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Two organically templated beryllium phosphite and phosphate, [H2tmpda][Be3(HPO3)4] ( 1) and [H2ampy][Be3(HPO4)4] ( 2) [tmpda = N,N,N′,N′-tetramethyl-1,3-propanediamine, ampy = 3-(aminomethyl)pyridine], were synthesized and structurally characterized. Compound 1 exhibits a (3,4)-connected layered structure with eight-ring windows, and it has a 44 grid topology by regarding the heptameric [Be3(HPO3)4] group as a 4-connected node in the layer. Compound 2 possesses a different (3,4)-connected three-dimensional framework with multidirectional 8-ring channels and zigzag 12-ring channels. This 3D architecture shows a pcu topology when the heptameric [Be3(HPO4)4] groups are regarded as 6-connected secondary building units. Crystal data: 1, monoclinic, P21/ m, a = 8.0217(6) Å, b = 13.7969(5) Å, c = 8.6581(2) Å, β = 92.315(3)°, V = 957.45(8) Å3, Z = 2, R1 = 0.0761, wR2 = 0.1640; 2, monoclinic, P21/ n, a = 7.5292(5) Å, b = 14.0999(8) Å, c = 16.5910(3) Å, β = 95.740(3)°, V = 1752.49(16) Å3, Z = 4, R1 = 0.0434, wR2 = 0.1017. [ABSTRACT FROM AUTHOR]

Abstract: Employing the common pyridine (=py) solvent as the source of structure-directing agents (SDAs), a novel three-dimensional open-framework beryllium phosphite (Hpy)4[Be6(HPO3)8]·H2O (1), has been solvothermally synthesized and structurally characterized by IR, elemental analysis, thermogravimetric analysis, powder and single-crystal X-ray diffractions. It crystallizes in the orthorhombic system, space group Pbca (No. 61), a = 20.0034(4) Å, b = 20.2188(4) Å, c = 20.9731(3) Å, V = 8482.5(3) Å3, and Z = 8. The alternating connection of BeO4 tetrahedra and HPO3 pseudopyramids give rise to a (3, 4)-connected network with multidirectional intersecting 12-ring channels. The compound possesses a low density and a new {4.8.10}{42.6.8.10.12}{42.6}3{42.8.102.12}{43.62.8} topology. [Copyright &y& Elsevier]

Abstract: A novel 3d-4f heterometallic coordination polymer, {[Tm5(μ3-OH)2(BDC)6(IN)2Cu(H2O)2]·(H2O)3}n (1) [BDC = benzene-1,2-dicarboxylate, IN = isonicotinate], has been hydrothermally synthesized and structurally characterized by single crystal X-ray diffraction, FTIR, elemental analysis, powder X-ray diffraction and thermogravimetric analysis. The compound crystallizes in monoclinic system, space group P21 /c (No. 14), a = 13.7302(5) Å, b = 23.5428(3) Å, c = 21.5789(2) Å, β = 91.491(3)°, V = 6973.0(3) Å3, and Z = 4. The structure exhibits unusual two-dimensional Tm-carboxylate layer, which is constructed from the expansion of novel pentanuclear {Tm5} clusters. More interestingly, the heterometallic Cu(I) ions were successfully planted into such Ln-carboxylate layer by the bifunctional IN bridging ligands, resulting in the formation of an unprecedented 2D heterometallic lanthanide-transition-metal framework. [Copyright &y& Elsevier]

Employing diethylenetriamine (=dien) as a structure-directing agent, a new open-framework beryllium phosphite H2dien·Be3(HPO3)4 (1), has been synthesized hydrothermally and structurally characterized by single crystal X-ray diffraction. The structure of 1 features a (3, 4)-connected framework with 8- and 12-ring channels, which is constructed from strictly alternating BeO4 tetrahedra and HPO3 2− pseudopyramids. The 3-D framework possesses a pcu topology when the heptameric [Be3(HPO3)4] clusters are regarded as 6-connected secondary building units. Crystal data: 1, monoclinic, C2/c (no. 15), a = 8.7350(3) Å, b = 15.1704(6) Å, c = 13.0851(4) Å, β = 101.223(5)°, V = 1700.79(10) Å3, Z = 4, R 1 = 0.0625, wR 2 = 0.1692. [ABSTRACT FROM AUTHOR]

Abstract: By using flexible 1,2-bis(2-aminoethoxy)ethane (BAEOE) as a pillaring ligand, a new inorganic–organic hybrid open-framework zinc phosphite, [C6N2O2H16][Zn(HPO3)]2 (1), has been hydrothermally synthesized and structurally characterized by IR, elemental analysis, thermogravimetric analysis, powder and single-crystal X-ray diffractions. The structure of 1 consists of neutral layers of zinc phosphite which are further pillared through linear BAEOE ligands, generating a 3D framework with unusual (3, 4)-connected dmc topology. The participation of left-handed and right-handed helical chains in the construction of puckered sheet structure with 4.82-net is also noteworthy. [Copyright &y& Elsevier]

Abstract: Two new three-dimensional open-framework zinc phosphites, [HCHA]2[Zn3(HPO3)4] (1) and [HCHPA]2[Zn3(HPO3)4] (2), have been synthesized under hydrothermal conditions, where CHA = cyclohexylamine and CHPA = cycloheptylamine. Both compounds are isostructural and exhibit a similar three-dimensional 3, 4-connected framework constructed by strictly alternating ZnO4 tetrahedra and pseudopyramids. The occurrence of extra-large tubular channels constructed by the concatenation of 24- and 30-ring windows along the [001] direction in the two structures is very unusual in known extra-large micropore materials. Crystal data: 1, rhombohedral, R-3, a = 32.9618(5) Å, c = 13.2818(3) Å, V = 12497.1(4) Å3, Z = 18, R 1 = 0.0445, wR 2 = 0.1068; 2, rhombohedral, R-3, a = 33.2184(4) Å, c = 13.1697(6) Å, V = 12585.3(6) Å3, Z = 18, R 1 = 0.0401, wR 2 = 0.0974. [Copyright &y& Elsevier]

The hydrothermal reaction of zinc ions with 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) in the presence of additives such as 1,4-diazabicyclo[2.2.2]octane (DABCO), 1,3-propanediamine, imidazole and isonipecotic acid, afforded five metal phosphonates, namely, [H 2 DABCO]{Zn 3 [CH 3 C(OH)(PO 3 ) 2 ] 2 } ( 1 ), [C 3 H 14 N 2 ]{Zn 3 [CH 3 C(OH)(PO 3 ) 2 ] 2 } ( 2 ), [C 3 H 5 N 2 ] 2 {Zn 3 [CH 3 C(OH)(PO 3 ) 2 ] 2 } ( 3 ), {Zn 2 [CH 3 C(OH)(PO 3 ) 2 ][C 3 H 4 N 2 ] 2 } ( 4 ) and {Zn 2 [CH 3 C(OH)(PO 3 ) 2 ][C 6 H 11 NO 2 ] 2 [H 2 O] 2 }·H 2 O ( 5 ). Compounds 1 and 2 are isostructural and adopt a pillar-layered 3D structure. Compound 3 is a 3D framework in which [ZnO 4 ] tetrahedra are connected by HEDP molecules with tetradentate mode. The [ZnO 3 N] tetrahedra in 4 shares corners with the [CPO 3 ] tetrahedra into a 3D framework with twelve-membered ring. It is also found that 4 displays interesting left-handed helical chains along [100] direction. In 5 , HEDP molecules exhibit tetradentate coordination fashion to combine Zn atoms into a complicated 2D hybrid layer, resulting in the coordinated isonipecotic acid rings being sandwiched between the layers. All the compounds have been characterized by infrared spectra (IR), elemental analyses, powder X-ray diffraction (PXRD) and thermogravimetric (TG) analyses. [ABSTRACT FROM AUTHOR]