Results 221 to 230 of about 2,056,277 (235)
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ChemInform, 1990
Abstract2‐Selenocyanatobenzoyl chloride (I) reacts with diethylene glycol (II) or the tetraoxadiazaoctadecane (V) to produce the selenocyanates (III) and (VI) which are cyclized via the corresponding diselenolates, yielding the macrocyclic bisdiselenide (IV) or the diselenide (VII).
Shuji Tomoda, Michio Iwaoka
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Abstract2‐Selenocyanatobenzoyl chloride (I) reacts with diethylene glycol (II) or the tetraoxadiazaoctadecane (V) to produce the selenocyanates (III) and (VI) which are cyclized via the corresponding diselenolates, yielding the macrocyclic bisdiselenide (IV) or the diselenide (VII).
Shuji Tomoda, Michio Iwaoka
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Beyond the triple bond: unlocking dinitrogen activation with tailored superbase phosphines.
Dalton TransactionsActivating atmospheric dinitrogen (N2), a molecule with a remarkably strong triple bond, remains a major challenge in chemistry. This theoretical study explores the potential of superbase phosphines, specifically those decorated with imidazolin-2-imine ((
V. U. Krishnapriya, C. Suresh
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Journal of the American Chemical Society, 1996
A fascinating aspect of inorganic chemistry is the occurrence of complicated and varied molecular shapes. However, these same features lead to difficulties in developing molecular mechanics (MM) methods that are suitable for inorganic molecules. In this paper we demonstrate that simple valence bond concepts can guide the construction of a new MM force ...
Thomas Cleveland and, Clark R. Landis
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A fascinating aspect of inorganic chemistry is the occurrence of complicated and varied molecular shapes. However, these same features lead to difficulties in developing molecular mechanics (MM) methods that are suitable for inorganic molecules. In this paper we demonstrate that simple valence bond concepts can guide the construction of a new MM force ...
Thomas Cleveland and, Clark R. Landis
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Crystal and Molecular Structures of Hypervalent Thia/Selena-pentalenes
, 1997X-Ray structure analyses were performed on the 2,3,4,5-tetrahydro-3,4-dimethylene-2,5-bis(4-chlorophenylimino)-1,6,6aλ4-trithia-3,4-diazapentalene (5), 2,5-bis(4-chlorophenylimino)-6aλ4-thia-1,6-diselena-3,4-diazapentalene derivative (6) and 2,5-bis ...
F. Iwasaki +6 more
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Journal of Chemical Education, 1998
A multicenter valence-bond/molecular-orbital bonding scheme for main group "hypervalent" molecules is proposed which extends the 3-center-4-electron (3c-4e) bonding model of Rundle and Pimentel to include 4c-6e, 5c-8e, and 6c-10e bonds. This model allows the determination of bond orders and a rationalisation of bond distances.
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A multicenter valence-bond/molecular-orbital bonding scheme for main group "hypervalent" molecules is proposed which extends the 3-center-4-electron (3c-4e) bonding model of Rundle and Pimentel to include 4c-6e, 5c-8e, and 6c-10e bonds. This model allows the determination of bond orders and a rationalisation of bond distances.
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The shapes of three hypervalent systems of first‐row atoms FH3, H4o, and F3H
, 2009Musher's theory of hypervalent molecules (2) accounts for the shape of numerous molecules containing second- and third-row atoms of groups V, VI, and VII.
D. Shillady, C. Trindle
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Hypervalent molecules and peripheral orbitals
Journal of Chemical Education, 1985San-Yan Chu, Shyi-Long Lee
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<i>d</i> Orbitals in Hypervalent Molecules [PDF]
University Chemistry, 2016 Tian-Yang Chen +3 more
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Effectively hypervalent first-row molecules. 1. Octet rule violations by OLi3 and OLi4
Journal of the American Chemical Society, 1982Ernst Ulrich Wuerthwein +2 more
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Increased-valence structures and hypervalent molecules
International Journal of Quantum Chemistry, 1996openaire +2 more sources