Unexpected Conformational Behaviour of a Diphosphate Derived from a Spherand‐Type Calixarene

Böhmer, Volker; Costisella, Burkhard; Gloede, J.; Ozegowski, Sigrid; Schneider, Mat­thias; Thondorf, Iris

doi:10.1002/ejoc.200400906

Cited by 3 publications

(1 citation statement)

References 13 publications

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“…Spherand-type calixarenes containing diphosphate groups have been prepared by reaction of a calix [6]arene with PCl 5 . 59 The conformational behaviour of these species was probed by calculations, X-ray diffraction and NMR spectroscopy. The oxidation chemistry of a coordinated phosphinidene oxide ligand in the complex [DBU-H][Mo(Z 5 -C 5 H 5 )(CO) 2 (P{O}Mes*)] has been reported.…”

Section: Phosphorusmentioning

confidence: 99%

Nitrogen, phosphorus, arsenic, antimony and bismuth

Lynam

2006

Annu. Rep. Prog. Chem., Sect. A: Inorg. Chem.

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This chapter reviews the literature reported during 2005 on the chemistry of nitrogen, phosphorus, arsenic, antimony and bismuth. PreambleOnce again the study of the chemistry of the pnictogens has provided considerable challenges to both synthetic and theoretical chemists. Significant new advances and insights into have been made, of particular note are the developments in the areas of activation of dinitrogen, such as the work of Schrock on molybdenum complexes 1,2 and the discovery of an amido-hydride complex from activation of ammonia. 3 Further highlights include the continued expansion of the use of metal phosphinidene complexes as synthetic reagents for the production of novel phosphoruscontaining materials and the synthesis of several new cationic arsenic-containing species.As in previous years and due to space restrictions this review will not, in general, consider the use of the trivalent elements as ligands, however reviews on ''user friendly'' primary phosphines 4 and how to evaluate the net donor abilities of phosphines 5 have appeared. NitrogenThe activation of dinitrogen remains a major area of interest. The molybdenumcentred reduction of dinitrogen to ammonia remains one of the most impressive methods of nitrogen fixation and a review on this subject has appeared 1 as has a comprehensive study into several aspects of this chemistry. 2 It has been shown that under an atmosphere of N 2 , the dimer [Ta(Z 5 -C 5 Me 4 R)] 2 (m-Cl) 4 (R = Me, Et) disproportionates to give [Ta(Z 5 -C 5 Me 4 R)] 2 (m-Z 1 ,Z 1 -N 2 ) as the nitrogen-containing product. 6 The dinitrogen may be considered to have undergone a four-electron reduction with the tantalum now existing in the (V) oxidation state. In a similar fashion, reduction of [Ti(Z 5 -C 5 Me 5 )Cl 3 ] in the presence of substituted fulvene gives rise to dinuclear species containing a (m-Z 1 , Z 1 -N 2 ) ligand. 7 The reduction of the zirconium complex [NPN]ZrCl 2 (thf) [NPN = PhP(CH 2 SiMe 2 NPh) 2 ] under nitrogen results in the formation of [NPN]Zr(m-Z 2 , Z 2 -N 2 )(thf). 8 A similar reaction with the titanium analogue results in the insertion of dinitrogen into the Ti-PPh bond and formation of 1. Using a related ligand set within the coordination sphere of tantalum, Fryzuk has also shown that it is possible to convert hydrazine to bridging Ta-NH-Ta groups. 9 A reaction of the same precursor with Me 2 NNH 2 results in the formation of a complex containing a bridging nitride ligand. The oxidative addition

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Section: Phosphorusmentioning

confidence: 99%

Nitrogen, phosphorus, arsenic, antimony and bismuth

Lynam

2006

Annu. Rep. Prog. Chem., Sect. A: Inorg. Chem.

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Cryptands and Spherands

Lindoy

Park

Lee

2012

Supramolecular Chemistry

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The cryptands and spherand are both categories of ligands exhibiting significant degrees of preorganization of their donor atom sets. The design, synthesis, and host–guest binding properties of representative examples of each ligand category are discussed, with emphasis on structure‐function relationships. A characteristic feature of both of these categories is their tendency to exhibit selective complexation behavior toward individual metal cations, especially alkali metal cations. Individual species from each category that bind ammonium and/or alkylammonium cations are also presented. Examples of spherand and cryptand derivatives, including “intermediate” ligand species of the hemispherand and cryptaspherands type, as well as chromoionophoric derivatives of each category, are also discussed. Spherand derivatives in which some or all of the anisyl groups of the “classical” spherands have been replaced by fluoro, cyano, or urea functions are described. Examples of both bicyclic and tricyclic cryptands and their cryptate derivatives, including anion‐binding systems and ones that yield binuclear metal complexes, are also discussed.

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Phosphorus-containing macrocyclic compounds: synthesis and properties

Knyazeva¹,

Бурилов²,

Пудовик³

et al. 2013

Russ. Chem. Rev.

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Main trends in the development of methods for Main trends in the development of methods for the synthesis of phosphorus-containing macrocyclic com-the synthesis of phosphorus-containing macrocyclic compounds in the past 15 years are considered. Emphasis is pounds in the past 15 years are considered. Emphasis is given to reactions producing macrocyclic structures with the given to reactions producing macrocyclic structures with the participation of a phosphorus atom and other functional participation of a phosphorus atom and other functional groups involved in organophosphorus molecules and to groups involved in organophosphorus molecules and to modifications of macrocycles by phosphorus compounds modifications of macrocycles by phosphorus compounds in different valence states. Possibilities of the practical in different valence states. Possibilities of the practical application of phosphorus-containing macrocyclic com-application of phosphorus-containing macrocyclic compounds in difference areas of science and engineering are pounds in difference areas of science and engineering are discussed. The bibliography includes 205 references discussed. The bibliography includes 205 references. .

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Unexpected Conformational Behaviour of a Diphosphate Derived from a Spherand‐Type Calixarene

Cited by 3 publications

References 13 publications

Nitrogen, phosphorus, arsenic, antimony and bismuth

Nitrogen, phosphorus, arsenic, antimony and bismuth

Cryptands and Spherands

Phosphorus-containing macrocyclic compounds: synthesis and properties

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