Structural comparison of copper(II) thiocyanate pyridine complexes

Handy, Joseph V.; Ayala, Gerardo; Pike, Robert D.

doi:10.1016/j.ica.2016.11.013

Cited by 42 publications

(28 citation statements)

References 28 publications

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“…The IR spectra of all complexes show a group of bands in the range of 2854–3108 cm −1 which are assigned to the starching vibrations of aromatic and aliphatic C‐H bonds. The intense bands due to the ν(C=N) stretching vibration of the isothiocyanate ion (NCS − ) are observed about 2027–2084 cm −1 for the complexes 2 – 4 which are consistent with the literature data . Furthermore, the bands in the range of 703–786 cm −1 are assigned to the ν(C‐S) stretching vibration .…”

Section: Resultssupporting

confidence: 89%

Exploiting the versatility of pyridyl ligands for the preparation of diorganotin (IV) adducts: spectral, crystallographic and Hirshfeld surface analysis studies

Momeni

Fathi

Abbasi

et al. 2019

Applied Organom Chemis

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Diorganotin (IV) complexes SnR 2 X 2 (R = Me, Ph; X = Cl, NCS) form a series of versatile complexes when react with bidentate substituted pyridyl ligands. The reaction of dimethyltin dichloride with 5,5′-dimethyl-2,2′-bipyridine (5,5′-Me 2 bpy) resulted in the formation of [SnMe 2 Cl 2 (5,5′-Me 2 bpy)] (1). Moreover, the reaction of SnMe 2 (NSC) 2 with 4,4′-di-tert-butyl-2,2′-bipyridine (bu 2 bpy), 1,10-phenanthroline (phen) and 4,7-diphenyl-1,10-phenanthroline (bphen) affords the hexa-coordinated complexes [SnMe 2 (NCS) 2 (bu 2 bpy)] (2), [SnMe 2 (NCS) 2 (phen)] (3) and [SnMe 2 (NCS) 2 (bphen)] (4), respectively. The resulting complexes have been characterized using elemental analysis, IR, multinuclear NMR ( 1 H, 13 C, 119 Sn) and DEPT-135°NMR spectroscopy. On the other hand, the reaction of diphenyltin dichloride with 2,2′-biquinoline (biq) and 4,7-phenantroline (4,7-phen) led to the formation of polymeric complexes of [SnPh 2 Cl 2 (4,7-phen)] n (5) and [SnPh 2 Cl 2 (biq)] n (6). The NMR spectra, however, reveal the ligand lability in solution and suggest a coordination number of 5. The X-ray crystal structures of complexes [SnMe 2 Cl 2 (5,5′-Me 2 bpy)] (1), [SnMe 2 (NCS) 2 (bu 2 bpy)] (2) and [SnMe 2 (NCS) 2 (bphen)] (4) have been determined which reveal that the geometry around the tin atom is distorted octahedral with trans-[SnMe 2 ] configuration. Interestingly, the crystal structure of (H 2 biq) 2 [SnPh 2 Cl 4 ]•2CHCl 3 (7) was characterized by X-ray crystallography from a chloroform solution of [SnPh 2 Cl 2 (biq)] n (6) indicating the formation of doubly protonated [H 2 biq] + and [Ph 2 SnCl 4 ] 2− which are stabilized by a network of hydrogen bonds with a feature of trans-[SnPh 2 ]. The 3D Hirshfeld surface analysis and 2D fingerprint maps were used for quantitative mapping out of the intermolecular interactions for 1, 2, 4 and 7 which show the presence of π-π and hydrogen bonding interactions which are associated between donor and acceptor atoms (N, S, Cl) in the solid state.

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Section: Resultssupporting

confidence: 89%

Exploiting the versatility of pyridyl ligands for the preparation of diorganotin (IV) adducts: spectral, crystallographic and Hirshfeld surface analysis studies

Momeni

Fathi

Abbasi

et al. 2019

Applied Organom Chemis

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“…There are very few coordination compounds reported with other transition metal cations like, e.g. copper that mostly consist of discrete complexes or solvates . During our investigations we obtained a number of new compounds that consist of discrete complexes with octahedrally and tetrahedrally coordinated Zn cations, which were characterized for their thermal properties and transition behavior.…”

Section: Introductionmentioning

confidence: 99%

Zn(NCS)₂‐3‐cyanopyridine Coordination Compounds: Synthesis, Crystal Structures, and Thermal Properties

Jochim

Jeß

Näther

2018

Zeitschrift anorg allge chemie

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The reaction of different stoichiometric amounts of Zn(NCS) 2 with 3-cyanopyridine in different solvents leads to the formation of several new coordination compounds, which were structurally characterized and investigated for their thermal behavior. In Zn(NCS) 2 (3-cyanopyridine) 4 (1) and Zn(NCS) 2 (3-cyanopyridine) 2 (H 2 O) 2 · (3-cyanopyridine) 2 (2) the zinc cations are octahedrally coordinated by two terminally N-bonded thiocyanate anions and four 3-cyanopyridine (1) or two 3-cyanopyridine and two water molecules (2) within slightly distorted octahedra. Zn(NCS) 2 (3-cyanopyridine) 2 (3) and Zn(NCS) 2 (3cyanopyridine) 2 ·(H 2 O) 0.5 (3-H 2 O) also form discrete complexes but 212 with tetrahedrally coordinated Zn cations. Upon heating compound 1 decomposes without the formation of any intermediate compound. In contrast, compound 2 loses the water molecules in the first step and transforms into compound 1. Surprisingly, upon further heating a second TG step is observed, in which compound 3 is formed as an intermediate, which is not observed if compound 1 is heated directly. The tetrahedral complex 3 melts leading to the formation of an amorphous phase. If the hemihydrate 3-H 2 O is heated, it transforms into 3 via melting and crystallization but there are hints that a metastable phase might form as intermediate on water removal.

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“…It has been reported that the anionic thiocyanate ligand can coordinate to a metal in various coordination modes; through N or S atom (terminal bonding) as well as through both N and S atoms (bridging bonding) . Several factors are important for coordination behaviour such as steric effects, the nature of the other ligands and the metal ion .…”

Section: Introductionmentioning

confidence: 99%

“…[13,15,16,19,46] [13] It has been reported that the anionic thiocyanate ligand can coordinate to a metal in various coordination modes; through N or S atom (terminal bonding) as well as through both N and S atoms (bridging bonding). [47] Several factors are important for coordination behaviour such as steric effects, the nature of the other ligands and the metal ion. [48] The work presented here focuses on the synthesis, spectral characterization and crystal structures of new organotin (IV) compounds [SnR 2 X 2 ] (R = Me, Et; X = Cl, SCN) containing a series of the N-donor ligands of 4,7-phenanthroline (4,7-phen), 2,2′biquinoline (biq) and 4′-(2-furyl)-2,2′:6′,2″-terpyridine (ftpy) (Scheme 2) to provide more information about their structural properties.…”

Section: Introductionmentioning

confidence: 99%

Structure–reactivity studies of chloro and isothiocyanato diorganotin (IV) complexes based on multidentate N‐donor ligands: Synthesis, spectral characterization and crystal structures

Momeni

Sefidabi

Khademi

et al. 2018

Applied Organom Chemis

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The reaction of [SnMe2Cl2] with the bidentate ligand 4,7‐phenanthroline (4,7‐phen) resulted in the formation of [SnMe2Cl2 (4,7‐phen)]n (1a) which is probably a polymeric chain in solution. On the other hand, the reaction of [SnEt2Cl2] with 4,7‐phen afforded the complex [Sn2Et4Cl4 (κ1‐N‐4,7‐phen)2(μ‐κ2‐N,N‐4,7‐phen)] (1b) which dissociates in dimethylsulfoxide solution. The reaction of [SnR2Cl2] (R = Me, Et) with 2,2′‐biquinoline (biq) yielded the complexes [SnMe2Cl2 (κ2‐N,N‐biq)] (2a) and [SnEt2Cl2 (κ1‐N‐biq)2] (2b) in the solid state. Moreover, the reaction of [SnR2Cl2] (R = Me, Et) with the tridentate ligand 4′‐(2‐furyl)‐2,2′:6′,2″‐terpyridine (ftpy) resulted in the formation of ionic penta‐ and hexa‐coordinated tin complexes [SnMe2Cl (ftpy)][SnMe2Cl3] (3a) and [SnEt2Cl (ftpy)]Cl (3b). The reaction of [SnMe2 (NCS)2] with ftpy afforded the hepta‐coordinated complex [SnMe2 (NCS)2(ftpy)] (4a). The products were fully characterized using elemental analysis, and infrared, UV–visible, multinuclear (1H, 13C, 119Sn) NMR, DEPT‐135°, HH‐COSY and HSQC NMR spectroscopies. The crystal structure of complex 3a reveals that it contains the simultaneous presence of penta‐ and hexa‐coordinated tin (IV) atoms. Notably, the crystal structure of complex 4a shows that tin (IV) is hepta‐coordinated in a pentagonal bipyramidal geometry SnC2N5 by three nitrogen atoms of ftpy, two nitrogen atoms of NCS− and two Me groups with trans‐[SnMe2] configuration. These data indicate the influence of halide or pseudo‐halide group on the coordination number and geometry of tin. Hirshfeld surface analysis and two‐dimensional fingerprint plots were calculated for 3a and 4a which show the π–π interaction between molecules in the solid is relatively weak.

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Structural comparison of copper(II) thiocyanate pyridine complexes

Cited by 42 publications

References 28 publications

Exploiting the versatility of pyridyl ligands for the preparation of diorganotin (IV) adducts: spectral, crystallographic and Hirshfeld surface analysis studies

Exploiting the versatility of pyridyl ligands for the preparation of diorganotin (IV) adducts: spectral, crystallographic and Hirshfeld surface analysis studies

Zn(NCS)₂‐3‐cyanopyridine Coordination Compounds: Synthesis, Crystal Structures, and Thermal Properties

Structure–reactivity studies of chloro and isothiocyanato diorganotin (IV) complexes based on multidentate N‐donor ligands: Synthesis, spectral characterization and crystal structures

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Structural comparison of copper(II) thiocyanate pyridine complexes

Cited by 42 publications

References 28 publications

Exploiting the versatility of pyridyl ligands for the preparation of diorganotin (IV) adducts: spectral, crystallographic and Hirshfeld surface analysis studies

Exploiting the versatility of pyridyl ligands for the preparation of diorganotin (IV) adducts: spectral, crystallographic and Hirshfeld surface analysis studies

Zn(NCS)2‐3‐cyanopyridine Coordination Compounds: Synthesis, Crystal Structures, and Thermal Properties

Structure–reactivity studies of chloro and isothiocyanato diorganotin (IV) complexes based on multidentate N‐donor ligands: Synthesis, spectral characterization and crystal structures

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Zn(NCS)₂‐3‐cyanopyridine Coordination Compounds: Synthesis, Crystal Structures, and Thermal Properties