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Iliana E. Medina‐Ramírez Mark J. Fink James P. Donahue 《Acta Crystallographica. Section C, Structural Chemistry》2009,65(12):m475-m477
The title compound, [Zn3(C9H21SiS)6] or [(iPr3SiS)Zn(μ‐SSiiPr3)2Zn(μ‐SSiiPr3)2Zn(SSiiPr3)], is the first structurally characterized homoleptic silanethiolate complex of zinc. A near‐linear arrangement of three ZnII ions is observed, the metals at the ends being three‐coordinate with one terminally bound silanethiolate ligand. The central ZnII ion is four‐coordinate and tetrahedral, with two bridging silanethiolate ligands joining it to each of the two peripheral ZnII ions. The nonbonding intermetallic distances are 3.1344 (11) and 3.2288 (12) Å, while the Zn...Zn...Zn angle is 172.34 (2)°. A trimetallic silanethiolate species of this type has not been previously identified by X‐ray crystallography for any element. 相似文献
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Kevin A. Kreisel Glenn P. A. Yap Klaus H. Theopold 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(12):m569-m570
The title compound, [CrZn2(CH3)2Cl4(C4H8O)4], contains a central distorted octahedral Cr atom, located at an inversion center, bound to two tetrahydrofuran ligands and four chloro ligands that bridge to two symmetry‐related tetrahedral Zn atoms. The coordination around zinc is completed by methyl and tetrahydrofuran ligands. This structure is compared with a previously reported complex of vanadium, and their differences in metric parameters are explained. 相似文献
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The title complex, [Ag4(C7H5O3)2(C8H6N2)4(C7H6O3)4], lies about an inversion centre and has a unique tetranuclear structure consisting of four AgI atoms bridged by four N atoms from two 1,8‐naphthyridine (napy) ligands to form an N:N′‐bridge and four O atoms from two salicylate (SA) ligands to form an O:O′‐bridge. The Ag atoms have distorted octahedral coordination geometry. The centrosymmetric Ag4 ring has Ag—Ag separations of 2.772 (2) and 3.127 (2) Å, and Ag—Ag—Ag angles of 107.70 (4) and 72.30 (4)°. All SA hydroxy groups take part in intramolecular O—H⋯O hydrogen bonding. In the crystal packing, the napy rings are oriented parallel and overlap one another. These π–π interactions, together with weak intermolecular C—H⋯O contacts, stabilize the crystal structure. 相似文献