Syntheses and crystal structures of lithium and niobium complexes containing a new type of monoanionic “scorpionate” ligand †

IR analysis of the carboxylate forms in structurally determined [CuII(κ3-L)2] species isolated from different acidic solutions

“…Hbdmpza and the metal compounds were prepared following previously reported procedures [11][12][13][14]. The single crystals for 2 and 3 were isolated by the same procedure.…”

On the synthesis of heterocyclic dendrons

“…Deprotonation with n-BuLi in THF at low temperature and subsequent reaction with carbon dioxide yielded the corresponding lithium carboxylate. 10 This lithium salt was reduced with BH 3 ·Me 2 S in THF 11 (Scheme 1). …”

Synthesis, spectroscopic characterization (IR,1H,13C and119Sn NMR, electrospray mass spectrometry) and toxicity of new organotin(IV) complexes withN,N′,O- andN,N′,S-scorpionate ligands

“…In this research field, several recent contributions are related to the heteroscorpionate ligand derived from bis(pyrazol-1-yl)methanes of general structure [RR C(pz) 2 coordinating moiety (R ) such as acetate, dithioacetate, sulfonate, ethoxide, phenolate, thiolate and other classes of moieties. 5 Otero et al 6 introduced for the first time the bis(3,5-dimethylpyrazol-1-yl)acetate, a scorpionate ligand with a carboxylate and two pyrazole donor groups. This ligand is analogous to poly(pyrazolyl)alkanes, but with a carboxylate fragment on the central carbon; it can be easily deprotonated and can act in the anionic form as a tripodal donor toward several metals, such as ruthenium, iron, zinc, niobium and titanium, where a κ 3 -N,N,O is proposed.…”