Two Ni-Substituted Trilacunary Keggin-Type Polyoxometalates: Syntheses, Crystal Structures, NLO Studies, and Magnetic Properties.

Two Ni-substituted polyoxometalates (NiSPs), [Ni(Py)(HO)(μ-OH)(PWO)]·10HO (), [Ni(Py)(Im)(HO)O(WO)(μ-OH)(HPWO)]·3HO () (Py = pyridine, Im = imidazole), were successfully hydrothermally synthesized. Compounds and have significantly different configurations by introducing different amounts of imidazole ligands. For compound , two malposed {Ni(Py)PW} units that are face to face are bridged by two Ni-O-W bonds to constitute an isolated dimeric structure.

Microecological preparation combined with an modified low-carbon diet improves glucolipid metabolism and cardiovascular complication in obese patients.

Objective: To investigate the impact of microecological preparation combined with modified low-carbon diet on the glucolipid metabolism and cardiovascular complication in obese patients.

Methods: From August 2017 to July 2020, 66 obese patients were recruited, and administrated with an modified low-carbon diet with (group A) or without (Group B) microecology preparation and a balanced diet in control group (group C) for 6 months. Meanwhile, 20 volunteers administrated with a balanced diet were recruited as the healthy control group (group D).

Two three-dimensional polyanionic clusters [M(PMo)] (M = Co, Zn) exhibiting excellent photocatalytic CO reduction performance.

Two captivating {P4Mo6}-based compounds, formulated as (H2bbi)2{[Co2(bbi)][Co2.33(H2O)4][H9.33CoP8Mo12O62]}·4H2O (1) and (H2bbi){[Zn(Hbbi)]2[Zn0.

Two Polyoxometalate-Based Hybrid Compounds Modified by Iron Schiff Base Complexes: Syntheses, Crystal structures, Cyclic Voltametric Studies and Nonlinear Optical Properties.

Two new polyoxometalate (POM)-based hybrid compounds modified by a Schiff base, [Fe(DAPSC)(H O) ] [HPMo Mo O ] ⋅ 5H O (1) and [Fe(DAPSC)(H O)] [HPV Mo Mo O ] ⋅ 6H O (2), (DAPSC=2,6-diacetylpyridine bis-(semicarbazone)), have been successfully constructed from typical Keggin POMs, iron ions, and DAPSC ligands under hydrothermal condition. Structural analysis demonstrates that the Fe-Schiff base ligand units are free from polyacid anions in compound 1. While in compound 2, the Fe-Schiff base ligand units are bridged with polyacid anions via Fe-O bonds to emerge a stable double-supported skeleton.

Synthesis, crystal structures and magnetic properties of two heterometallic {LnCr} (Ln = Gd and Tb) complexes with one-dimensional wave chain structure.

Two isomorphic heterometallic 3d-4f cluster-based materials, formulated [GdCr(IN)(μ-O)(μ-OH)(μ-O)(HO)]·13HO (1) and [TbCr(IN)(μ-O)(μ-OH)(μ-O)(HO)]·13HO (2) (abbreviation: {LnCr}: Ln = Gd (1); Tb (2); HIN = isonicotinic acid), were achieved by hydro-/solvothermal method through using the ligand HIN. X-ray diffraction analysis illustrates eight lanthanide ions (Ln = Gd, Tb) and four transition-metal ions (Cr) of {LnCr} were constructed from two classical "drum-like" {LnCr} structures associated by organic ligands HIN, displaying a one-dimensional wave chain structure, which is rare. The magnetic properties of {GdCr} were inspected and showed the existence of antiferromagnetic coupling interactions between contiguous metal ions.