Dalton Transactions, Год журнала: 2024, Номер unknown
Опубликована: Янв. 1, 2024
Starting from ClSbR
Язык: Английский
Chemical Science, Год журнала: 2024, Номер 15(30), С. 12118 - 12125
Опубликована: Янв. 1, 2024
(F 5 C 2 ) SbCH P( t Bu) reacts in a FLP-like manner with CS , SO PhNCO/S and (MePh P)AuCl. The AuCl adduct show secondary interactions between the Lewis acidic Sb atom electron rich atoms, intra- intermolecular, respectively.
Язык: Английский
Процитировано
4
Dalton Transactions, Год журнала: 2024, Номер 53(28), С. 11762 - 11768
Опубликована: Янв. 1, 2024
The reactions of the frustrated Lewis pair (F
Язык: Английский
Процитировано
2
Dalton Transactions, Год журнала: 2024, Номер 53(29), С. 12234 - 12239
Опубликована: Янв. 1, 2024
Bidentate and tetradentate chalcogen bonding host systems with SeCF
Язык: Английский
Процитировано
1
Dalton Transactions, Год журнала: 2024, Номер 53(18), С. 7958 - 7964
Опубликована: Янв. 1, 2024
Four bidentate boron Lewis acids based on the 1,8-diethynylanthracene backbone have been synthesized by a tin-boron exchange reaction with various chloroboranes, yielding products in good to excellent yields. Complexation experiments of host compounds pyridine, pyrimidine and TMEDA demonstrated striking differences terms formation solubility supramolecular adducts. The host-guest complexes were investigated multinuclear NMR spectroscopy structurally characterized X-ray diffraction experiments, illustrating adaptation system upon adduct different neutral guest molecules.
Язык: Английский
Процитировано
0
Dalton Transactions, Год журнала: 2024, Номер 53(28), С. 11970 - 11980
Опубликована: Янв. 1, 2024
Attaching three Lewis acid functions to the TBTQ scaffold gave tridentate acids. Their ability complex (poly-)Lewis bases and aggregate sizes were studied by solution NMR including DOSY NMR.
Язык: Английский
Процитировано
0
Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(32)
Опубликована: Май 20, 2024
Abstract The selective formation of antimony‐carbon bonds via organic superbase catalysis under metal‐ and salt‐free conditions is reported. This novel approach utilizes electron‐deficient stibine, Sb(C 6 F 5 ) 3 , to give upon base‐catalyzed reactions with weakly acidic aromatic heteroaromatic hydrocarbons access a range new stibines, respectively, loss C HF . Also, the significantly less Ph 2 SbC PhSb(C smoothly underwent exchange terminal alkynes generate stibines formulae PhSb(C≡CPh) SbC≡CR [R=C H 4 ‐NO COOEt, CH Cl, NEt OSiMe ], respectively. These formal substitution proceed high selectivity as only groups serve leaving group be liberated proton transfer from alkyne. Kinetic studies reaction phenyl acetylene form SbC≡CPh suggested empirical rate law exhibit first‐order dependence respect base catalyst, alkyne stibine. DFT calculations support pathway proceeding concerted σ‐bond metathesis transition state, where catalyst activates Sb‐C bond sequence through secondary interactions.
Язык: Английский
Процитировано
0
Angewandte Chemie, Год журнала: 2024, Номер 136(32)
Опубликована: Май 20, 2024
Abstract The selective formation of antimony‐carbon bonds via organic superbase catalysis under metal‐ and salt‐free conditions is reported. This novel approach utilizes electron‐deficient stibine, Sb(C 6 F 5 ) 3 , to give upon base‐catalyzed reactions with weakly acidic aromatic heteroaromatic hydrocarbons access a range new stibines, respectively, loss C HF . Also, the significantly less Ph 2 SbC PhSb(C smoothly underwent exchange terminal alkynes generate stibines formulae PhSb(C≡CPh) SbC≡CR [R=C H 4 ‐NO COOEt, CH Cl, NEt OSiMe ], respectively. These formal substitution proceed high selectivity as only groups serve leaving group be liberated proton transfer from alkyne. Kinetic studies reaction phenyl acetylene form SbC≡CPh suggested empirical rate law exhibit first‐order dependence respect base catalyst, alkyne stibine. DFT calculations support pathway proceeding concerted σ‐bond metathesis transition state, where catalyst activates Sb‐C bond sequence through secondary interactions.
Язык: Английский
Процитировано
0
European Journal of Inorganic Chemistry, Год журнала: 2024, Номер 27(31)
Опубликована: Авг. 6, 2024
Abstract Two tri‐ and two hexadentate poly‐Lewis acids (PLAs) with calyx‐like structures of C 3 symmetry containing aluminum‐ boron‐containing Lewis acidic functions were prepared by tin‐metal exchange reactions. The triply hydrosilylated [12]annulene served as basic framework. It forms a structure the stereo‐ regioselective attachment three SiMeCl 2 groups to planar [12]annulene. PLA precursors generated attaching or six trimethylstannylethynyl silicon atoms. acid introduced using reagents bis‐(bis(trimethylsilyl)methyl)aluminium hydride (HAl[CH(SiMe ) ] catecholatochloroborane (ClBCat). complexation behavior PLAs towards different bases was investigated NMR. Bases included pyridine, polydentate nitrogen‐ phosphorus‐containing bases. Additionally, molecules bidentate base captured PLAs. Diffusion NMR experiments provided insight into aggregation processes: some adducts had significantly larger volume than expected, indicating formation expected 1 : adduct, including adduct cages. distances between units steric requirement attached substituents determine Thus, weak BCat show no (tridentate case) strong (hexadentate interaction PMe ‐containing bases, if they can act cooperatively.
Язык: Английский
Процитировано
0
Dalton Transactions, Год журнала: 2024, Номер unknown
Опубликована: Янв. 1, 2024
Starting from ClSbR
Язык: Английский
Процитировано
0