The chemistry of coordinated perrhenate (ReO4−)

Chakravorti, M. C.

doi:10.1016/0010-8545(60)80004-5

Cited by 42 publications

(41 citation statements)

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“…Because they have the same tetrahedral geometry, similar charge density, and closely related chemical properties, perrhenate is a good model of pertechnetate and should behave in a nearly identical manner in anion trapping studies. (Figure 4), 33 an indication that perrhenate is trapped in this material. Crystallographic studies revealed that 2 crystallizes in the monoclinic space group C2 (Table S1) Figure 5.…”

Section: Synthesis and Structural Characterization Of Complexmentioning

confidence: 92%

“…Additional strong peaks in the 1400 and 1700 cm -1 region and the peak at 766 cm -1 are due to the aromatic phenyl and pyridine rings of L. After anion exchange, the two strong PF 6 -peaks disappear, and a new intense band at 909 cm -1 appears that is characteristic of the tetrahedral ReO 4 -anion. 33 Except for this change, all the other peaks from the cationic 2D layers are unaffected. This result confirms complete replacement of PF 6 -by ReO 4 -anions.…”

Section: Synthesis and Structural Characterization Of Complexmentioning

confidence: 97%

“…Numerous examples of free perrhenate, monodentate, bidentate, or bridging bidentate ReO 4 -anions are known in the literature, but a structurally characterized tridentate bridging ReO 4 -unit is extremely rare. 33,37 The Cu 3 (µ 3 -ReO 4 )…”

Section: Synthesis and Structural Characterization Of Complexmentioning

confidence: 99%

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Immobilization, Trapping, and Anion Exchange of Perrhenate Ion Using Copper-Based Tripodal Complexes

2011

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Abstract:We describe a multidentate tripodal ligand in which three pendant arms carrying di(2-picolyl)amine units are linked to the ortho-positions of a tris (o-xylyl) scaffold, providing N(CH 2 -o-C 6 H 4 -CH 2 N(CH 2 py) 2 ) 3 (L). Reaction of L with CuCl 2 in the presence of hexafluorophosphate anion afforded blue cubes of [(CuCl) 3 L](PF 6 ) 3 ⋅5H 2 O (1). Crystallographic studies of 1 revealed that the three symmetry-related arms each coordinate a {Cu II Cl} unit, and two molecules of 1 are connected to one another through a Cu(µ-Cl) 2 Cu bridge, extending the molecular structure to form a two-dimensional layer.These 2-D layers pack in an ABCABC… fashion with PF 6 -anions located in between.Reaction of 1 with a stoichiometric amount of perrhenate ion afforded blue plates ofCompound 2 has the same lattice structure of 1, but the tricopper unit backbone now traps one ReO 4 -anion through Coulombic interactions.In addition, three molecules of 2 are bridged by a perrhenate ion forming a Cu 3 (µ 3 -ReO 4 )cluster to give a different 2-D structure, displaying a rare tridentate bridging ReO 4 -mode.Thus in addition to classic perrhenate trapping through weak Coulombic interactions, 2 represents an exceptional example in which the ReO 4 -anion is immobilized in an extended framework through tight covalent interactions. The interlamellar PF 6 -anions in 1 can be exchanged with other anions including perrhenate, perchlorate, or periodate. The structural similarity between perrhenate and pertechnetate makes these materials of potential interest for pertechnetate trapping.3

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Section: Synthesis and Structural Characterization Of Complexmentioning

confidence: 92%

Section: Synthesis and Structural Characterization Of Complexmentioning

confidence: 97%

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Immobilization, Trapping, and Anion Exchange of Perrhenate Ion Using Copper-Based Tripodal Complexes

2011

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“…This is particularly true for simple perrhenic acid esters R-O-ReO 3 , in analogy to the (explosive) esters of perchloric and perbromic acid on the one hand, and of permanganic and pertechnetic acid on the other. An exceptional stability has been found, however, for silyl esters R 3 SiOReO 3 which can be prepared by simple metathesis of AgReO 4 with chlorosilanes R 3 SiCl or from siloxanes R 3 SiOSiR 3 and Re 2 O 7 [21].…”

Section: Introductionmentioning

confidence: 99%

“…These compounds are examples for the coordination chemistry of the perrhenate anion (with ReO 4 − as a ligand), which is generally not very well developed [3]. A survey of the various types of coordination compounds with perrhenate as a ligand shows that there is a paucity of examples in particular for coinage metal complexes in general, and for gold complexes in particular.…”

Section: Introductionmentioning

confidence: 99%

Bis(triphenylphosphine)gold(I) Perrhenate

Baer

Pöthig

Bawaked

et al. 2013

Zeitschrift Für Naturforschung B

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Dedicated to Professor Bernd Krebs on the occasion of his 75 th birthdayBis(triphenylphosphine)gold(I) perrhenate [Ph 3 PAuPPh 3 ] + ReO 4 − has been prepared in high yield from Ph 3 PAuCl, Ph 3 P and AgReO 4 in a mixed solvent. The compound is stable in air and decomposes at 235 • C. In the crystal structure, the two independent perrhenate anions are not approaching the gold centers of the two independent cations, but weak interionic interactions are entertained via π-π stacking of phenyl groups and C-H···O contacts. As three-blade chiral rotors, the Ph 3 P ligands of the cations are in a staggered conformation at the gold atoms with only slightly bent P-Au-P axes. IR and NMR data show no anomalies and are close to those of alkali or onium perrhenates.

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Technetium & Rhenium: Inorganic & Coordination Chemistry

Pombeiro¹,

Silva²,

Crabtree

2005

Encyclopedia of Inorganic Chemistry

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The inorganic and coordination chemistry of both rhenium and technetium is described in a condensed way with presentation of significant and typical compounds and reactions and applications in nuclear medicine and catalysis. After an Introduction, with properties of those elements and their sources, a description of binary compounds (for example oxides, sulfides, halides, and nitrides), their syntheses, structures, and selected reactions are given. This is followed by a treatment of the coordination chemistry of those metals, comprising hydrides, metal–metal bonded species and complexes with ligands coordinated by donor‐atoms mainly of the following periodic groups: 15 (commonly nitrogen and phosphorus, including dinitrogen, nitrile, nitric oxide and related ligands, hydrazides, diazenides, nitride, imides, pyrazolylborates, and phosphine ligands), 16 (mainly oxo, thio, and other O‐ or S‐ligands), and 17 (halide ligands); the metal–carbon (group 14) bond complexes are usually not covered since they are dealt with separately. Preparative methods, structures, and reactivities are illustrated for those types of complexes. Selected complexes of 99 m Tc and 186 Re (or 188 Re) are described and their applications in nuclear medicine illustrated, as radiopharmaceuticals normally for clinical diagnosis. The application of inorganic rhenium complexes in catalysis constitutes a currently expanding area of high potential and their use as catalysts for the following reactions is reviewed: oxygen atom transfer (OAT) and related reactions; isomerization or etherification of allylic or propargylic alcohols; Beckmann rearrangement of oximes; dehydration of primary amides and aldoximes; dehydrogenation of alkanes, unconventional reduction of aldehydes and ketones; aldol‐type reactions; and photo‐ and electrocatalytic reduction of carbon dioxide. A few catalytic applications of technetium compounds are also indicated.

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The chemistry of coordinated perrhenate (ReO4−)

Cited by 42 publications

References 58 publications

Immobilization, Trapping, and Anion Exchange of Perrhenate Ion Using Copper-Based Tripodal Complexes

Immobilization, Trapping, and Anion Exchange of Perrhenate Ion Using Copper-Based Tripodal Complexes

Bis(triphenylphosphine)gold(I) Perrhenate

Technetium & Rhenium: Inorganic & Coordination Chemistry

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