In the title methanol disolvate complex, [Ni(4)(C(14)H(16)N(3)O(4))(2)(ClO(4))(2)(C(10)H(8)N(2))(2)]·2CH(3)OH, the neutral tetra-nickel(II) system lies on a centre of inversion. The polyhedron around each Ni(II) atom is a square pyramid. The separations of the Ni atoms bridged by the oxamide and carboxyl groups are 5.227 (9) and 5.268 (6) Å, respectively. In the crystal structure, a two-dimensional supramolecular network structure involving O-H⋯O and C-H⋯O hydrogen bonding is observed.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2971995 | PMC |
| http://dx.doi.org/10.1107/S160053680905017X | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Crystal structure of bis-{5-(4-chloro-phen-yl)-3-[6-(1-pyrazol-1-yl)pyridin-2-yl]-1-1,2,4-triazol-1-ido}nickel(II) methanol disolvate.
Acta Crystallogr E Crystallogr Commun
October 2024
Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska Street 64, Kyiv, 01601, Ukraine.
The unit cell of the title compound, [Ni(CHClN)]·2CHOH, consists of a neutral complex and two methanol mol-ecules. In the complex, the two tridentate 2-(3-(4-chloro-phen-yl)-1-1,2,4-triazol-5-yl)-6-(1-pyrazol-1-yl)pyridine ligands coordinate to the central Ni ion through the N atoms of the pyrazole, pyridine and triazole groups, forming a pseudo-octa-hedral coordination sphere. Neighbouring tapered mol-ecules are linked through weak C-H(pz)⋯π(ph) inter-actions into monoperiodic chains, which are further linked through weak C-H⋯N/C inter-actions into diperiodic layers.
View Article and Find Full Text PDFPuckering effects of 4-hy-droxy-l-proline isomers on the conformation of ornithine-free Gramicidin S.
Acta Crystallogr E Crystallogr Commun
September 2024
Osaka Medical and Pharmaceutical University, 4-20-1 Nasahara, Takatsuki, Osaka 590-1094, Japan.
The cyclic peptide (Val-Leu-Leu-d-Phe-Pro) (peptide ) was specifically designed for structural chemistry investigations, drawing inspiration from Gramicidin S (GS). Previous studies have shown that Pro residues within adopt a down-puckering conformation of the pyrrolidine ring. By incorporating fluoride-Pro with 4-/-isomers into , an up-puckering conformation was successfully induced.
View Article and Find Full Text PDFBis[2,3-bis-(thio-phen-2-yl)pyrido[3,4-]pyrazine]-silver(I) perchlorate methanol disolvate.
IUCrdata
April 2024
Central Connecticut State University, Department of Chemistry & Biochemistry, 1619 Stanley Street, New Britain, CT 06053, USA.
The title compound, [Ag(CHNS)]ClO·2CHOH, is monoclinic. The Ag atom is coordinated by pyrido N atoms and is two-coordinate; however, the Ag atom has nearby O atoms that can be assumed to be weakly bonded - one from the perchlorate anion and one from the methanol solvate molecule. One of the thienyl groups on a 2,3-bis-(thio-phen-2-yl)pyrido[3,4-]pyrazine is flipped disordered and was refined to occupancies of 68.
View Article and Find Full Text PDFCrystal structure and Hirshfeld surface analysis of bis-{()-'-[()-(furan-2-yl)methyl-idene]carbamo-hydrazono-thio-ato}nickel(II) methanol disolvate.
Acta Crystallogr E Crystallogr Commun
June 2023
Department of Chemistry, M.M.A.M.C (Tribhuvan University), Biratnagar, Nepal.
In the title complex, [Ni(CHNOS)]·2CHOH, the Ni atom is coordinated by the S and N atoms of two '-[()-(furan-2-yl)methyl-idene]carbamohydrazono-thioic acid ligands in a distorted square-planar geometry. The two mutual ligands bound to Ni are also connected by C-H⋯S inter-actions, while the H atoms of the NH group of the ligands form (8) motifs with the O atoms of the solvent ethyl alcohol mol-ecules. At the same time, the OH groups of the solvent ethyl alcohol mol-ecules form parallel layers to the (011) plane by the O-H⋯N inter-actions with the ligand N atom that is not bonded to the Ni atom.
View Article and Find Full Text PDFCrystal structure of bis-{3-(3,4-di-methyl-phen-yl)-5-[6-(1-pyrazol-1-yl)pyridin-2-yl]-4-1,2,4-triazol-4-ido}iron(II) methanol disolvate.
Acta Crystallogr E Crystallogr Commun
November 2022
Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska Street 64, Kyiv, 01601, Ukraine.
As a result of the high symmetry of the 2 structure, the asymmetric unit of the title compound, [Fe(CHN)]·2MeOH, consists of half of a charge-neutral complex mol-ecule and a discrete methanol mol-ecule. The planar anionic tridentate ligand 2-[5-(3,4-di-methyl-phen-yl)-4-1,2,4-triazol-3-ato]-6-(1-pyrazol-1-yl)pyridine coordinates the Fe ion meridionally through the N atoms of the pyrazole, pyridine and triazole groups, forming a pseudo-octa-hedral coordination sphere of the central ion. The average Fe-N bond distance is 1.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!