Rhenium Fluorides

Rakov, E. G.; Dudin, A S; Opalovskii, A A

doi:10.1070/rc1980v049n10abeh002520

Cited by 4 publications

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“…= 1.996 Å). Binary rhenium fluorides and rhenium fluoride salts are known from the oxidation state VII to III . As the metal oxidation state decreases, the Re–F bond lengths increases (see Table ).…”

Section: Resultsmentioning

confidence: 99%

Uncovering Multiple Metal–Metal Bonding in a Tetranuclear Fluoride Rhenium Cluster or the Curious Case of {[Ni(H₂O)₆](NH₄)₄}[Re₄F₁₈]·4H₂O

et al. 2019

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The compound {[Ni(H2O)6](NH4)4}[Re4F18]·4H2O (1) has been isolated and characterized by single‐crystal X‐ray diffraction, Raman spectroscopy and computational methods. The compound 1 crystallizes in the triclinic space group P1 (a = 6.6620(9) Å, b = 9.7121(13) Å, c = 11.2007(15) Å, α = 67.644(2)°, β = 83.827(2)°, γ = 84.366(2)°). In 1, the [Re4F18]6– anion is composed of four Re(III) atoms bridged by two µ‐bridging fluorine atoms and two di‐µ‐bridging fluorine atoms. In [Re4F18]6–, the shortest Re–Re distance (i.e., 2.3631(6) Å) is characteristic of the presence of a Re=Re double bond; the Re–F distances range from 1.854(6) to 2.008(5) Å. Theoretical calculations confirm the presence of a weak Re=Re double bond; the Mayer–Mulliken bond order of the doubly bridged Re atoms is 1.8097 and the natural localized molecular orbital bond order is 1.8751. The Raman spectrum of 1 has been measured and shows a series of bands in the region 167–1449 cm–1 that have been attributed to Re–F and Ni–O stretches, Re4F18 ring breathing and NH4+ bending and libration modes.

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Section: Resultsmentioning

confidence: 99%

Uncovering Multiple Metal–Metal Bonding in a Tetranuclear Fluoride Rhenium Cluster or the Curious Case of {[Ni(H₂O)₆](NH₄)₄}[Re₄F₁₈]·4H₂O

et al. 2019

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“…32 Future studies will explore the possibility of having Re ions with some Re VI character, which has an expected effective moment of 1.73 m B and experimental values between 0.3 and 1.7 m B . 33 At low temperature (<6 K), the magnetisation of 1 is dominated by a component that saturates with field (Fig. 6(a)).…”

Section: Magnetic Propertiesmentioning

confidence: 99%

Heterometallic complexes involving iron(ii) and rhenium(vii) centers connected by μ-oxido bridges

et al. 2009

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The reaction of FeI(2) with two equivalents of AgReO(4) in acetonitrile leads to yellow, crystalline Fe(ReO(4))(2)(CH(3)CN)(3) (1), and the treatment of 1 with four equivalents of CpFe(CO)(2)CN gives orange, crystalline Fe(ReO(4))(2)[CpFe(CO)(2)(CN)](4) (2). Compound 2 can also be prepared in one step by the reaction of FeI(2), AgReO(4) and CpFe(CO)(2)CN in dichloromethane. The structure of 1 consists of infinite chains in which alternating {Fe(CH(3)CN)(4)} and {Fe(ReO(4))(2)(CH(3)CN)(2)} units are linked by perrhenate anions to form a (-ReO(2)-O-Fe(ReO(4))(2)(CH(3)CN)(2)-O-ReO(2)-O-Fe(CH(3)CN)(4)-O-)(n) molecular wire. The structure of 2 shows a monomeric iron complex with a slightly distorted octahedral coordination environment consisting of four organometallic complexes coordinated in the equatorial plane via the cyanide groups and two monodentate perrhenates in the corresponding apical positions. Both compounds were further characterised in the solid state by IR spectroscopy, thermogravimetric analysis and magnetic susceptibility measurements. The magnetic data indicate that 1 behaves as a ferrimagnetic chain with 3D ordering below 8 K due to inter-chain interactions. Compound 2 has antiferromagnetic interactions within the Fe(ReO(4))(2)[CpFe(CO)(2)(CN)](4) clusters.

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Rhenium

Turp¹

1983

Coordination Chemistry Reviews

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Rhenium Fluorides

Cited by 4 publications

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Uncovering Multiple Metal–Metal Bonding in a Tetranuclear Fluoride Rhenium Cluster or the Curious Case of {[Ni(H₂O)₆](NH₄)₄}[Re₄F₁₈]·4H₂O

Uncovering Multiple Metal–Metal Bonding in a Tetranuclear Fluoride Rhenium Cluster or the Curious Case of {[Ni(H₂O)₆](NH₄)₄}[Re₄F₁₈]·4H₂O

Heterometallic complexes involving iron(ii) and rhenium(vii) centers connected by μ-oxido bridges

Rhenium

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Rhenium Fluorides

Cited by 4 publications

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Uncovering Multiple Metal–Metal Bonding in a Tetranuclear Fluoride Rhenium Cluster or the Curious Case of {[Ni(H2O)6](NH4)4}[Re4F18]·4H2O

Uncovering Multiple Metal–Metal Bonding in a Tetranuclear Fluoride Rhenium Cluster or the Curious Case of {[Ni(H2O)6](NH4)4}[Re4F18]·4H2O

Heterometallic complexes involving iron(ii) and rhenium(vii) centers connected by μ-oxido bridges

Rhenium

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Uncovering Multiple Metal–Metal Bonding in a Tetranuclear Fluoride Rhenium Cluster or the Curious Case of {[Ni(H₂O)₆](NH₄)₄}[Re₄F₁₈]·4H₂O

Uncovering Multiple Metal–Metal Bonding in a Tetranuclear Fluoride Rhenium Cluster or the Curious Case of {[Ni(H₂O)₆](NH₄)₄}[Re₄F₁₈]·4H₂O