Syntheses and Structures of [CH2(NCnH2n)2]Mo(CO)4 (n = 4,5) Complexes with Bis(cycloamine) Ligands Easily Prepared from CH2Cl2

Kyran, Samuel J.; Sánchez, Sergio; Arp, Christopher J.; Darensbourg, Donald J.

doi:10.1021/acs.organomet.5b00396

Cited by 11 publications

(3 citation statements)

References 29 publications

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“…Similar types of reactions were reported with pyridine, pyrrole, carboxylic acids or aldehydes using DCM as methylene source for the construction of bis‐type molecules. Recently, Liu et al .…”

Section: Reaction Solvents As Precursors For the Installation Of Key supporting

confidence: 56%

Reaction Medium as the Installing Reservoir for Key Functionalities in the Molecules

2019

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The solvent is an important entity in a chemical reaction, generally, required for the effective collision of the reactant molecules. By looking at the chemical nature, physic-chemical properties, and more importantly, smart selection, reaction solvents attract synthetic chemists for their effective use as reagents in a chemical reaction. For the installation of small key functionalities in the molecules, reaction solvents provide attractive, atom-economical, greener, and also less costly alternatives to other reagent-based strategies. For instance, particular reaction solvents can serve as a multipurpose building block for various units, such as O,

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Section: Reaction Solvents As Precursors For the Installation Of Key supporting

confidence: 56%

Reaction Medium as the Installing Reservoir for Key Functionalities in the Molecules

2019

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“…54,57 Even during the chelation of cyclic diamines to metal carbonyls, the two N atoms displace the CO from cis positions, which only results in a slight distortion in the overall octahedral geometry. 58 To support this idea that OLA forms an intermediate or new complex with W(CO) 6 with a local, octahedral symmetry, we also looked into the coordination reactions of OLA with W(CO) 6 by DFT (Section S10 in the Supporting Information). The high reaction temperature and inert atmosphere of the reaction flask help drive the endothermic formation of W(CO) 6−x (OLA) x species, which remains quasi-octahedral.…”

Section: T H I S C O N T E N T Imentioning

confidence: 99%

Synthesis of Colloidal WSe₂ Nanocrystals: Polymorphism Control by Precursor-Ligand Chemistry

Zhou

Schiettecatte

Vandichel

et al. 2021

Crystal Growth & Design

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Syntheses of transition-metal dichalcogenides (TMDs) using colloidal-chemistry approaches are gaining significant interest in recent years, as these methods enable the morphology and properties of the nanocrystals to be tuned for targeted applications. In this work, by only varying the ligand used during synthesis, we synthesized nanoflowers with oleic acid (OA) and 1T′ phase dominated WSe2 nanosheets with oleylamine (OLA). WSe2 nanocrystals show slower rate of formation for the metastable 1T′ phase. Surface chemistry analyses of the synthesized nanocrystals by solution NMR establish that neither of the ligands bind strongly to the surface of nanocrystals but are in a dynamic coordination with the WSe2 surface. A further examination of the coordination of tungsten hexacarbonyl (W(CO)6) with the respective ligands confirms that W(CO)6 decomposes in OA, losing its octahedral symmetry, which leads to fast reactivity in the flask. In contrast to this, W(CO)6 reacts with OLA to form a new complex, which leads to slower reactivity and crystallization of the synthesized nanocrystals in the octahedral 1T′ phase. These insights into the influence of precursor-ligand chemistry on reaction outcome and the peculiar surface chemistry of colloidal TMD nanocrystals will be instrumental in developing future colloidal TMD nanocrystals.

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“… 43 Dipyrrolidylmethane CH 2 (pyr) 2 and dipiperidylmethane, CH 2 (pip) 2 were synthesized via the condensation of the secondary amine precursors and DCM at room temperature in the absence of light. 44 Another reaction of amines with methylene chloride yielded aminals rapidly. 45 Matsumoto et al reported the reaction of DCM with ketones or esters in the presence of secondary amines at high pressure whereby DCM was used as methylene bridge in forming both C–C and C–N bonds.…”

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confidence: 99%

Synthesis of novel 1,2,4-thiadiazinane 1,1-dioxidesviathree component SuFEx type reaction

et al. 2018

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Herein, we report the preparation of 1,2,4-thiadiazinane 1,1-dioxides from reaction of b-aminoethane sulfonamides with dichloromethane, dibromomethane and formaldehyde as methylene donors. The baminoethane sulfonamides were obtained through sequential Michael addition of amines to a,bunsaturated ethenesulfonyl fluorides followed by further DBU mediated sulfur(VI) fluoride exchange (SuFEx) reaction with amines at the S-F bond.Scheme 3 Formation of 1,2,4-thiadiazinane 1,1-dioxides under onepot conditions in DCM or using a two-step procedure with other methylene donors for cyclization. a (One pot) 10 equiv. amine, 50 mol% DBU, 5.0 ml DCM, reflux; b b-aminoethane sulfonamide, 20 mol% DBU, 5 ml DCM, reflux; c b-aminoethane sulfonamide, cat. acetic acid, 1.1 equiv. CH 2 O, 3 ml EtOH or MeOH microwave 90 C, 200 W, 5 min; d baminoethane sulfonamide, 20 mol% DBU, 5 ml DBM, reflux. Note for b-d, the yield refers to the final step.This journal is

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Syntheses and Structures of [CH₂(NC_nH_2n)₂]Mo(CO)₄ (n = 4,5) Complexes with Bis(cycloamine) Ligands Easily Prepared from CH₂Cl₂

Cited by 11 publications

References 29 publications

Reaction Medium as the Installing Reservoir for Key Functionalities in the Molecules

Reaction Medium as the Installing Reservoir for Key Functionalities in the Molecules

Synthesis of Colloidal WSe₂ Nanocrystals: Polymorphism Control by Precursor-Ligand Chemistry

Synthesis of novel 1,2,4-thiadiazinane 1,1-dioxidesviathree component SuFEx type reaction

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Syntheses and Structures of [CH2(NCnH2n)2]Mo(CO)4 (n = 4,5) Complexes with Bis(cycloamine) Ligands Easily Prepared from CH2Cl2

Cited by 11 publications

References 29 publications

Reaction Medium as the Installing Reservoir for Key Functionalities in the Molecules

Reaction Medium as the Installing Reservoir for Key Functionalities in the Molecules

Synthesis of Colloidal WSe2 Nanocrystals: Polymorphism Control by Precursor-Ligand Chemistry

Synthesis of novel 1,2,4-thiadiazinane 1,1-dioxidesviathree component SuFEx type reaction

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Syntheses and Structures of [CH₂(NC_nH_2n)₂]Mo(CO)₄ (n = 4,5) Complexes with Bis(cycloamine) Ligands Easily Prepared from CH₂Cl₂

Synthesis of Colloidal WSe₂ Nanocrystals: Polymorphism Control by Precursor-Ligand Chemistry