The complex molecule in the title compound, [NiBr2(C36H40N2)], has mirror symmetry. The Ni(II) atom and two Br atoms are located on the mirror plane. The Ni(II) atom is four-coordinated by the two Br atoms and two N atoms from an N,N'-bis(2,6-diethyl-4-phenyl-phen-yl)butane-2,3-di-imine ligand in a distorted tetra-hedral geometry. The dihedral angle formed between the two adjacent benzene rings is 47.1 (1)°.
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http://dx.doi.org/10.1107/S160053681400292X | DOI Listing |
Inorg Chem
December 2024
Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States.
The synthesis, characterization, and reactivity of a NiOH core bearing a tridentate redox-active ligand capable of reaching three molecular oxidation states is presented in this paper. The reduced complex [LNiOH] was characterized by single-crystal X-ray diffraction analysis, depicting a square-planar NiOH core stabilized by intramolecular H-bonding interactions. Cyclic voltammetry measurements indicated that [LNiOH] can be reversibly oxidized to [LNiOH] and [LNiOH] at very negative reduction potentials (-1.
View Article and Find Full Text PDFJ Am Chem Soc
December 2024
School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China.
Ni-catalyzed multicomponent cross-couplings have emerged as a powerful strategy for efficiently constructing complex molecular architectures from a diverse array of organic halides. Despite its potential, selectively forming multiple chemical bonds in a single operation, particularly in the realm of cross-electrophile coupling catalysis, remains a significant challenge. In this study, we have developed a consecutive open-shell reductive Ni catalysis, enabling the formation of two geminal C(sp)-C(sp) bonds from two stereoelectronically similar C(sp)-I reactants in conjunction with a methylene electrophile.
View Article and Find Full Text PDFJ Phys Chem A
December 2024
College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, China.
A systematic theoretical study was performed on the electrophilic and nucleophilic properties of Group 10 square-planar metal compounds [M(SCNEt)] (M = Ni , Pd , and Pt ) and their complexes. The nucleophilic metal center and coordinated sulfur atom in [M(SCNEt)] facilitate the formation of metal-involving and conventional noncovalent bonds. The presence a heavier metal center results in a more negative electrostatic potential and a larger nucleophilicity, which in turn leads to the formation of stronger metal-involving noncovalent bonds than those formed by a lighter metal center.
View Article and Find Full Text PDFSci Rep
November 2024
Department of Inorganic Chemistry, Shahid Beheshti University, Tehran, 19839 69411, Iran.
Five metal dithiocarbamate complexes [M(PTHIQDTC)] [where PTHIQDTC is (S)-1-phenyl-1,2,3,4-tetrahydroisoquinoline dithiocarbamate anion and M is Ni(II) (1), Sn(II) (2), Hg(II) (3), Pb(II) (4) and Zn(II) (5)] were synthesized from the reaction of MX (X is Cl for 1-3 and OAc for 4-5) with ligand of triethylammonium (S)-1-phenyl-1,2,3,4-tetrahydroisoquinoline dithiocarbamate [EtNH][PTHIQDTC] in methanolic solution at room temperature. The five complexes were characterized by IR, H andC NMR, mass spectrometry, elemental analysis and TGA analysis. Recrystallization of [Zn(PTHIQDTC)] (5) in dimethylsulfoxide (DMSO) converts 5 to [Zn(PTHIQDTC)(DMSO)] (6).
View Article and Find Full Text PDFChemistry
November 2024
Universität Göttingen, Institut für Anorganische Chemie, Tammannstrasse 4, D-37077, Göttingen, Germany.
Salt metathesis of dinickel(II) complex LNiBr (1; L is a dinucleating pyrazolate ligand with two β-diketiminato chelate arms) with Na(OCP) ⋅ (dioxane) yielded LNi(PCO) (2) with a P-bridging phosphaethynolate. Further reaction of 2 with benzyl isocyanide or with an N-heterocyclic carbene (NHC) triggered decarbonylation and gave LNi(PCN-CHPh) (3) and LNiP(NHC) (4) with P-bridging cyanophosphide and NHC-phosphinidenide, respectively. Electronic structure analysis indicated a μ-η : η binding mode of the PCO anion between the two Ni ions in 2, which is even more pronounced for the [PCN(-CHPh)] anion in 3.
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