A. A. Shubina, T. N. Orlova, V. A. Tafeenko, L. A. Aslanov
{"title":"Crystal Structure of a Binuclear Lanthanum(III) Complex Containing Urea and a Hexa(isothiocyanato)Chromate(III) Anion","authors":"A. A. Shubina, T. N. Orlova, V. A. Tafeenko, L. A. Aslanov","doi":"10.1134/S0022476626090155","DOIUrl":null,"url":null,"abstract":"<p>Reaction of K<sub>3</sub>[Cr(NCS)<sub>6</sub>]·H<sub>2</sub>O with aqueous solutions of urea and lanthanum(III) nitrate affords the complex [La(H<sub>2</sub>O)<sub>0.5</sub>((NH<sub>2</sub>)<sub>2</sub>CO)<sub>8</sub>][Cr(NCS)<sub>6</sub>]. Crystallographic data for this complex: <i>a = b = </i>17.2765(2) Å, <i>c = </i>14.1728(2) Å, α = β = γ = 90°, <i>V = </i>4230.3 Å<sup>3</sup>, <i>Z = </i>2, space group <i>P</i>4/<i>ncc</i>. The structure shows strong interligand (N–H⋯O) hydrogen bonds and weak (N–H⋯S) hydrogen bonds between ligands and sulfur atoms of the cations. The coordination number of La is 9; its coordination polyhedron is a monocapped square antiprism. The coordination number of the Cr atom is 6, and the coordination polyhedron of this atom is an octahedron. The obtained and characterized complex is the first example of lanthanum complexes containing eight urea molecules and one water molecule in the coordination sphere.</p>","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"67 9","pages":"2058 - 2065"},"PeriodicalIF":1.5000,"publicationDate":"2026-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Structural Chemistry","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1134/S0022476626090155","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
Reaction of K3[Cr(NCS)6]·H2O with aqueous solutions of urea and lanthanum(III) nitrate affords the complex [La(H2O)0.5((NH2)2CO)8][Cr(NCS)6]. Crystallographic data for this complex: a = b = 17.2765(2) Å, c = 14.1728(2) Å, α = β = γ = 90°, V = 4230.3 Å3, Z = 2, space group P4/ncc. The structure shows strong interligand (N–H⋯O) hydrogen bonds and weak (N–H⋯S) hydrogen bonds between ligands and sulfur atoms of the cations. The coordination number of La is 9; its coordination polyhedron is a monocapped square antiprism. The coordination number of the Cr atom is 6, and the coordination polyhedron of this atom is an octahedron. The obtained and characterized complex is the first example of lanthanum complexes containing eight urea molecules and one water molecule in the coordination sphere.
期刊介绍：
Journal is an interdisciplinary publication covering all aspects of structural chemistry, including the theory of molecular structure and chemical bond; the use of physical methods to study the electronic and spatial structure of chemical species; structural features of liquids, solutions, surfaces, supramolecular systems, nano- and solid materials; and the crystal structure of solids.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
