Cyclodiphosphazanes with functionalities: Synthesis, reactivity and transition metal chemistry

Balakrishna, Maravanji S.

doi:10.1016/j.jorganchem.2009.11.024

Cited by 30 publications

(16 citation statements)

References 44 publications

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“…1,2 In recent studies they have been used creatively as building blocks in the synthesis of macrocycles with amido (NH) or chalcogenido (O, S, Se) linkers, 3 as well as those that incorporate coinage metals coordinated to the phosphorus(III) centers. 4 A fascinating recent example is afforded by the Cu4X4 clusters linked by P2N2 rings that resemble a sodalite framework. 5 In some cases these macrocycles are able to encapsulate halide 6 or perchlorate anions.…”

Section: Introductionmentioning

confidence: 99%

Main Group Tellurium Heterocycles Anchored by a P₂^VN₂ Scaffold and Their Sulfur/Selenium Analogues

et al. 2015

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A comprehensive investigation of reactions of alkali-metal derivatives of the ditelluro dianion [TeP V (N t Bu)(-N t Bu)]2 2− (L 2− , E = Te) with p-block element halides produced a series of novel heterocycles incorporating P V 2N2 rings, tellurium and group 13-16 elements. The dianion engages in Te,Te′-chelation to the metal center in Ph2Ge and R2Sn (R = t Bu, n Bu, Ph) derivatives; similar behavior was noted for group 14 derivatives of L 2− (E = S, Se). In the case of group 13 trihalides MCl3 (M = Ga, In), neutral spirocyclic complexes (L)M[N t Bu(Te)P V (-N t Bu)2P III N(H) t Bu)] (M = Ga, In) comprised of a Te,Te′-chelated ligand L 2− and a N,Te-bonded ligand resulting from loss of Te and monoprotonation were obtained. In reactions with RPCl2 (R = t Bu, Ad, i Pr2N) a significant difference was observed between Se-and S-containing systems. In the former case, Se,Se′-chelated derivatives were formed in high yields, whereas the N,S-chelated isomers predominated for sulfur. All complexes were characterized by multinuclear (1 H, 31 P, 77 Se, 119 Sn and 125 Te) NMR spectroscopy; this technique was especially 2 useful in the analysis of the mixture of (L)(Se) and (L)(SeSe) obtained from the reaction of Se2Cl2 with L 2− (E = Te). Single crystal X-ray structures were obtained for the spirocyclic In complex (9), (L)GePh2

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Section: Introductionmentioning

confidence: 99%

Main Group Tellurium Heterocycles Anchored by a P₂^VN₂ Scaffold and Their Sulfur/Selenium Analogues

et al. 2015

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“…6 Balakrishna has also described functionalised P 2 N 2 macrocycles with gold-bridges that incorporate a ClO 4 − ion. 7 The P(III)/P(III) systems with terminal alkylamido groups are readily oxidised by selenium or sulfur to give the corresponding P(V)/P(V) heterocycles, e.g. [ t BuNH(E)P(μ-N t Bu)] 2 (1Se and 1S).…”

Section: Introductionmentioning

confidence: 99%

Spirocyclic, macrocyclic and ladder complexes of coinage metals and mercury with dichalcogeno P₂N₂-supported anions

et al. 2015

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“…This is due to their extraordinary ability to act as versatile building blocks in the design and assembly of awide range of large inorganic frameworks, [14][15][16][17][18][19] and their applicability as multi-dentate ligands. [20][21][22] Recently,t hese species have experienced as low but steady renaissance,and the chemistry of cyclodiphosphazane compounds is regaining momentum within the main group arena. This is illustrated by their implementation in non-traditional areas where these species had little influence,such as catalysts for organic synthesis, [23][24][25] antitumor drugs, [26,27] and small molecule activation.…”

Section: Introductionmentioning

confidence: 99%

N‐Bridged Acyclic Trimeric Poly‐Cyclodiphosphazanes: Highly Tuneable Cyclodiphosphazane Building Blocks

et al. 2020

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We have synthesized ac ompletely new family of acyclic trimeric cyclodiphosphazane compounds comprising NH, N i Pr,N t Bu and NPh bridging groups.Inaddition, the first NH-bridged acyclic dimeric cyclophosphazane has been produced. The trimeric species displayh ighly tuneable characteristics so that the distance between the terminal N(H)R moieties can be readily modulated by the steric bulk present in the bridging groups (ranging from % 6to% 10). Moreover,these species exhibit pronounced topological changes when aw eak non-bonding NH•••p aryl interaction is introduced. Finally,the NH-bridged chloride binding affinities have been calculated and benchmarked along with the existing experimental data available for monomeric cyclodiphosphazanes.O ur results underscore these species as promising hydrogen bond donors for supramolecular host-guest applications.

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Cyclodiphosphazanes with functionalities: Synthesis, reactivity and transition metal chemistry

Cited by 30 publications

References 44 publications

Main Group Tellurium Heterocycles Anchored by a P₂^VN₂ Scaffold and Their Sulfur/Selenium Analogues

Main Group Tellurium Heterocycles Anchored by a P₂^VN₂ Scaffold and Their Sulfur/Selenium Analogues

Spirocyclic, macrocyclic and ladder complexes of coinage metals and mercury with dichalcogeno P₂N₂-supported anions

N‐Bridged Acyclic Trimeric Poly‐Cyclodiphosphazanes: Highly Tuneable Cyclodiphosphazane Building Blocks

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Cyclodiphosphazanes with functionalities: Synthesis, reactivity and transition metal chemistry

Cited by 30 publications

References 44 publications

Main Group Tellurium Heterocycles Anchored by a P2VN2 Scaffold and Their Sulfur/Selenium Analogues

Main Group Tellurium Heterocycles Anchored by a P2VN2 Scaffold and Their Sulfur/Selenium Analogues

Spirocyclic, macrocyclic and ladder complexes of coinage metals and mercury with dichalcogeno P2N2-supported anions

N‐Bridged Acyclic Trimeric Poly‐Cyclodiphosphazanes: Highly Tuneable Cyclodiphosphazane Building Blocks

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Main Group Tellurium Heterocycles Anchored by a P₂^VN₂ Scaffold and Their Sulfur/Selenium Analogues

Main Group Tellurium Heterocycles Anchored by a P₂^VN₂ Scaffold and Their Sulfur/Selenium Analogues

Spirocyclic, macrocyclic and ladder complexes of coinage metals and mercury with dichalcogeno P₂N₂-supported anions