Synthesis and Structural Characterization of a Halide-Free Rhombohedral Silver-Alkynyl Cage Complex [Ag14(C2tBu)12][BF4]2 Omar

The novel cationic complex [Ag14(C2tBu)12]2+ has been synthesized
by four reactions: reaction of [Ag(C2tBu)]n and
AgBF4 in acetone in a 6:1 mole ratio, that of HCCtBu and
AgBF4 in water in the absence of a base, treatment of
[AgC2tBu]n with HBF4 in acetone or that of {[Ag3(C2tBu)2]-
Introduction
Since the pioneering work of Nast[1] on acetylide complexes,
dramatic developments in the field, parallel to the
advances in organometallic chemistry, have been accomplished.
The versatile mode of bonding of the alkynyl

Computational and Spectral Investigation of 5,12-Dihydro-5,12-ethanonaphthacene-13-carbaldehyde

Abstract: A conformational search of 5,12-dihydro-5,12-ethanonaphthacene-13-carbaldehyde
predicted the presence of twelve conformations. The geometry of the twelve conformations
established at the B3LYP/6-31G* level showed only six unique ones. Vibrational
frequencies were calculated at the B3LYP/6-31G* level. The calculated vibrational
frequencies enabled us to interpret the appearance of two bands corresponding to the C=O
stretching mode of 5,12-dihydro-5,12-ethanonaphthacene-13-carbaldehyde. The first band

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