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ISSN: 2414-3146

March 2024 issue

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Cover illustration: The lipophilic character of ferrocene makes it capable of penetrating cell membranes and so its incorporation into biological mol­ecules represents a matter of great inter­est in drug development. It has been shown that the addition of ferrocene residues in biologically active mol­ecules offers the possibility of improving the efficacy of therapeutic drugs. In this context, diferrocenyl-1,3-di­thiol­ane derivatives have pharmacological activity and may be considered as lead candidates for the development of new drugs or as building blocks for new mol­ecules. In the crystal of 2-ferrocenyl-2-[(2-ferrocenylethen­yl)(morpholin-4-yl)meth­yl]-1,3-di­thiol­ane, cyclo­penta­dienyl-C—H⋯O(morpholin­yl) inter­actions feature within helical chains parallel to the c-axis direction. The chains are connected by methyl­ene- and cyclo­penta­dienyl-C—H⋯O(cyclo­penta­dien­yl) inter­actions. See: Oliva-Colunga, Sánchez García, Flores-Alamo & Klimova [IUCrData (2024). 8, x240234]

inorganic compounds


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The crystal structure of defect-scheelite type Nd2/3[WO4] consists of [WO4]2− tetra­hedra and trigonal [NdO8]13– dodeca­hedra.

metal-organic compounds


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In the structure of the title compound, the Ru—N distances of the DMAP ligands are influenced by the trans chloride or di­methyl­sulfoxide-κS ligands.

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The bis-chelated mononuclear nickel(II) complex shows inversion symmetry, with the di­thio­carbazato ligand in the usual trans configuration and the central metal cation in a square-planar coordination environment.

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The title compound was synthesized using Mn(CO)5Br. The manganese atom is situated on a crystallographic inversion center. The supra­molecular architecture is characterized by several inter­molecular C—H⋯N, N—H⋯Br and C—H⋯π inter­actions.

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The structure of the title compound, [Ag2(NO3)2(C14H18N2)2]n, contains subtle differences in ligand, metal, and counter-anion coordination. One quinoxaline ligand uses one of its quinoxaline N atoms to bond to one silver cation. That silver cation is bound to a second quinoxaline which, in turn, is bound to a second silver atom, thereby using both of its quinoxaline N atoms. A nitrate group bonds with one of its O atoms to the first silver and uses the same oxygen to bond to a silver atom (related by symmetry to the second), thereby forming an extended network. The second nitrate group on the other silver bonds via two nitrate O atoms; one silver cation therefore has a coordination number of three whereas the second has a coordination number of four.

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The structure of 2-ferrocenyl-2-[(2-ferrocenylethen­yl)(morpholin-4-yl)meth­yl]-1,3-di­thiol­ane, is described. In the crystal, cyclo­penta­dienyl-C—H⋯O(morpholin­yl) inter­actions feature within helical chains parallel to the c-axis direction. The chains are connected by methyl­ene- and cyclo­penta­dienyl-C—H⋯O(cyclo­penta­dien­yl) inter­actions.

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The cationic complex of the title salt, [Ru(C19H13N5)2](PF6)2·3C4H10O, has the Ru atom in a slightly distorted octa­hedral environment of two tridentate benzimdazolyl-pyridine ligands and displays extensive π–π and C—H⋯π inter­actions.

organic compounds


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Structural analysis of the title diasteromeric sulfone determines this to be the erythro (RR/SS) isomer, and was pivotal in showing that the 1,3-elimination reactions of these compounds, which lead to substituted stilbenes, occur with inversion at each asymmetric carbon atom.

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The mol­ecules of the title compound pair up to form carb­oxy­lic acid–carb­oxy­lic acid homodimers in the crystal structure.

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There are two crystallographically independent mol­ecules in the asymmetric unit of the title compound, which are linked by pairwise O—H⋯O hydrogen bonds.

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There are no significant π–π or C—H⋯π inter­actions in the extended structure of the title compound.

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The crystal structure of a new fluorinated di­thio­carbazate imine containing the isatin moiety, 4-fluoro­benzyl (Z)-2-(2-oxoindolin-3-yl­idene)hydrazine-1-carbodi­thio­ate, is described.

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The coordination geometry of the penta­coordinated SiIV atom in the title complex is a distorted trigonal bipyramid.

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The chiral title compound forms supra­molecular chains, through N—H⋯O hydrogen bonds between the amide and carboxyl­ate groups.
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