Synthesis, crystal and molecular structure of calcium oxo ethoxide, [Ca₆(µ₄-O)₂(µ₃-OEt)₄(OEt)₄]·14EtOH

Reactivity studies of phenylcalcium iodide towards THF yielding phenyl-free cage compounds – Crystal structures of [{(thf)Ca(O–CHCH2)2}4·CaO·CaI2] and [(CaO)4·4 (thf)3CaI2]

“…The Ca-O THF distances of 2.42(1) Å lie in the same expected range as observed for 1. Fused heterocubanes with a common face were found in a hexa-nuclear calcium oxide ethoxide, [Ca 6 (l 4 -O) 2 (l 3 -OEt) 4 (OEt) 4 ][31].Molecular structure and numbering scheme of[{(thf)Ca(O-CH@CH 2 ) 2 } 4 Á CaO Á CaI 2 ] (2) are displayed inFig. 2omitting the disordering of the vinylalcoholate for clarity reasons.…”

Study of Challenging Calcium Alkoxides in Solution by Electrospray Ionization Mass Spectrometry (Part 1)

“…The collision of [Ca 3 (OEt) 6 + H + ] gives rise to [Ca 3 (OEt) 5 ] + at m/z 344 and not to the dimeric or monomeric form. This result couldindicate that the trimer is in a stable six-membered cyclic structure.Interestingly, these trimeric and exameric species (see below) of calcium ethoxide have never been reported in previous investigations, where the calcium ethylates were indicated as Ca(OEt) 2 , as di-and tetra-solvated [Ca(OEt) 2 ·2EtOH] and [Ca(OEt) 2 ·4EtOH] and oxo-ethoxide 11. In the same way, it is…”

“…11,12 Method B: reaction through ammonia activation Synthesis of calcium alkoxides, involving ammonia gas-assisted reactions with the corresponding alcohol, were carried out in nitrogen-filled glove-boxes with the exclusion of moisture and oxygen according to procedures already described in the literature. 13 The reaction mixture of calcium methoxide (1) and calcium ethoxide, (2) obtained by both method A and Method B syntheses, materialize as a white suspension.…”

Mg6F2(OMe)10(MeOH)14—An Alkoxide Fluoride of an Alkaline Earth Metal

“…Indeed, if no HF is 4 (OMe) 4-x (MeOH) 8+x ] x+ , consists of neutral cubane units (x = 0 with y = 2) [9] or of neutral (x = 0) and cationic (x = 4) cubane units with y = 3.5. [10] In contrast to the structures of the alkaline earth metal alkoxides, for which the hydrogen atoms could not be localized, [8][9][10] in the structure of 1, all hydrogen atoms could be localized and refined. The MeO groups could clearly be differentiated from the coordinated MeOH, and this fact allowed the contribution of hydrogen bonding to the stabilization of the structure to be made clear.…”

“…The whole hexanuclear dicationic complex, [Mg 6 (m 4 -F) 2 [7] The bridging arrangement of the metal atoms in 1 has been found in the structure of the calcium ethoxide [Ca 6 O 2 (OEt) 8 ]·14 EtOH, but in that case, the bridging is with m 4 oxygen atoms instead of fluorine atoms. [8] It is worth noting that both the Mg2 and Mg3 cubane fragments in the hexanuclear magnesium cage of compound 1 stem from the cubane structure of the reactant. Indeed, if no HF is 4 (OMe) 4-x (MeOH) 8+x ] x+ , consists of neutral cubane units (x = 0 with y = 2) [9] or of neutral (x = 0) and cationic (x = 4) cubane units with y = 3.5.…”