Category: 624-73-7

Rodrigues Silva, Daniela; de Azevedo Santos, Lucas; Hamlin, Trevor A.; Fonseca Guerra, Celia; Freitas, Matheus P.; Bickelhaupt, F. Matthias published their research in ChemPhysChem in 2021. The article was titled 《The Gauche Effect in XCH2CH2X Revisited》.SDS of cas: 624-73-7 The article contains the following contents:

We have quantum chem. investigated the rotational isomerism of 1,2-dihaloethanes XCH2CH2X (X = F, Cl, Br, I) at ZORA-BP86-D3(BJ)/QZ4P. Our Kohn-Sham MO (KS-MO) analyses reveal that hyperconjugative orbital interactions favor the gauche conformation in all cases (X = F-I), not only for X = F as in the current model of this so-called gauche effect. We show that, instead, it is the interplay of hyperconjugation with Pauli repulsion between lone-pair-type orbitals on the halogen substituents that constitutes the causal mechanism for the gauche effect. Thus, only in the case of the relatively small fluorine atoms, steric Pauli repulsion is too weak to overrule the gauche preference of the hyperconjugative orbital interactions. For the larger halogens, X···X steric Pauli repulsion becomes sufficiently destabilizing to shift the energetic preference from gauche to anti, despite the opposite preference of hyperconjugation. The results came from multiple reactions, including the reaction of 1,2-Diiodoethane(cas: 624-73-7SDS of cas: 624-73-7)

1,2-Diiodoethane(cas: 624-73-7) is one of organic iodides. Alkyl iodides react at a faster rate than alkyl fluorides due to the weak C-I bond. Iodo alkanes participate in a variety of organic synthesis reactions, which include the Simmons–Smith reaction (cyclopropanation using iodomethane), Williamson ether synthesis, Wittig reaction, Grignard reaction, alkyl coupling reactions, and Wurtz reaction.SDS of cas: 624-73-7

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

《The Reactivity of Phosphanylphosphinidene Complexes of Transition Metals Toward Terminal Dihaloalkanes》 was written by Ordyszewska, Anna; Szynkiewicz, Natalia; Chojnacki, Jaroslaw; Pikies, Jerzy; Grubba, Rafal. Safety of 1,2-Diiodoethane And the article was included in Inorganic Chemistry in 2020. The article conveys some information:

The reactivities of phosphanylphosphinidene complexes [(DippN)2W(Cl)(η2-P-PtBu2)]- (1), [(pTol3P)2Pt(η2-P:PtBu2)] (2), and [(dppe)Pt(η2-P:PtBu2)] (3) toward dihaloalkanes and Me iodide were investigated. The reactions of the anionic tungsten complex (1) with stoichiometric Br(CH2)nBr (n = 3, 4, 6) led to the formation of neutral complexes with a tBu2PP(CH2)3Br ligand or neutral dinuclear complexes with unusual tetradentate tBu2PP(CH2)nPPtBu2 ligands (n = 4, 6). The methylation of platinum complexes 2 and 3 with MeI yielded neutral or cationic complexes bearing side-on coordinated tBu2P-P-Me moieties. The reaction of 2 with I(CH2)2I gave a platinum complex with a tBu2P-P-I ligand. When the same dihaloalkane was reacted with 3, the P-P bond in the phosphanylphosphinidene ligand was cleaved to yield tBu2PI, phosphorus polymers, [(dppe)PtI2] and C2H4. Furthermore, the reaction of 3 with Br(CH2)2Br yielded dinuclear complex bearing a tetraphosphorus tBu2PPPPtBu2 ligand in the coordination sphere of the platinum. The mol. structures of the isolated products were established in the solid state and in solution by single-crystal x-ray diffraction and NMR spectroscopy. DFT studies indicated that the polyphosphorus ligands in the obtained complexes possess structures similar to free phosphenium cations tBu2P+:P-R (R = Me, I) or (tBu2P+:P)2. The phosphanylphosphinidene complexes of tungsten and platinum as building blocks for syntheses of polydentate phosphorus ligands. In the experiment, the researchers used 1,2-Diiodoethane(cas: 624-73-7Safety of 1,2-Diiodoethane)

1,2-Diiodoethane(cas: 624-73-7) is one of organic iodides. The carbon-iodine bond is weaker than other carbon-halogen bonds due to the poor electronegative nature of the iodine atom. In general, organic iodides are light-sensitive and turn yellow during storage, owing to the formation of iodine. Organic iodides can be alkyl, alkenyl, or alkynyl, and all of them are very reactive toward with many kinds of nucleophiles.Safety of 1,2-Diiodoethane

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

In 2018,Dalton Transactions included an article by Reiners, Matthias; Maekawa, Miyuki; Baabe, Dirk; Zaretzke, Marc-Kevin; Schweyen, Peter; Daniliuc, Constantin G.; Freytag, Matthias; Raeder, Jan; Hohenberger, Johannes; Sutter, Joerg; Meyer, Karsten; Walter, Marc D.. Category: iodides-buliding-blocks. The article was titled 《Monomeric Fe(III) half-sandwich complexes [Cp’FeX2] – synthesis, properties and electronic structure》. The information in the text is summarized as follows:

The half-sandwich complex [Cp’Fe(μ-I)]2 (1; Cp’ = η5-1,2,4-(Me3C)3C5H2) is cleaved when heated in toluene to form a cation-anion pair [{Cp’Fe(η6-toluene)}+{Cp’FeI2}-] (2), in which the two Fe(II) atoms adopt different spin states, i.e., a low-spin (S = 0) and a high-spin (S = 2) configuration. Upon oxidation of 1 with C2H4I2, the thermally stable 15VE species [Cp’FeI2] (3) can be isolated, in which the Fe(III) atom adopts an intermediate spin (S = 3/2) configuration. Complex 3 is an excellent starting material for further functionalizations and it reacts with Mg(CH2SiMe3)2 to form the unprecedented Fe(III) (S = 3/2) bis(alkyl) complex [Cp’Fe(CH2SiMe3)2] (4). The resp. spin states of complexes 2-4 are confirmed by single-crystal x-ray crystallog., zero-field 57Fe Mossbauer spectroscopy, and solid-state magnetic susceptibility measurements. In contrast to the related 14VE high-spin (S = 2) Fe(II) alkyl species [Cp’FeCH(SiMe3)2], which resists the reaction with H2 as a consequence of a spin-induced reaction barrier, complex 4 reacts cleanly with H2 (8 bar) in cyclohexane to yield iron hydrides [{Cp’Fe}2(μ-H)3] (5) and [Cp’Fe(μ-H)2]2 (6) in a 1 : 4 ratio. However, when the hydrogenation of 4 is carried out in benzene, a green 19VE [Cp’Fe(η6-C6H6)] (A) intermediate is formed, which dimerizes to the bis(cyclohexadienyl)-bridged product [(Cp’Fe)2(μ2-η5:η5-C12H12)] (7). Further evidence for the intermediacy of [Cp’Fe(η6-C6H6)] (A) was gathered by X-band EPR and UV/vis spectroscopy. Interestingly, attempts to oxidize 7 with AgSbF6 proceeded via C-C bond cleavage instead of metal oxidation to form [Cp’Fe(C6H6)][SbF6] (8). After reading the article, we found that the author used 1,2-Diiodoethane(cas: 624-73-7Category: iodides-buliding-blocks)

1,2-Diiodoethane(cas: 624-73-7) is one of organic iodides. Alkyl iodides react at a faster rate than alkyl fluorides due to the weak C-I bond. Iodo alkanes participate in a variety of organic synthesis reactions, which include the Simmons–Smith reaction (cyclopropanation using iodomethane), Williamson ether synthesis, Wittig reaction, Grignard reaction, alkyl coupling reactions, and Wurtz reaction.Category: iodides-buliding-blocks

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Computed Properties of C2H4I2In 2022 ,《Optimizing functional layer of cation exchange membrane by three-dimensional cross-linking quaternization for enhancing monovalent selectivity》 appeared in Chinese Chemical Letters. The author of the article were Pan, Jiefeng; Zhao, Lei; Yu, Xiaohong; Dong, Jiajing; Liu, Lingling; Zhao, Xueting; Liu, Lifen. The article conveys some information:

Monovalent cation perm-selective membrane (MCPMs) allow fast and selective transport of monovalent cations, and they are promisingly required for extraction of special ions, such as lithium extraction, acid recovery and sea salt production Herein, we report a novel strategy to design the critical functional layers of MCPMs with both space charge repulsion and cross-linked dense screenability. The in-situ deposition polymerization of pyrrole was carried out on the surface of sulfonated polyphenyl sulfone (SPPSU) substrate membrane followed by crosslinking quaternization of the polypyrrole (PPy) layer with diiodinated functional mols., thus, the membrane obtained more excellent selective permeability and stable transport properties of monovalent cations. It confirms that the designed PPy layers with charged surface and crosslinking structure improved the hydrophilicity, facilitated cation transport and increased ion flux. Meanwhile, for the dense PPy layer, the charged cross-linked structure endowed the functional layer with the synergistic characteristics of Donnan exclusion and pore size sieving for pos. charged ions, which improved the monovalent cation perm-selectivity of the membranes. At a constant c.d. of 5.1 mA/cm2, the optimal membrane exhibited superior perm-selectivity (PNaMg = 2.07) and monovalent cation flux (JNa+ = 2.80 x 10-8 (mol cm-2 s-1)) during electrodialysis. After reading the article, we found that the author used 1,2-Diiodoethane(cas: 624-73-7Computed Properties of C2H4I2)

1,2-Diiodoethane(cas: 624-73-7) is one of organic iodides. The carbon-iodine bond is weaker than other carbon-halogen bonds due to the poor electronegative nature of the iodine atom. In general, organic iodides are light-sensitive and turn yellow during storage, owing to the formation of iodine. Organic iodides can be alkyl, alkenyl, or alkynyl, and all of them are very reactive toward with many kinds of nucleophiles.Computed Properties of C2H4I2

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

In 2018,Lo, Chen-Tsyr; Isawa, Yuta; Nakabayashi, Kazuhiro; Mori, Hideharu published 《Design of ion-conductive core-shell nanoparticles via site-selective quaternization of triazole-triazolium salt block copolymers》.European Polymer Journal published the findings.Formula: C2H4I2 The information in the text is summarized as follows:

Triazolium-based ion-conductive nanoparticles (NPs) with crosslinked cores were synthesized using a self-assembled block copolymer comprising N-vinyl-4-ethyl-1,2,4-triazolium bis(trifluoromethanesulfonyl)imide (NVETri-NTf2) and N-vinyl-1,2,4-triazole (NVTri) and site-selective crosslinking quaternization in a selective solvent. Four different dihalide compounds, namely diiodoethane, diiodooctane, dibromoethane, and dibromooctane, afforded four core-shell NPs NP(C2-I), NP(C8-I), NP(C2-Br), and NP(C8-Br), resp. DLS analyses demonstrated the formation of stable NPs with uniform sizes (mean diameter = 192 nm for NP(C2-I), 196 nm for NP(C8-I), and 195 nm for NP(C2-Br)). Among these, NP(C2-Br) exhibited the highest ionic conductivities. In the presence of 30 wt% ionic liquid, high ionic conductivities of 1.26 × 10-3, 3.31 × 10-4, and 1.36 × 10-4 S/cm were achieved with solid-state NP(C2-Br) at 90, 55, and 25°C, resp., which are due to the enhanced segmental mol. motion and the formation of a preferable ionic-conductive path composed of the hydrophobic ionic-liquid based shell with the added ionic liquid In addition to this study using 1,2-Diiodoethane, there are many other studies that have used 1,2-Diiodoethane(cas: 624-73-7Formula: C2H4I2) was used in this study.

1,2-Diiodoethane(cas: 624-73-7) is one of organic iodides. Alkyl iodides react at a faster rate than alkyl fluorides due to the weak C-I bond. Iodo alkanes participate in a variety of organic synthesis reactions, which include the Simmons–Smith reaction (cyclopropanation using iodomethane), Williamson ether synthesis, Wittig reaction, Grignard reaction, alkyl coupling reactions, and Wurtz reaction.Formula: C2H4I2

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Recommanded Product: 1,2-DiiodoethaneIn 2020 ,《New D-A-p-A organic photo-sensitizer with thioindoxyl group for efficient dye-sensitized solar cells》 was published in Chemical Papers. The article was written by Hosseinnezhad, Mozhgan; Gharanjig, Kamaladin; Moradian, Siamak. The article contains the following contents:

Two new metal-free organic dyes with D-A-p-A structure containing monotriphenylamine as electron donor and cyanoacrylic acid as end electron acceptor were prepared All intermediates and organic photosensitizers were specified by anal. techniques. The cyclic voltammetry anal. was employed to examine the possibility of applying organic dyes in dye-sensitized solar cells and the results show that the charge transfer overall is done thermodynamically. Three configurations as individual, co-sensitization and tandem were selected for the investigation of photovoltaic properties. The photovoltaic investigation shows efficiency of 3.84%, 5.61%, 7.74% and 8.69% for Dye 1, Dye 2, co-sensitization and tandem structure, resp. In addition to this study using 1,2-Diiodoethane, there are many other studies that have used 1,2-Diiodoethane(cas: 624-73-7Recommanded Product: 1,2-Diiodoethane) was used in this study.

1,2-Diiodoethane(cas: 624-73-7) is one of organic iodides. The carbon-iodine bond is weaker than other carbon-halogen bonds due to the poor electronegative nature of the iodine atom. In general, organic iodides are light-sensitive and turn yellow during storage, owing to the formation of iodine. Organic iodides can be alkyl, alkenyl, or alkynyl, and all of them are very reactive toward with many kinds of nucleophiles.Recommanded Product: 1,2-Diiodoethane

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

In 2022,Nagrimanov, Ruslan N.; Samatov, Aizat A.; Solomonov, Boris N. published an article in Thermochimica Acta. The title of the article was 《Additive scheme of solvation enthalpy for halogenated aliphatic hydrocarbons at 298.15 K.》.Recommanded Product: 624-73-7 The author mentioned the following in the article:

In this work, an additive scheme for the estimation of solvation enthalpy of halogenated aliphatic hydrocarbons in n-heptane was developed. The proposed structural fragments for halogen group contributions are dependent on the nature of neighboring atoms. A linear relationship between solvation and vaporization enthalpy at 298.15 K for mono- and di-α,ω-halogen aliphatic compounds was found. These relationships can be used for the quick estimation of standard vaporization and solution enthalpies at 298.15 K. Proposed approaches for estimation of solvation, solution and vaporization enthalpies at 298.15 K were verified by conventional methods. In most cases, absolute deviations between exptl. and estimated values for halogenated aliphatic hydrocarbons do not exceed 1-2 kJ mol-1. In addition to this study using 1,2-Diiodoethane, there are many other studies that have used 1,2-Diiodoethane(cas: 624-73-7Recommanded Product: 624-73-7) was used in this study.

1,2-Diiodoethane(cas: 624-73-7) is one of organic iodides. Alkyl iodides react at a faster rate than alkyl fluorides due to the weak C-I bond. Iodo alkanes participate in a variety of organic synthesis reactions, which include the Simmons–Smith reaction (cyclopropanation using iodomethane), Williamson ether synthesis, Wittig reaction, Grignard reaction, alkyl coupling reactions, and Wurtz reaction.Recommanded Product: 624-73-7

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Reference of 1,2-DiiodoethaneIn 2016 ,《Synthesis of a sterically bulky diphosphine synthon and Ru(II) complexes of a cooperative tridentate enamide-diphosphine ligand platform》 was published in Dalton Transactions. The article was written by Annibale, Vincent T.; Ostapowicz, Thomas G.; Westhues, Stefan; Wambach, Truman C.; Fryzuk, Michael D.. The article contains the following contents:

To generate tridentate enamido diphosphine ligand platforms, the authors developed procedures for the preparation of tBu2PCH2CH2P(tBu)I, which involve low temperatures, pentane solvent and addition of 4 equiv of tBuLi to Cl2PCH2CH2PCl2 or 2 equiv of tBuLi to known Cl(tBu)PCH2CH2P(tBu)Cl also at low temperatures in pentane; an alternate method involves the inverse addition of Cl(tBu)PCH2CH2P(tBu)Cl to 2 equiv of tBuLi in pentane at 0°; all of these methods generate good yields of the tetraphosphine dimer (tBu2PCH2CH2P(tBu))2 contaminated by small amounts of tBu2PCH2CH2PtBu2 (dtbpe), which can be conveniently separated by sublimation. Subsequent oxidative cleavage of the P-P bond with I2 or 1,2-diiodoethane gave the desired tBu2PCH2CH2P(tBu)I, which undergoes C-P bond formation when added to 1 equiv of the Li N-2,6-diisopropylphenylenamide of cyclopentylidene imine to generate the HNPP ligand precursor; this species exists as a tautomeric mixture of the corresponding enamine and imine, the ratio of which depends on workup conditions used. This enamine-imine mixture can be used directly to form Ru(II) species either directly with heating to generate the five-coordinate (NPP)RuCl(CO) via loss of H2 or by inclusion of 1 equiv of KOtBu to generate (NPP)RuH(CO). X-ray crystallog. studies confirm that the geometry in the solid state matches the solution spectroscopic data. Subsequent studies of (NPP)RuH(CO) indicate that it reacts with benzaldehyde, benzyl alc., and H2 in a cooperative manner to generate hydride carbonyls that were characterized fully by NMR spectroscopy and x-ray crystallog. In the experiment, the researchers used 1,2-Diiodoethane(cas: 624-73-7Reference of 1,2-Diiodoethane)

1,2-Diiodoethane(cas: 624-73-7) is one of organic iodides. The carbon-iodine bond is weaker than other carbon-halogen bonds due to the poor electronegative nature of the iodine atom. In general, organic iodides are light-sensitive and turn yellow during storage, owing to the formation of iodine. Organic iodides can be alkyl, alkenyl, or alkynyl, and all of them are very reactive toward with many kinds of nucleophiles.Reference of 1,2-Diiodoethane

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

In 2015,Fernandez Saez, Nerea; Garcia Lopez, Jesus; Iglesias, Maria Jose; Lopez Ortiz, Fernando published 《Derivatization of (quinolin-8-yl)phosphinimidic amides via ortho-lithiation revisited》.Dalton Transactions published the findings.Formula: C2H4I2 The information in the text is summarized as follows:

The direct ortho-lithiation of N-H containing (quinolin-8-yl)phosphinimidic amides by reaction with 1 equiv of BuLi described by Wang and co-workers was reexamined The multinuclear magnetic resonance (1H, 2H, 7Li, 13C, 15N and 31P) study of the species formed in the monolithiation of N-(tert-butyl)-P,P-diphenyl-N’-(quinolin-8-yl)phosphinimidic amide 5 with BuLi in THF showed that proton abstraction occurred exclusively and quant. at the NH. The combination of the NMR results with a DFT study made it possible to describe the structure of the N-lithiated species 9 as a dimer consisting of an eight-membered ring showing two lithium ions triply coordinated to nitrogen atoms corresponding to the deprotonated amine and aminoquinoline moieties of different monomers. The formation of a polymer featuring the same coordination mode couldn’t be excluded. Optimized conditions for the efficient derivatization of 5 via ortho-lithiation were realized. The reaction of 5 with 2.4 equiv of Me3CLi in THF at -80-25° for 3 h afforded a N,Cortho-dilithiated species that was trapped with electrophiles leading to new functionalized ortho derivatives of 5 in good yields. In addition to this study using 1,2-Diiodoethane, there are many other studies that have used 1,2-Diiodoethane(cas: 624-73-7Formula: C2H4I2) was used in this study.

1,2-Diiodoethane(cas: 624-73-7) is one of organic iodides. Alkyl iodides react at a faster rate than alkyl fluorides due to the weak C-I bond. Iodo alkanes participate in a variety of organic synthesis reactions, which include the Simmons–Smith reaction (cyclopropanation using iodomethane), Williamson ether synthesis, Wittig reaction, Grignard reaction, alkyl coupling reactions, and Wurtz reaction.Formula: C2H4I2

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

In 2017,Kreyenschmidt, Anne-Kathrin; Bachmann, Sebastian; Niklas, Thomas; Stalke, Dietmar published 《Molecular Weight Estimation of Molecules Incorporating Heavier Elements from van-der-Waals Corrected ECC-DOSY》.ChemistrySelect published the findings.Application In Synthesis of 1,2-Diiodoethane The information in the text is summarized as follows:

Aggregate formation of organometallic compounds can be straightforwardly observed and interpreted through DOSY mol. weight (MW) estimation Recently, the power-law approach and preparation of external calibration curves (ECCs) has propelled the applicability of this DOSY MW estimation However, effective prediction of MWs of mols. containing heavier elements (e. g. halogenated compounds) has not been sufficiently accounted for. Hence, we introduce specialized ECCs for various halogenated mols. In an innovative attempt we propose a correction factor for standard ECCs that scales with mol. features to extend considerably the range of mols. that can be investigated by ECC-DOSY. The results came from multiple reactions, including the reaction of 1,2-Diiodoethane(cas: 624-73-7Application In Synthesis of 1,2-Diiodoethane)

1,2-Diiodoethane(cas: 624-73-7) is one of organic iodides. Alkyl iodides react at a faster rate than alkyl fluorides due to the weak C-I bond. Iodo alkanes participate in a variety of organic synthesis reactions, which include the Simmons–Smith reaction (cyclopropanation using iodomethane), Williamson ether synthesis, Wittig reaction, Grignard reaction, alkyl coupling reactions, and Wurtz reaction.Application In Synthesis of 1,2-Diiodoethane

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com