This work developed three high-nuclearity {Co14} clusters of C1–C3 with inner [Co8] backbone fixed by six ambient CoCl2 species. The catalyst C1 exhibited highly regio- and stereoselective hydrosilylation of alkynes with primary and secondary silane to produce α-vinylsilanes. More importantly, C1 shows high regioselectivity for electronically unbiased alkyl alkynes, and the α-selectivity of some alkyl alkynes has not been achieved in previous reports. Leaching tests and reusability proved that the reaction is a heterogeneous process.

An unprecedented inner [Mn18(CO3)9] inorganic core and [Mn20] metal-organic periphery compose the high-nuclearity homometallic single-valent {MnⅡ38} molecular aggregate with [Mn6]⊂[Mn12]⊂[Mn8]⊂[Mn12] matryoshka doll-like skeleton that displays a significant magnetocaloric effect (MCE).

In the present study, 2D Co(II) coordination polymers (CP-1), which integrate terminal CoBr n (CoBr 2 and CoBr 3 ) sites immobilized on the framework, are synthesized at the gram level. As a special heterogeneous catalyst, CP-1 shows regioselectivity (β:α > 99:1) and stereoselectivity (only E configuration) in the hydroboration of alkynes. The hydroboration reaction conditions are mild and cover a broad substrate range (31 examples). In addition, the heterogeneous catalyst can be recycled for at least five times.

It is important to develop sensors that can be easily fabricated for the detection of harmful industrial wastes and nitroaromatic explosives to reduce the risks to human health and protect the environment. We report a new luminescent metal-organic framework (MOF), [Zn 5 (μ 3 -OH) 2 (TDA) 4 (4,4 0 -bpt) 2 ]n (1), (4,4 0 -bpt = 1H-3,5-bis-(4-pyridyl)-1,2,4-triazole, H 2 TDA = thiophene-2,-5-dicarboxylic acid), which was synthesized under solvothermal conditions and characterized using the PXRD, IR, TG, ICP-MS, mapping, and PL spectroscopic techniques. The {Zn 5 } MOF of (1) with Zn 5 cluster as the node, and 4,4 0bpt and TDA 2À as linkers, exhibited excellent thermal and chemical stabilities.Furthermore, 1 can serve as a sensitive and recyclable luminescent probe for the detection of Ag + , Cr 2 O 7 2À , and TNP with detection limits of 5.96, 4.34, and 1.59 μM, respectively.

A robust Co(ii) MOF with high stability was prepared to promote the azide–alkyne cycloaddition reaction, Friedel–Crafts reactions of indoles and hydrosilylation reactions of alkynes.