The Design of Tetradentate Ligands for Beryllium Encapsulation

Abstract

His research interests are broad and include beryllium coordination chemistry, magnetic materials, and supramolecular chemistry.

Synthesis and Characterization of Bulky 1,3‐Diamidopropane Complexes of Group 2 Metals (Be−Sr)

“…Most informative is its 9 Be NMR spectrum which exhibits a broad signal (ω 1/2 =556 Hz) centered at δ 9.4 ppm. While this is in the region typically found for both four‐ and three‐coordinate beryllium compounds, the broadness of the signal is consistent with a three‐coordinate system, rather than a four‐coordinate complex, the 9 Be NMR signals for which are generally much sharper [15] …”

Synthesis, Structural Characterization, and Bonding of Molecular Heavier Beryllium Chalcogenides

“…Due to its high toxicity, [1][2][3] the coordination chemistry of beryllium lags significantly behind that of the heavier alkaline earth metals [4][5][6][7][8][9] and has been carried out mainly in silico since the 1990s. [10] The increasing interest in low-valent main group chemistry in recent years, however, has also led to a renaissance in experimental beryllium chemistry, [11][12][13][14][15][16] culminating in the isolation of the first Be(0) [17] and Be(I) [18,19] complexes (e. g. I and II, Figure 1). These owe their stability to the strong σ-donor and π-acceptor properties of the cyclic alkyl(amino)carbene (CAAC) ligand(s), which has been raising vehement discussion about the validity of their metal oxidation state.…”

“…[25,26] In contrast, molecular beryllium chalcogenide complexes have been less widely explored. While the high oxophilicity of beryllium makes beryllium alkoxides particularly easy synthetic targets, [11][12][13][14][15] examples of heavier beryllium chalcogenide complexes remain scarce. Diorganoand diaminoberyllium complexes are known to undergo hydrolysis reactions with thiols and selenols to form beryllium dichalcogenides (Figure 1a).…”

[(Flu)-(CH2)2-(NHC)-CH2-(NHC)-(CH2)2-(Flu)]2−: an ‘all-organic’ hybrid and flexible ligand that enwraps a Ca2+pseudo-tetrahedrally

“…1). 5,7 Some arrangements can induce chirality as well. 6 c Such ligands mostly consist of N/P/O/S donors or their combinations, while C-donors are relatively rare.…”