Synthesis and structural characterization of alkaline–earth complexes containing a triazole-based selenide ligand

Balanta‐Díaz, Jhon A.; Moya‐Cabrera, Mónica; Jancik, Vojtech; Morales-Juárez, T. Jesús; Cea‐Olivares, Raymundo

doi:10.1016/j.poly.2013.07.001

Cited by 10 publications

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References 30 publications

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“…The geometry of the barium in complex 5 is therefore best described as distorted octahedral geometry. The Ba-Se bond distances [3.3274(7) Å, 3.3203(7) Å and 3.3518(7) Å] in complex 5 are within the range of the Ba-Se distances [3.366(1) Å and 3.324(1) Å] for the complex [{BaI(4,5-(P(Se)Ph 2 ) 2 tz)} 2 (thf) 7 ] reported by Raymundo Cea-Olivares et al 52 3.2787(11) Å for [Ba(THF) 4 (SeMes*) 2 ] (Mes* = 2,4,6-t-Bu 3 C 6 H 2 ) and 3.2973(3) Å for [{Ba(Py) 3 (THF)(SeTrip) 2 } 2 ] (Trip = 2,4,6-i Pr 3 C 6 H 2 ) reported by Ruhlandt-Senge et al, 34 3.3553(10) Å and 3.3314(10) Å for [Ba{Ph 2 P(Se)NCHPh 2 } 2 (THF) 2 ], and 3.3842(8) Å for [{η 2 -N(PPh 2 Se) 2 } 2 Ba(THF) 3 ] previously reported by us. 34,53 The K-Se distances 3.3627(15) Å and 3.4175(15) Å are also within the range [3.3090(10) Å] for the complex [{(THF) 2 KPh 2 P(Se)N(CHPh 2 ){ 2 ] reported by our group.…”

Section: Alkaline Earth Metal Complexessupporting

confidence: 72%

Synthesis of monomeric and polymeric alkali and alkaline earth metal complexes using a phosphinoselenoic amide ligand in metal coordination sphere

et al. 2014

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We report the monomeric complexes of magnesium and calcium of composition [M(THF) n {η 2-Ph 2 P(Se)N(CMe 3)} 2 ] [M = Mg (3), n = 1 and M = Ca (4), n = 2)] and polymeric complexes of potassium and barium of composition [K(THF) 2 {Ph 2 P(Se)N(CMe 3)}] n (2) and [K(THF)Ba{Ph 2 P(Se)N(CMe 3)} 3 ] n (5) respectively. The potassium complex 2 was readily prepared by the reaction of potassium bis(trimethylsilyl)amide with phosphinoselenoic amide ligand (1) at ambient temperature. The calcium complex 4 was prepared by two synthetic routes: in the first method, commonly known as salt metathesis reaction, the potassium complex 2 was made to react with alkaline earth metal diiodide at room temperature to afford the corresponding calcium complex. The metal bis(trimethylsilyl)amides were made to react with protic ligand 1 in the second method to eliminate the volatile bis(trimethyl)silyl amine. The magnesium complex 3 and barium complex 5 were prepared only through the first method. Solid-state structures of all the new complexes were established by single crystal X-ray diffraction analysis. The smaller ionic radii of Mg 2+ (0.72 Å) and Ca 2+ (0.99 Å) ions form the monomeric complex, whereas the larger ions K + (1.38 Å) and Ba 2+ (1.35 Å) were found to form onedimensional polymeric complexes with monoanionic ligand 1. Compound 2 serves an example of magnesium complex with a Mg-Se direct bond.

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Section: Alkaline Earth Metal Complexessupporting

confidence: 72%

Synthesis of monomeric and polymeric alkali and alkaline earth metal complexes using a phosphinoselenoic amide ligand in metal coordination sphere

et al. 2014

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Formation of Multinuclear s‐Block Metal Systems by Enhancement of the Coordination Properties of 1,2,3‐Triazole

et al. 2018

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The 4,5‐{Ph2(HO)C}2‐1,2,3‐triazole ligand (2) with two bulky Ph2C(HO) substituents was synthesized and used in the preparation of coordination compounds with selected group 1 metals. In the solid state, the high Lewis acidity of lithium caused the formation of di‐ and tetrametallic L2Li2thf4·2THF and L4Li4thf2(Et2O)2·2Et2O (L = monoanionic form of 2) species, while only the dimetallic derivative L2Na2thf4·2THF was observed for sodium. The larger size of potassium caused the formation of L6K6(H2O)thf2·2THF with a hexagonal drumlike inorganic core. 1H DOSY NMR spectroscopic studies confirmed the presence of multimetallic species also in solution. The molecular structures of the compounds were determined by single‐crystal X‐ray diffraction. In a comparative study, magnesium derivatives of 2 were prepared to evaluate the effect of a higher covalent character of the M–O bond leading to multimetallic polycyclic systems with up to 29 rings. Finally, the lithium compounds showed catalytic activity in the polymerization of ε‐caprolactone.

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Calcium, Strontium, and Barium

Mukherjee

2021

Comprehensive Coordination Chemistry III

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Synthesis and structural characterization of alkaline–earth complexes containing a triazole-based selenide ligand

Cited by 10 publications

References 30 publications

Synthesis of monomeric and polymeric alkali and alkaline earth metal complexes using a phosphinoselenoic amide ligand in metal coordination sphere

Synthesis of monomeric and polymeric alkali and alkaline earth metal complexes using a phosphinoselenoic amide ligand in metal coordination sphere

Formation of Multinuclear s‐Block Metal Systems by Enhancement of the Coordination Properties of 1,2,3‐Triazole

Calcium, Strontium, and Barium

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