A Remarkable Base‐Stabilized Bis(silylene) with a Silicon(I)–Silicon(I) Bond

Sen, Sakya S.; Jana, Anukul; Roesky, Herbert W.; Schulzke, Carola

doi:10.1002/anie.200902995

Cited by 167 publications

(131 citation statements)

References 43 publications

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“…This is in contrast to the corresponding bromo derivatives [8]. Independently, Lappert et al and we reported on the b-diketiminate of lead(II) bromo derivative [9,10] [12] with elemental bromine. Herein we outline the preparation and characterization of the monomeric LGeBr (1) and LSnBr (2) [L = HC(CMeNAr) 2 ; Ar = 2,6-iPr 2 C 6 H 3 ] compounds.…”

Section: Introductioncontrasting

confidence: 65%

Synthesis and characterization of β-diketiminate germanium(II) and tin(II) bromides

Jana

Schwab

Roesky

2010

Inorganica Chimica Acta

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Section: Introductioncontrasting

confidence: 65%

Synthesis and characterization of β-diketiminate germanium(II) and tin(II) bromides

Jana

Schwab

Roesky

2010

Inorganica Chimica Acta

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“…[10] However, it is substantially shorter than those observed for the other reported disilyne bis(Lewis base) adducts IIa, b (2.393-2.413 ) [2,3] and is even shorter than in the similar adduct 4 (2.369 ) with 1,2-disilaketenimine character [11] ( Table 1). …”

mentioning

confidence: 78%

“…[4] In fact, the chemical properties of the Lewis base stabilized disilynes should be strongly affected by the complexation, and this important issue needs to be addressed. However, compared to transition-metal derivatives, the coordination chemistry of main-group-element species such as disilynes [2][3][4] or silylenes [5] is not very well developed, although their transition-metal-like behavior is of great interest. [6] Thus, although phosphines are ubiquitous ligands in organometallic chemistry, their use in main-groupelement chemistry is not so frequent.…”

mentioning

confidence: 99%

“…[2] Only a few stable disilyne bis(Lewis base) adducts IIa,b with different ligands have been synthesized to date. Strongly s-donating ligands with a weak p-accepting character such as N-heterocyclic carbenes [2] or imines [3] induce highly polarized 1,2-diylidic structures with long SiÀSi single bonds. As a consequence, each silicon center in these adducts II exhibits a lone pair of electrons.…”

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confidence: 99%

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Synthesis of a Stable Disilyne Bisphosphine Adduct and Its Non‐Metal‐Mediated CO₂ Reduction to CO

et al. 2010

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“…3 In this regard, the treatment of [LSi(S)Cl] 5 with two equivalents of KC 8 in THF was performed. A mixture of 2 (major product) and the disilylene [LSi-SiL] (minor product) 6 was afforded in the reaction, which has been confirmed by NMR spectroscopy. Compound 2 is stable in solution or the solid state at room temperature under an inert atmosphere.…”

Section: Synthesis and Characterization Of An Amidinate-stabilized Simentioning

confidence: 70%

Synthesis and Characterization of an Amidinate-Stabilized Siladithiocarboxylate and Its Germanium(II) Complex

Zhang

Lim

et al. 2011

Organometallics

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b S Supporting Information C arboxylates A (Scheme 1) are one of the most significant functional groups in chemistry, biochemistry, and material sciences. It is well-known that the CÀO bond lengths of a carboxylate are equal and the negative charge is delocalized on the carboxylate skeleton. Carboxylates can act as a nucleophile in various organic reactions. Dithiocarboxylates B and dithiocarbamates C, in which two oxygen atoms in the carboxyl group are replaced by sulfur atoms, have been synthesized. Their coordination chemistry toward main-group and transition metals were investigated extensively. 1 They can stabilize metal complexes with a variety of oxidation states and coordination geometries. In contrast, the siladichalcogenocarboxylates [RSi(E) 2 ] À (D, R = supporting substituent, E = chalcogen) are still unknown.Recently, Driess et al. synthesized successfully the silathiocarboxylic acidÀbase adduct [{HC(CMeNAr) 2 }Si(S)OH(dmap)] (Ar = 2,6-Pr i 2 C 6 H 3 ), which reacted with AlMe 3 to form the aluminum silathiocarboxylate [{HC(CMeNAr) 2 }Si(S)OAlMe 2 -(dmap)]. 2 However, the reaction of [HC{CMeNAr} 2 Si(S)OH (dmap)] with MeLi or LiN(SiMe 3 ) 2 cannot afford the corresponding anion. Roesky et al. showed that the reaction of [LGeCl(μ-S)] 2 (L = PhC(NBu t ) 2 ) with two equivalents of KC 8 in THF formed the germadithiocarboxylate [{LGe(S) 2 }K(μ-THF)] 2 . 3 In contrast, the lighter congener, siladithiocarboxylate, is still unknown. The coordination chemistry of heavier group 14 analogues of dichalcogenocarboxylate toward main-group and transition metals is also rare. Herein, we report the synthesis and characterization of an amidinate-stabilized siladithiocarboxylate, [{LSi(S) 2 }K(THF) 2 ] 2 (2), and a germanium(II) siladithiocarboxylate, [{LSi(S) 2 } 2 Ge:] (3).The novel siladithiocarboxylate [{LSi(S) 2 }K(THF) 2 ] 2 (2) was synthesized by the reaction of [LSiCl] (1) 4 with two equivalents of elemental sulfur and KC 8 in THF (Scheme 2). The reaction was stirred for 2 h. The reaction mixture was filtered, and volatiles of the filtrate were removed in vacuo. The crude product was then characterized by 1 H and 29 Si NMR spectroscopy in THF-d 8 . The spectra show a mixture of 2 (major product), [LSi(S)Cl] 5 (minor product), and unidentified compounds (minor product). The crude product was extracted with THF. After filtration and concentration, only compound 2 was afforded as colorless crystals. An attempt to isolate [LSi(S)Cl] 5 and the unidentified compounds from the mother liquor by recrystallization was unsuccessful.Roesky et al. showed that the germadithiocarboxylate [{LGe(S) 2 }K (μ-THF)] 2 was synthesized by the reaction of [LGeCl(μ-S)] 2 with two equivalents of KC 8 in THF. 3 In this regard, the treatment of [LSi(S)Cl] 5 with two equivalents of KC 8 in THF was performed. A mixture of 2 (major product) and the disilylene [LSi-SiL] (minor product) 6 was afforded in the reaction, which has been confirmed by NMR spectroscopy. Scheme 1. Anions AÀDABSTRACT: The synthesis and characterization of the amidina...

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A Remarkable Base‐Stabilized Bis(silylene) with a Silicon(I)–Silicon(I) Bond

Cited by 167 publications

References 43 publications

Synthesis and characterization of β-diketiminate germanium(II) and tin(II) bromides

Synthesis and characterization of β-diketiminate germanium(II) and tin(II) bromides

Synthesis of a Stable Disilyne Bisphosphine Adduct and Its Non‐Metal‐Mediated CO₂ Reduction to CO

Synthesis and Characterization of an Amidinate-Stabilized Siladithiocarboxylate and Its Germanium(II) Complex

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A Remarkable Base‐Stabilized Bis(silylene) with a Silicon(I)–Silicon(I) Bond

Cited by 167 publications

References 43 publications

Synthesis and characterization of β-diketiminate germanium(II) and tin(II) bromides

Synthesis and characterization of β-diketiminate germanium(II) and tin(II) bromides

Synthesis of a Stable Disilyne Bisphosphine Adduct and Its Non‐Metal‐Mediated CO2 Reduction to CO

Synthesis and Characterization of an Amidinate-Stabilized Siladithiocarboxylate and Its Germanium(II) Complex

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Synthesis of a Stable Disilyne Bisphosphine Adduct and Its Non‐Metal‐Mediated CO₂ Reduction to CO