Boron Hydrides
نویسندگان
چکیده
منابع مشابه
Bonding in Boron Hydrides
Unique preferred localized valence structures for B2H6, B4H10, B5H,, and B6H10 have been found from accurate self-consistent field wavefunctions by maximizing Coulomb repulsions of electron pairs within orbitals. Objective evidence has thus been obtained for two-centre BH, three-centre bridge BHB, two-centre BB and central three-centre BBB bonds, but not, as yet, for open three-centre BBB bonds...
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AB,-type intermetallic compounds were prepared by induction melting and melt spinning. The composition of a stoichiometric compound LaNi,,,Co,.,Mn,,,Al,.~ with a hexagonal CaCu, structure was varied by &i&&metric and nonstoichiometric addition of Si and B. Discharge capacity is increased considerabdy by addition of silicon in the range of 0.5-5 at% with a maximum value at about 1%. The highest ...
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The first fully structurally characterized ternary europium palladium hydrides (deuterides) are reported. The most Eu rich compound is Eu(2)PdD(4). Its beta-K(2)SO(4) type structure (space group Pnma, a = 749.47(1) pm, b = 543.34(1) pm, c = 947.91(1) pm, Z = 4) contains tetrahedral 18-electron [PdD(4)](4)(-) complex anions and divalent Eu cations. The compound is presumably nonmetallic and show...
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Noble gases are mostly known as inert monatomic gases due to their limited reactivity with other elements. However, the first predictions of noble-gas compounds were suggested by Kossel in 1916, by von Antropoff in 1924, and by Pauling in 1930. It took many decades until the first noble-gas compound, XePtF6, was synthesized by Neil Bartlett in 1962. This was followed by gradual development of t...
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In the past few years we have developed an array of composite reducing systems based on combinations of tin or silicon hydrides with various transition-metal homogeneous catalysts such as palladium(O), ruthenium(I1) and molybdenum(0) complexes. These represent a useful family of reducing media that effect highly selective reductions of various organic functional groups, such as allylic heterosu...
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ژورنال
عنوان ژورنال: The Journal of Physical Chemistry
سال: 1922
ISSN: 0092-7325,1541-5740
DOI: 10.1021/j150225a003