Results 221 to 230 of about 11,878 (257)

Ultra‐Weak Metal−Metal Bonding: Is There a Beryllium‐Beryllium Triple Bond?

ChemPhysChem, 2019
AbstractMetal‐metal triple bonds featuring s‐block element have not been reported until now. Only Be−Be double bonds between have been predicted theoretically based on the intuitive electron donation from four s1 type electron‐donating ligands. Herein, we theoretically predicted a novel species featuring a Be−Be triple bond in the Li6Be2 molecule.
Shahnaz S. Rohman, Chayanika Kashyap, Sabnam S. Ullah, Ankur K. Guha, Lakhya J. Mazumder, Pankaz. K. Sharma   +5 more
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Bonding in beryllium carbonyls

Chemical Physics Letters, 1994
Abstract The nature bonding in Be(CO) 2 and Be 2 (CO) 4 has been discussed on the basis of bond indices, valencies and localized MOs. Similar calculations have been performed also on HBeBeH in order to elucidate the nature of the BeBe bond in Be 2 (CO) 4 .
T. Kar, P.K. Nandi, A.B. Sannigrahi
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Modulating the strength of tetrel bonding through beryllium bonding

Journal of Molecular Modeling, 2016
Quantum chemical calculations were performed to investigate the stability of the ternary complexes BeH2···XMH3···NH3 (X = F, Cl, and Br; M = C, Si, and Ge) and the corresponding binary complexes at the atomic level. Our results reveal that the stability of the XMH3···BeH2 complexes is mainly due to both a strong beryllium bond and a weak tetrel-hydride
Mingxiu, Liu, Li, Yang, Qingzhong, Li, Wenzuo, Li, Jianbo, Cheng, Bo, Xiao, Xuefang, Yu   +6 more
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Beryllium doubles down on nitrogen bonding

Chemical & Engineering News, 2021
Metals on the west wing of the periodic table—the s-block elements—almost never form double bonds, because of the meager capacity of their s orbitals. Now, a team led by Robert J. Gilliard Jr.
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Diffusion bonding of beryllium-copper alloys

Journal of Materials Science, 1992
A process has been developed for diffusion-bonding identical beryllium-copper alloy, 1.8 to 2.0 wt% Be, which has produced bond strengths comparable to that of the bulk. Bonding resulted from self-diffusion between two Be-Cu samples, brought into intimate contact and heated in a high vacuum.
D. C. Eckman, B. Z. Rosenblum, C. Q. Bowles   +2 more
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Strong beryllium–beryllium bonds

Physical Chemistry Chemical Physics
Metal–metal bonds have attracted the attention of chemists for a long time. The nature of metal–metal bonds spans from covalent single to multiple bonds.
Palash J. Thakuria, Amit Das, Kangkan Sarmah, Ankur K. Guha   +3 more
openaire   +1 more source

Beryllium-beryllium bonding. 1. Energetics of protonation and hydrogenation of beryllium dimer and its ions

The Journal of Physical Chemistry, 1992
This paper presents the results of molecular orbital studies of the stability of beryllium molecules, and of various hydrides of beryllium, and their ions. Many of the hydrides are linear systems, and they are more stable than the beryllium molecule itself.
Pablo J. Bruna, Gino A. Di Labio, James S. Wright   +2 more
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Charge Transfer in Beryllium Bonds and Cooperativity of Beryllium and Halogen Bonds. A New Perspective

2016
The main characteristics of beryllium bonds formed by the interaction of different Lewis bases with BeX2 (X = H, F) moieties have been analyzed by means of the Charge Displacement (CD) function. This analysis is systematically compared with that provided by other approaches based on the topology of the electron density, namely the quantum theory of ...
Mykolayivna Lemishko, Kateryna, Bistoni, Giovanni, Belpassi, Leonardo, Tarantelli, Francesco, Merced Montero-Campillo, M., Yanez, Manuel   +11 more
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Beryllium Dimer—Caught in the Act of Bonding

Science, 2009
2 Be or Not 2 Be? The beryllium dimer is a rather simple-looking compound, bridging two atoms of the fourth-lightest element. Yet it has long posed a frustrating challenge to theorists, because, to a first approximation, chemical bonding models suggest that it should not exist.
Jeremy M, Merritt, Vladimir E, Bondybey, Michael C, Heaven   +2 more
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Planar Hexacoordinate Beryllium: Covalent Bonding Between s–block Metals

Chemistry – A European Journal, 2023
AbstractAchieving a planar hypercoordinate arrangement of s‐block metals through covalent bonding with ligands is challenging due to the strong ionicity involved. Herein, we report the first case of a neutral binary global minimum containing a planar hexacoordinate beryllium atom. The central Be atom is coordinated by six active Be atoms, the latter in
Bo Jin, Xiao‐Ling Guan, Miao Yan, Ying‐Jin Wang, Yan‐Bo Wu   +4 more
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