2021
DOI: 10.3390/inorganics9040028
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Metal-Rich Metallaboranes: Synthesis, Structures and Bonding of Bi- and Trimetallic Open-Faced Cobaltaboranes

Abstract: Synthesis, isolation, and structural characterization of unique metal rich diamagnetic cobaltaborane clusters are reported. They were obtained from reactions of monoborane as well as modified borohydride reagents with cobalt sources. For example, the reaction of [Cp*CoCl]2 with [LiBH4·THF] and subsequent photolysis with excess [BH3·THF] (THF = tetrahydrofuran) at room temperature afforded the 11-vertex tricobaltaborane nido-[(Cp*Co)3B8H10] (1, Cp* = η5-C5Me5). The reaction of Li[BH2S3] with the dicobaltaoctabo… Show more

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Cited by 5 publications
(5 citation statements)
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“…Thus, we have used thin layer chromatography (TLC) that allowed us to perform the characterizations both spectroscopic and structural of the pure material of 2 . The reaction also yielded some low yielded cobaltaboranes, VI , VII , and VIII , reported earlier by Grimes and us …”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…Thus, we have used thin layer chromatography (TLC) that allowed us to perform the characterizations both spectroscopic and structural of the pure material of 2 . The reaction also yielded some low yielded cobaltaboranes, VI , VII , and VIII , reported earlier by Grimes and us …”
Section: Resultsmentioning
confidence: 99%
“…Having isolated several such cobaltaboranes by others and us, we aspired to parallelize their spectroscopic and structural data. Table listed such types of clusters that contrast the structural data and 11 B chemical shifts with formal electron counts of 12 SEPs …”
Section: Resultsmentioning
confidence: 99%
“…The reactions progressed with a change in color from red to brown leading to the formation of di- and trichalcogenate-bridged heterobimetallic MnCo complexes 1–6 , albeit in poor yields. Note that, in addition to 1–6 , the reactions also yielded known (hyper) nido -[(Cp*Co) 3 B 8 H 10 ] and few other species that could not be isolated due to lower yields. It should also be mentioned here that the reaction with Li­[BH 3 TePh] afforded compounds that were sensitive to air and moisture, in poor yields, and hence, we were unable to isolate them.…”
Section: Resultsmentioning
confidence: 99%
“…The solid residue underwent chromatographic workup on TLC plates {elution with n -hexane/CH 2 Cl 2 [60:40 (v/v)]} after the volatiles had been removed from the filtrate. This afforded violet 1 (0.056 g, 10%), green 2 (0.069 g, 11%), and orange 3 (0.012 g, 3%) along with (hyper) nido -[(Cp*Co) 3 B 8 H 10 ] and a few low-yield products that could not be isolated.…”
Section: Methodsmentioning
confidence: 99%
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