The structure of chlorobis(1,10-phenanthroline)copper(II) perchlorate

Boys, Daphne; Escobar, Carlos A.; Martínez-Carrera, S.

doi:10.1107/s0567740881002999

Cited by 27 publications

(20 citation statements)

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“…C (22) 6905 (4) 5484 (5) 5813 (5) 3.1 (2) C (23) 6731 (4) 6273 (4) 4391 ( The mean Cu-N(phenanthroline) distance of 1.998 (7) A is similar to that of 2.01 (1) A observed in aqua(1,10-phenanthroline)(thiamine pyrophosphate)-copper(II) dinitrate hydrate (Aoki & Yamasaki, 1980), while it is shorter than those obtained in the transbis(1,10-phenanthroline)copper(II) complex [mean value 2.05 (1)/~; Boys, Escobar & Martinez-Carrera, 1981].…”

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confidence: 78%

Structure of (1,10-phenanthroline)(salicylaldehydato)copper(II) nitrate

Soláns¹,

Ruiz-Ramı̀rez²,

Gasque³

et al. 1987

Acta Crystallogr C

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confidence: 78%

Structure of (1,10-phenanthroline)(salicylaldehydato)copper(II) nitrate

Soláns¹,

Ruiz-Ramı̀rez²,

Gasque³

et al. 1987

Acta Crystallogr C

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“…[25] Sano et al showed that tetrahedral and distorted squareplanar copper(II) complexes exhibit a 1s!3d electron transition, whereas square-planar complexes do not have this pre-edge feature. The last statement is illustrated by the XANES spectra of the squareplanar reference compounds dichloro(1,10-phenanthroline)-copper(II) [26] and dibromo(1,10-phenanthroline)copper(II) [27] ( Figure 1), in which no 1s!3d transition can be detected.…”

Section: Entrymentioning

confidence: 99%

Mechanistic Insights into Stereoselective Catalysis—The Effects of Counterions in a Cu^II–Bissulfoximine‐Catalyzed Diels–Alder Reaction

Bolm

Martín

Gescheidt

et al. 2007

Chemistry A European J

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The initial steps of an enantioselective Diels-Alder reaction catalyzed by a CuII-bissulfoximine complex were followed by EXAFS (EXAFS=extended X-ray absorption fine structure), EPR (EPR=electron paramagnetic resonance) spectroscopy (CW-EPR, FID-detected EPR, pulse ENDOR, HYSCORE; CW=continuous wave; ENDOR=electron nuclear double resonance; HYSCORE=hyperfine sublevel correlation; FID=free induction decay), and UV-visible spectroscopy. The complexes formed between the parent CuX2 (X=Cl-, Br-, TfO-, SbF6-) salts, the chiral bissulfoximine ligand (S,S)-1, and N-(1-oxoprop-2-en-1-yl)oxazolidin-2-one (2) as the substrate in CH2Cl2 were investigated in frozen and fluid solution. In all cases, penta- or hexacoordinated CuII centers were established. The complexes with counterions indicating high stereoselectivity (TfO- and SbF6-) reveal one unique species in which substrate 2 binds to pseudoequatorial positions (via O atoms), shifting the counterions to axial locations. On the other hand, those lacking stereoselectivity (X=Cl- and Br-) form two species in which the parent halogen anions remain at equatorial positions preventing the formation of geometries compatible with those found for X=TfO- and SbF6-.

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“…Numerous Cu in different coordination environments have been developed to study the supramolecular Cu networks [39][40][41][42]. The five coordinated copper(II) complexes which containing N,N' chelating ligands and monodentate co-ligands have diverse stereo and physicochemical properties [25][26][27][28][29][30][31][32][33][34][35][36][37]. Recently in addition to investigations of the copper(II) complexes of these ligands with simple anions such as Cl −…”

Section: Introductionmentioning

confidence: 99%

“…Due to the presence of an extended π-system, various non covalent π-interactions which mimic various biological processes, the study of these complexes have gained importance [24]. The coordination geometry of the copper(II) complexes depends on on the ligands, coligands, and counter ions [25][26][27][28][29][30][31][32][33][34][35][36][37][38]. Numerous Cu in different coordination environments have been developed to study the supramolecular Cu networks [39][40][41][42].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, crystal structures and supramolecular architectures of square pyramidal Cu(II) complexes containing aromatic chelating N,N’-donor ligands

Jennifer¹,

Muthiah²

2014

Chemistry Central Journal

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Background: Design of new metal complexes is an interesting field for development of new functional molecular-based materials. In this process by the usage of mixed functional ligands one can precisely tune the physical and chemical properties of those metal complexes. However, it is difficult to obtain the desired complex in many cases for factors like different coordination abilities of the ligands and the types of anions have a great influence on the structure.(ClO 4 ) 2 (4), and [Cu 2 (Bipy) 4 (H 2 PO 4 )] (5) (where Bipy = 2,2'-bipyridine, Phen = 1,10-phenanthroline, 4,7-Phen = 4,7-hydroxy-1,10-phenanthroline, 5-TPC = 5-chloro-2-thiophene carboxylate) has been synthesized and characterised using single crystal X-ray diffraction studies. In all the compounds, the N,N' ligand coordinates in a bidentate chelating manner and the copper has a square pyramidal geometry. Conclusions: Complexes (1,2) are expected to be isostructural due to similarity of the N.N'-chelating ligands used, but due to the difference in supramolecular architectures no similar unit cells were observed. This is important in crystal engineering point of view. Complexes (1-4) possess the neutral mononuclear and complex (5) possesses a dinuclear entity. These entities are connected by intermolecular interactions like X•••π, H•••X, (X = Cl) generating supramolecular architectures.

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The structure of chlorobis(1,10-phenanthroline)copper(II) perchlorate

Cited by 27 publications

References 2 publications

Structure of (1,10-phenanthroline)(salicylaldehydato)copper(II) nitrate

Structure of (1,10-phenanthroline)(salicylaldehydato)copper(II) nitrate

Mechanistic Insights into Stereoselective Catalysis—The Effects of Counterions in a Cu^II–Bissulfoximine‐Catalyzed Diels–Alder Reaction

Synthesis, crystal structures and supramolecular architectures of square pyramidal Cu(II) complexes containing aromatic chelating N,N’-donor ligands

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The structure of chlorobis(1,10-phenanthroline)copper(II) perchlorate

Cited by 27 publications

References 2 publications

Structure of (1,10-phenanthroline)(salicylaldehydato)copper(II) nitrate

Structure of (1,10-phenanthroline)(salicylaldehydato)copper(II) nitrate

Mechanistic Insights into Stereoselective Catalysis—The Effects of Counterions in a CuII–Bissulfoximine‐Catalyzed Diels–Alder Reaction

Synthesis, crystal structures and supramolecular architectures of square pyramidal Cu(II) complexes containing aromatic chelating N,N’-donor ligands

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Mechanistic Insights into Stereoselective Catalysis—The Effects of Counterions in a Cu^II–Bissulfoximine‐Catalyzed Diels–Alder Reaction