A ladder type structure: Rubidium diphenylacetate diphenylacetic acid

Abstract

A new rubidium complex, rubidium diphenylacetate diphenylacetic acid has been synthesised and characterised by single-crystal X-ray diffraction: triclinic, P1 with a = 7.437(3)Å, b = 12.377(4)Å, c = 14.384(3)Å, α = 107.08(2) • , β = 103.67(2) • , γ = 96.95(3) • , Mr = 508.93, V = 1203.6(6)Å 3 , Z = 2. The diphenylacetic molecules bridge the metallic ions forming an infinite ladder structure. Two strong hydrogen bonds link the organic moieties.

Propeller-like Conformation of Diphenylacetic Acid

“…The two phenyl groups are in the outside of the columns and are oriented like the blades of a propeller. Preliminary results on potassium diphenylacetate show the same formation of columns while the rubidium diphenylacetate crystal structure has less symmetry giving rise to the formation of ladders instead of columns [3].…”

Guest packing in channel coordination polymers

“…It also presents fundamental challenges to understand and predict reactivity under such conditions. We are developing the efficient synthesis of microporous metal-organic frameworks (MOFs) by grinding metal salts and bridging organic ligands in ball mills under solvent-free conditions [1][2][3]. Remarkably, in some case these materials can be obtained by this method in crystalline form within minutes and in quantitative yield.…”

“…MIL-53(Al), [Al(OH)(bdc)], is a member of a huge family of porous CPs based on chains of trans-corner sharing octahedral units {MO 6 } cross-linked by bdc (terephtalic acid) which results in a 3D structure exhibiting 1D channels along the a axis. Therephtalic acid, methylbenzyl, dimethylbenzyls, ferrocene (Fc) [3], ferrocenealdegid (Fca), 1,1'ferrocenedialdegide (Fcaa), 1,1'-dimethilferrocene (Fcee) and 1,1'-diethilferrocene (Fcmm) were selected as a test guest molecules; also structural effects of the substitute group in the guest molecule were investigated. Our structural data were compared with known literature examples [1,4].…”

“…[2] Our group has reported two types of flexible MOFs built either on chains of metal octahedra, i.e. the metal terephthalates MIL-53(Al, Cr, Fe) (MIL: Material Institut Lavoisier), [3] or made from trimeric inorganic sub-units, i.e. the series of iron(III) or chromium(III) carboxylates denoted MIL-88A, B, C and D and constructed from fumaric acid (MIL88-A), 1,4-BDC (MIL88-B), 2,6-NDC (MIL88-C) and 4,4'-BPDC (MIL88-D).…”

Columnar Formation in Sodium Triphenylacetate

“…ion is coordinated by four carboxylate O atoms to form cubes of Na and O atoms, which are linked via the acidic carboxylate groups into a columnar structure that runs along a rotoinversion axis. In a related compound, rubidium diphenylacetate diphenylacetic acid [3], the diphenylacetic molecules bridge the metallic ions forming an infinite ladder structure. That has encouraged us to try to synthesize sodium triphenylacetate, in expectation that a one-dimensional structure could be formed within the crystalline structure and that a mesophase could be induced by increasing the temperature.…”