Structures and Magnetic Properties of a Series of Metal Phosphonoacetates Synthesized from in Situ Hydrolysis of Triethyl Phosphonoacetate

Abstract

Seven new metal phosphonoacetates, namely, [Zn 7 (OH) 2 (ppat) 4 (H 2 O) 2 ] (1), H 3 O[Zn(ppat)] (2), [Zn 3 (4,4′-bpy) 6), and [Fe III (ppat)(H 2 O)] (7) (H 3 ppat ) phosphonoacetic acid, 4,4′-bpy ) 4,4′-bipyridine, dmpz ) N,N′-dimethylpiperazine) were hydrothermally synthesized by the in situ hydrolysis of triethyl phosphonoacetate route. X-ray crystallography reveals that 1 shows a two-dimensional layered structure containing octahedral, tetrahedral, and trigonal bipyramidal Zn sites and an unprecedented inorganic Zn-O ribbon; 2 has a threedimensional framework with one-dimensional dumbbell-shaped channels encapsulating protonated water molecules; 3 is a neutral three-dimensional framework constructed by [Zn(4,4′-bpy)] n 2n+ chains and [Zn(ppat)] n nlayers, two types of structural motifs; 4 shows a three-dimensional hydrogen bond network constructed by [Zn(ppat)]anionic layers and N,N′-dimethylpiperazinium cations; 5 is a layered structure containing inorganic Co-O chains consisting of edge-shared CoO 6 octahedra; 6 has a 3D hydrogen bond array constructed from [V 2 O 2 (ppat)] n 2nlayers and doubly protonated 4,4′-bpy cations; 7 crystallizes in a chiral space group and has a 3D four-connected framework with diamond topology. Magnetic measurements reveal antiferromagnetic behavior for 5, paramagnetic behavior for 6, and canted antiferromagnetic behavior for 7.

A three-dimensional highly stable Zn(II) coordination polymer based on 1,4-benzeneditetrazolate (H2BDT): Synthesis, crystal structure, and luminescent properties

“…Therefore, the 3D metalorganic framework of 2 belongs to a 4,4-c net, with the topological type of unc and Schläfli symbol of {6 6 } (Fig. 3c), which was also found in other reported coordination polymers [20].…”

Synthesis and Characterization of 1‐, 2‐, and 3‐Dimensional Bimetallic UO22+/Zn2+ Phosphonoacetates

“…In related transition metal systems, the hydrolysis of di-and trialkyl phosphonates has similarly been used to prepare a variety of transition metal carboxyphosphonates. [50][51][52][53] In these systems, the phosphonate ligands were generated in situ for the purpose of: (1) removing the need to synthesize the acid form of the ligand and (2) gradually introducing the ligand and thus yielding crystals sufficiently large for single-crystal X-ray diffraction.…”

Hydro(solvo)thermal synthesis, structures, luminescence of 2-D zinc(ii) and 1-D copper(ii) complexes constructed from pyridine-2,6-dicarboxylic acid N-oxide and decarboxylation of the ligand

“…It has become a forceful and promising approach in crystal engineering of coordination complexes, especially for those not accessible from a direct reaction of metal ions and ligands. [20][21][22][23][24][25][26][27][28] More than 10 types of in situ ligand reactions have been reviewed by Zhang and Chen recently, 20,28 hydrothermal decarboxylation being one of the reactions also observed by several authors. [29][30][31][32] However, the decarboxylation of free carboxylic acids is often difficult, except for some activated acids such as aryl carboxylic acid.…”