponding siloxanes that contain the [OSiX 2 ] repeat unit. Within these compounds phosphorus is pentavalent and tetracoordinate while nitrogen is trivalent and dicoordinate. The cyclophosphazene ring systems constitute a regular and homologous series and the ring size varies considerably. The chemistry of cyclophosphazenes comes from different directions. Firstly, the replacement of halogens on halogenocyclophosphazenes by a variety of nucleophiles has been a fertile area of research fraught with many interesting problems connected with the question of regio- and stereo-selectivity of the substitution reaction, the kinetics of the reactions involved, and the structural elucidation of the products formed. Secondly, substituted cyclophosphazenes can serve as excellent ligands for a number of transition metal ions. The traditional and most extensively used method of synthesis of chlorocyclophosphazenes [NPCls] n involves the reaction of finely ground ammonium chloride with phosphorus pentachloride in a high boiling solvent such as sym -tetrachloroethane.
133 citations
TL;DR: In this article, the results obtained in the investigation of sulfur containing ligands (dithiophosphates, -phosphates and-phosphonates), in a broad international cooperation, are concisely presented.
108 citations
Book•
01 Jan 2005
TL;DR: Inorganic Polymers: Problems and Prospects as mentioned in this paper... Inorganic Polysiloxanes, Polysilanes, and Other Silicon-Containing Polymers (SPCP) are the most commonly used polysilicon-containing polymers.
Abstract: Inorganic Polymers: Problems and Prospects.- Organic Polymers - A Brief Survey.- Cyclo- and Polyphosphazenes.- Cyclophosphazene-Containing Polymers.- Other Inorganic Polymers that Contain Phosphorus, Boron and Sulfur.- Polysiloxanes.- Polysilanes and Other Silicon-Containing Polymers.- Organometallic Polymers.
67 citations
Cites background from "The inorganic heterocyclic chemistr..."
...The focus of this book is on non-traditional polymers built from inorganic or organometallic monomers [6-17]....
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...Detailed accounts are available in a number of excellent reviews and monographs [1-10]....
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...These can be summarized as follows [5, 7, 9, 10]....
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...3 Electronic Spectra Most cyclophosphazenes that do not contain other chromophores as substituents do not have prominent absorption in the UV-Visible region of the electromagnetic spectrum [9, 10]....
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...4 X-ray Crystal Structures The X-ray crystal structures of many cyclophosphazenes are known [7, 9, 10]....
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TL;DR: A colorimetric paper-based sensor proposed for the rapid monitoring of six major organophosphate and carbamate pesticides showed high selectivity to the pesticides in the presence of other potential species and is capable of determining the pesticide compounds in tap water, apple juice, and rice samples.
Abstract: A colorimetric paper-based sensor is proposed for the rapid monitoring of six major organophosphate and carbamate pesticides. The assay was constructed by dropping gold and silver nanoparticles on the hydrophilic zones of a paper substrate. The nanoparticles were modified by L-arginine, quercetin, and polyglutamic acid. The mechanism of sensing is based on the interaction between the pesticide and the nanoparticles. The color of nanoparticles changed during the interactions. A digital camera recorded these changes. The assay provided a unique response for each studied pesticide. This method can determine six individual pesticides including carbaryl, paraoxon, parathion, malathion, diazinon, and chlorpyrifos. The limit of detection for these pesticides were 29.0, 22.0, 32.0, 17.0, 45.0, and 36.0 ng mL−1, respectively. The assay was applied to simultaneously determine the six studied pesticides in a mixture using the partial least square method (PLS). The root mean square errors of prediction were 11, 8.7, 9.2, 10, 12, and 11 for carbaryl, paraoxon, parathion, malathion, diazinon, and chlorpyrifos, respectively. The paper-based device can differentiate two types of studied pesticide (organophosphate and carbamate) as well as two types of organophosphate structures (oxon and thion). Furthermore, this sensor showed high selectivity to the pesticides in the presence of other potential species (e.g., metal ions, anions, amino acids, sugar, and vitamins). This assay is capable of determining the pesticide compounds in tap water, apple juice, and rice samples. Graphical abstract
53 citations
Cites background from "The inorganic heterocyclic chemistr..."
...Capping agents can be involved in the electrophilic or nucleophilic interactions because of the high affinity of phosphor atom to form P-N, P-O, or P-S bonds [46, 47]....
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34 citations