Showing papers by "Omar M. Yaghi published in 1992"
TL;DR: The Schlemper structure was first observed in Z as mentioned in this paper, where the [V,O,,]lzcage B encapsulates a water molecule and all 18 of its square faces are occupied by V=O groups.
Abstract: a PO:anion. This cage is defined by 24 bridging oxygen atoms, and 14 of its 18 square faces are occupied by vanadium atoms, each of which is bonded to a terminal oxygen atom. The closely related Schlemper structure was first observed in Z.[31 Here, the [V,,O,,]lzcage B encapsulates a water molecule. This cage is also defined by 24 bridging oxygen atoms, but all 18 of its square faces are occupied by V=O groups. The Keggin and Schlemper structures are very similar since they are both based on O,, cage frameworks. They differ in that the 24 bridging oxygens define the vertices of the 0, rhombicuboctahedron in Keggin structures and the D,, elongated square gyrobicupola in Schlemper structures.[41
152 citations
TL;DR: In this article, the method of cluster excision has been used to remove intact clusters from the ternary phases Re 6 Se 4+q Cl 10-2q (g=1-3) by removing intact clusters.
Abstract: Removal of intact clusters from the ternary phases Re 6 Se 4+q Cl 10-2q (g=1-3) by the method of cluster excision has been investigated. The q=1 phase Re 6 Se 6 Cl 8 (Re 5 Se i 5 Cl i 3 Cl a 4 Cl a-a 2/2 ) has a one-dimensional (chainlike) structure.
68 citations
46 citations
TL;DR: This paper showed that trichloroacetic acid in ethanol/dichloromethane followed by from nitroethane/p-xylene yields [(η 5 -C 5 H 5 )Ti(W 5 O 18 H)] [(n-C 4 H 9 ) 4 N] 2.0.5[C 6 H 4 (CH 3 ) 2 ]
Abstract: Reaction of [(η 5 -C 5 H 5 )Ti(W 5 O 18 )][(n-C 4 H 9 ) 4 N] 3 with trichloroacetic acid in ethanol/dichloromethane followed by from nitroethane/p-xylene yields [(η 5 -C 5 H 5 )Ti(W 5 O 18 H)] [(n-C 4 H 9 ) 4 N] 2 .0.5[C 6 H 4 (CH 3 ) 2 ]
35 citations