resumo
Crystalline polyoxovanadates (POVs) are a subclass of polyoxometalates with significance in chemical, physical and materials sciences. Recent studies revealed that the condensation of vanadate and borate fragments may yield a whole new class of POVs. These novel vanadoborates are typically prepared by high-temperature solid-state, boric acid flux or low-temperature hydrothermal techniques. The different connections of [VOx] (x = 4, 5, 6) and [BOx] (x = 3, 4) polyhedral units ultimately result in a fascinating variety of vanadoborate anionic clusters, which can be at the genesis of a myriad of one-dimensional (1-D), two-dimensional (2-D) and three-dimensional (3-D) polymeric architectures by way of either self-condensation or by forming covalent bonds with other metal ions or unsaturated metal complexes. This review summarizes, in a systematic structural approach, the most striking advances in the syntheses, structural features, and some properties of crystalline vanadoborates based on different [VxBy] and [VxByPz] clusters. It intends to provide meaningful and helpful guidance for the future preparation of new and functional vanadoborates.
palavras-chave
NONLINEAR-OPTICAL CRYSTAL; FRAMEWORK COPPER BOROVANADATE; GROUP OXIDE CLUSTER; HYDROTHERMAL SYNTHESIS; STRUCTURAL-CHARACTERIZATION; VANADIUM BOROPHOSPHATE; POLYOXOVANADIUM BORATE; PROTON CONDUCTION; OXIDATION; CONSTRUCTION
categoria
Chemistry, Inorganic & Nuclear
autores
Liu, X; Zhou, J; Amarante, TR; Paz, FAA; Fu, LS
nossos autores
Filipe Alexandre Almeida Paz
Investigador Principal
Lianshe Fu
Investigador Auxiliar
Tatiana Ribau Amarante
Investigador Júnioragradecimentos
This work was supported by the NNSF of China (No. 21671029), the NSF of Chongqing (No. cstc2018jcyjAX0157), the Program for Leading Talents of Scientific and Technological Innovation in Chongqing (No. CSTCCXLJRC201707), innovation and entrepreneurship team of inorganic optoelectronic functional materials for Chongqing Yingcai (No. CQYC2020030920) and the Innovation Program for Chongqing's Overseas Returnees (No. cx2019037). Part of this work was developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020 & UIDP/50011/2020, financed by national funds through the FCT/MEC and when appropriate co-financed by FEDER under the PT2020 Partnership Agreement. The positions held by T. R. A. and P. N. were funded by national funds (OE), through FCT, I. P., in the scope of the framework contract foreseen in the numbers 4, 5 and 6 of article 23 of the Decree-Law 57/2016 of 29 August, changed by Law 57/2017 of 19 July.