Synthesis and Characterization of a Chiral 3D-Framework Material:  d-Co(en)₃[H₃Ga₂P₄O₁₆]

Abstract

A chiral material, d-Co(en) 3 [H 3 Ga 2 P 4 O 16 ] (en ) 1,2-diaminoethane), with a three-dimensionally connected framework has been prepared hydrothermally, using optically pure d-Co-(en) 3 3+ as a structure directing agent, and the structure characterized by X-ray diffraction. Aluminum-containing analogues of this material have also been synthesized. The material can be thought of as a diamondlike network, consisting of tetrahedrally coordinated gallium sites linked by doubly bridging phosphates, with the metal complex sitting in the interstices.Ga 1.25 Al 0.75 P 4 O 16 ], M r ) 729.51, monoclinic, I2, a ) 9.567(1)Å, b ) 12.6923-(5)Å, c ) 9.9241(5)Å, β ) 97.601( 8) o , Z ) 2, F calc ) 2.028 g cm -3 , F obs ) 2.08 g cm -3 , Cu KR, R F ) 0.026.

Open-Framework Inorganic Materials

“…Different tris(diamine) cobalt(iii) complexes have been tested and a few chiral layered aluminophosphates have already been reported. [83,84] Only one three-dimensional framework gallophosphate has been obtained with such cobalt complexes [85] and consists of a diamondlike network composed of tetrahedral [GaO 4 ] units linked to [PO 4 ] units. The complex remains intact during the reaction and is found trapped within the pores.…”

A Series of Open‐Framework Aluminoborates Templated by Transition‐Metal Complexes

“…[14] In employing CMCs as the templates, a number of metal phosphates and germanates have been made, as exemplified by gallium phosphates, [15] zincophosphates, [14c, 16] aluminophosphates, [17] borophosphates, [18] zinc germanates, [19] and nickel germanates.…”

[{Zn2(HPO4)4}{Co(dien)2}]⋅H3O: A Zinc Phosphate with Multidirectional Intersecting Helical Channels

“…[11] Employing chiral metal complexs as templating agents has proven to be a possible approach to induce a chiral environment in the host framework. [12] Several metal phosphates templated by an optically pure or a racemic mixture of chiral metal complexes have been reported, including aluminophosphates, [12][13][14][15][16] gallium phosphates [{d-Co(en) 3 }{H 3 Ga 2 P 4 O 16 }] [17] (en = ethylenediamine) and [{Co(en) 3 }{Ga 3 (H 2 PO 4 ) 6 -(HPO 4 ) 3 }], [18] boron phosphate [{Co(en) 3 }{B 2 P 3 O 11 (OH) 2 }], [19] and . Each asymmetric unit contains two unique Zn atoms that reside on the twofold symmetry axis, two unique P atoms in general positions, and one Co atom, also located on the twofold axis.…”