scholarly journals DIRECT SYNTHESIS AND CRYSTAL STRUCTURE OF BIS(BROMIDO-BIS(1,10 PHENANTHROLINE)-COPPER(II)) NITROPRUSSIDE DIMETHYLFORMAMIDE SOLVATE

2018 ◽  
pp. 15-18
Author(s):  
O. Vassilyeva ◽  
E. Buvaylo ◽  
B. Skelton
Keyword(s):  
Crystal Structure ◽  
Self Assembly ◽  
Direct Synthesis ◽  
Solvent Molecule ◽  
The Self ◽  
Coordination Geometry ◽  
Synthesis And Crystal Structure ◽  
Copper Coordination ◽  
Bromide Ion ◽  
Nitroprusside Anion

The title compound, [Cu(C12H8N2)2Br]2[Fe(CN)5(NO)]·C3H7NO, was prepared by the self-assembly of nitroprusside anion and Cu cation containing a bidentate amine in the reaction of copper powder and sodium nitroprusside with NH4Br and 1,10-phenanthroline (phen) in dimethylformamide (DMF). The complex is formed of discrete [Cu(phen)2Br]+ cations, nitroprusside [Fe(CN)5(NO)]2– anions and DMF molecules of crystallization. The cation has no crystallographically imposed symmetry; the metal atom coordinates two nitrogen atoms of two phen molecules and bromide ion. The copper coordination geometry is intermediate between a square pyramid and a trigonal bipyramid. The [Fe(CN)5(NO)]2– anion is located on an inversion centre with the nitrosyl group modelled as disordered with one of the CN groups. The DMF solvent molecule was found to be disordered about the crystallographic inversion centre; geometries were restrained to ideal values. In the solid state, alternating layers of cations and of anions plus DMF molecules are stacked along the b axis.

Synthesis and crystal structure of an M 4 L 6 tetrahedral cage with outward-facing pockets from a substituted pyrazolyl–pyridine ligand

2018 ◽  
Vol 74 (8) ◽  
pp. 961-966
Author(s):  
Nawal K. Al Rasbi ◽  
Michael D. Ward
Keyword(s):  
Crystal Structure ◽  
Self Assembly ◽  
The Self ◽  
Pyridyl Ring ◽  
Current Interest ◽  
Pyridine Ligand ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Polydentate Ligands ◽  
Tetrahedral Complexes

The self-assembly of metal–polydentate ligands to give supramolecular tetrahedral complexes is of considerable current interest. A new ligand, 4-benzyl-2-[1-(2-{[3-(4-benzylpyridin-2-yl)-1H-pyrazol-1-yl]methyl}benzyl)-1H-pyrazol-3-yl]pyridine (L), with chelating pyrazolyl–pyridine units substituted on the 4-position of the pyridyl ring with benzyl units, has been synthesized and fully characterized. The self-assembly of L with cobalt(II) gave rise to a tetrahedral cage (hexakis{μ-4-benzyl-2-[1-(2-{[3-(4-benzylpyridin-2-yl)-1H-pyrazol-1-yl]methyl}benzyl)-1H-pyrazol-3-yl]pyridine}perchloratotetracobalt(II) octakis(perchlorate) acetonitrile undecasolvate, [Co4(ClO4)(C38H32N6)6](ClO4)7·11CH3CN) with approximate T symmetry. The X-ray crystal structure of the cage, i.e. [Co4 L 6\subsetClO4](ClO4)7, shows that the substituted benzyl groups are oriented away from the centres of their respective ligands towards the CoII vertices, making small outward-facing pockets from three benzyl rings at the corners of the tetrahedron.

Copper(i) halide cluster-based coordination polymers modulated by chiral ditopic dithiodianthranilide ligands: synthesis, crystal structure and photoluminescence

CrystEngComm ◽  
2021 ◽  
Author(s):  
Jarosław Chojnacki ◽  
Michał Mońka ◽  
Illia E. Serdiuk ◽  
Piotr Bojarski ◽  
Tadeusz Połoński ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Coordination Polymers ◽  
Self Assembly ◽  
Spectroscopic Properties ◽  
The Self ◽  
Halide Cluster

The influence of ligand chirality on the self-assembly and spectroscopic properties of copper(i) halide coordination polymers was investigated.

scholarly journals Crystal structure of bis[(R,R)-1,2-(binaphthylphosphonito)ethane]dichloridoiron(II) dichloromethane disolvate

2020 ◽  
Vol 76 (9) ◽  
pp. 1525-1527
Author(s):  
Benjamin E. Rennie ◽  
Alan J. Lough ◽  
Robert H. Morris
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Title Compound ◽  
Rotation Axis ◽  
Solvent Molecule ◽  
Octahedral Coordination ◽  
Coordination Geometry ◽  
Asymmetric Unit ◽  
Π Interactions

In the title compound (systematic name: bis{1,2-bis[12,14-dioxa-13-phosphapentacyclo[13.8.0.02,11.03,8.018,23]tricosa-1(15),2(11),3(8),4,6,9,16,18(23),19,21-decaen-13-yl]ethane}dichloridoiron(II) dichloromethane disolvate), [FeCl2(C42H28O4P2)2]·2CH2Cl2, the FeII ion lies on a crystallographic twofold rotation axis and is coordinated by four P atoms from two (R,R)-1,2-bis(binaphthylphosphonito)ethane (BPE) ligands and two Cl ligands in a distorted cis-FeCl2P4 octahedral coordination geometry. In the crystal, weak C—H...O and C—H...π interactions link the molecules into layers lying parallel to (001). A weak intramolecular C—H...O hydrogen bond is also observed. The asymmetric unit contains one CH2Cl2 solvent molecule, which is disordered over two sets of site with refined occupancies in the ratio 0.700 (6):0.300 (6).

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