Crystal structure of tetraethylammonium fac-tricarbonyl(hexafluoroacetylacetonato-κ
 2O,O′)-(nitrato-κO)rhenium(I), C16H21O8N2F6Re

Zeitschrift Für Kristallographie - New Crystal Structures

Visser

et al. 2020

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Section: Commentmentioning

confidence: 99%

The crystal structure of fac-tricarbonyl(1,10-phenanthroline-κ² N,N′)-(pyrazole-κN)rhenium(I)nitrate, C₁₈H₁₂O₃N₄Re

Ramoba

Zeitschrift Für Kristallographie - New Crystal Structures

Visser

et al. 2020

Self Cite

“…In the coordination sphere, the Re1-P1 bond distance of 2.4718(7) Å is the longest and is consistent with those found in similar Re(I)-tricarbonyl complexes. All the bond distances and angles are considered to be within the normal range [11][12][13][14][15][16][17][18][19][20][21][22][23][24].…”

Section: Commentmentioning

confidence: 99%

Crystal structure of fac-(acetylacetonato-κ² O,O′)tricarbonyl(benzyldiphenylphosphine-κP)rhenium(I), C₂₇H₂₄O₅PRe

Manicum

Zeitschrift Für Kristallographie - New Crystal Structures

Schutte‐Smith

et al. 2017

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C 27 H 24 O 5 PRe, triclinic, P1 (no. 2), a = 9.0305(17) Å, b = 12.084(2) Å, c = 12.403(2) Å, α = 89.688(6)°, β = 70.083(6)°, γ = 76.315(6)°, V = 1232.2(4) Å 3 , Z = 2, R gt (F) = 0.0180, wR ref (F 2 ) = 0.0432, T = 100(2) K. CCDC no.: 1569117The asymmetric unit of the title crystal structure is shown in the figure. Tables 1 and 2 contain details of the measurement method and a list of the atoms including atomic coordinates and displacement parameters. Source of materialsThe starting complex fac-[Re(CO) 3 (H 2 O)(acac)] was prepared according to a published procedure [6]. fac-[Re(CO) 3 (H 2 O)(acac)] (39 mg; 0.1 mmol) was dissolved in MeOH (3 mL) and benzyldiphenylphosphine (PPh 2 Bz) (0.028 g; 0.1 mmol) dissolved in methanol (2 mL) was added. The solution was stirred for 6 h at room temperature. The light yellow solution was left to crystallise and yellow crystals of the title complex were collected. Yield = 40 mg, 62%. Experimental detailsIn the structure, all the H atoms were positioned geometrically and refined discemible using a riding model, with C-H methine = 0.98 Å; C-H methylene = 0.99 Å; C-H methyl = 0.96 Å; C-H aromatic = 0.93 Å. The U iso parameters of the H atoms were fixed; U iso (H) = 1.2U eq (C) for aromatic and methine and U iso (H) = 1.5U eq (C). A limited number of inner reflections, which are cut by the primary beam stop have been omitted manually. CommentSome radionuclides of some metals are of significat interest for its rich coordination abilities and nuclear properties. The radiometal that has received significant attention is 99m Tc, because it is easily accessible and possesses almost near perfect nuclear properties; (t 1/2 = 6.02 h; γ = 140 keV, 100%).

Crystal structure of fac-(acetylacetonato-κ ² O,O′)tricarbonyl(tri(p-tolyl)phosphine-κP)rhenium(I), C₂₉H₂₈O₅PRe

Manicum

Zeitschrift Für Kristallographie - New Crystal Structures

Schutte‐Smith

et al. 2017

Self Cite

CCDC no.: 1569066One representative complex is shown (Z′ = 4) n = A, B, C, D and n′ = 1-4 for the four respective molecules. Tables 1 and 2 contain details of the measurement method and a list of the atoms including atomic coordinates and displacement parameters. Source of materialsThe starting complex fac-[Re(CO) 3 (H 2 O)(acac)] was prepared according to a published procedure [1]. fac-[Re(Acac)(CO) 3 (H 2 O)] (39 mg; 0.1 mmol) was dissolved in methanol (3 mL) and P(p-tolyl) 3 (31 mg; 0.1 mmol) dissolved in 3 mL methanol was added. The solution was stirred for 8 hours at room temperature and then left to crystallize. Yield = 49 mg, 72%. IR (KBr, cm −1 ): ν CO = 2020, 1887. Experimental detailsIn the structure all the H atoms were positioned geometrically and refined discemible using a riding model, with C-H methine = 0.98 Å; C-H methyl = 0.96 Å; C-H aromatic = 0.93 Å. The H atom isotropic displacement parameters were fixed; U iso (H) = 1.2U eq (C) for aromatic and methine and U iso (H) = 1.5U eq (C) for methyl protons, allowing them to ride on the parent atom. CommentIn recent years, rhenium has become one of the most studied transition metals due to the development of the fac- [Re(CO)