Synthesis, Crystal Structures, and Properties of M(NCS)2‐3‐aminomethylpyridine Coordination Compounds (M = Cd, Zn)

Neumann, Tristan; Germann, Luzia S.; Moudrakovski, Igor L.; Dinnebiér, Robert E.; Cunha, César dos Santos; Terraschke, Huayna; Näther, Christian

doi:10.1002/zaac.201700250

Cited by 14 publications

(9 citation statements)

References 64 publications

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“…In the Cambridge Structural Database (CSD version 5.42, last update November 2020; Groom et al, 2016) no cobalt thiocyanate compounds with 3-(aminomethyl)pyridine as coligand are reported. However, some compounds based on Zn(NCS) 2 and Cd(NCS) 2 are published, in which the cations are always octahedrally coordinated (Neumann et al, 2017). This includes Cd(NCS) 2 [3-(aminomethyl)…”

Section: Database Surveymentioning

confidence: 99%

Synthesis, crystal structure and thermal properties of poly[bis[μ₂-3-(aminomethyl)pyridine]bis(thiocyanato)cobalt(II)]

2021

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The reaction of Co(NCS)2 with 3-(aminomethyl)pyridine as coligand leads to the formation of crystals of the title compound, [Co(NCS)2(C6H8N2)2] n , that were characterized by single-crystal X-ray analysis. In the crystal structure, the CoII cations are octahedrally coordinated by two terminal N-bonded thiocyanate anions as well as two pyridine and two amino N atoms of four symmetry-equivalent 3-(aminomethyl)pyridine coligands with all pairs of equivalent atoms in a trans position. The CoII cations are linked by the 3-(aminomethyl)pyridine coligands into layers parallel to the ac plane. These layers are further linked by intermolecular N—H...S hydrogen bonding into a three-dimensional network. The purity of the title compound was determined by X-ray powder diffraction and its thermal behavior was investigated by differential scanning calorimetry and thermogravimetry.

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Section: Database Surveymentioning

confidence: 99%

Synthesis, crystal structure and thermal properties of poly[bis[μ₂-3-(aminomethyl)pyridine]bis(thiocyanato)cobalt(II)]

2021

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“…If Co II compounds are thermally decomposed, discrete tetrahedral complexes instead of bridging compounds can be obtained, which are frequently isotypic to the corresponding Zn(NCS) 2 analogues . Therefore, the latter can be used as structure models, which is the reason why we became interested in Zn(NCS) 2 and Cd(NCS) 2 coordination compounds . For Co(NCS) 2 or Zn(NCS) 2 coordination compounds frequently different polymorphic modifications can be obtained that in some cases can be selectively prepared starting from different precursor complexes…”

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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“…Before the addition of the NH 3 solution for the [Mn(acac) 2 (H 2 O) 2 ] formation starts, the luminescence spectrum of the reactant solution shows a broad emission band with a maximum at 480 nm (Figure S7, Supporting Information). Since a solution of Mn 2+ in water alone does not show any luminescence, the emission band at 480 nm was assigned to the π*→π electronic transition of the organic ligand . This assumption is confirmed by the disappearance of this band after 2 min, following the crystallization of [Mn(acac) 2 (H 2 O) 2 ] (see previous sections).…”

Section: Resultsmentioning

confidence: 65%

In situ Monitoring of the Formation of [Bis(acetylacetonato)manganese(II)] Complexes

Pienack

Lindenberg

Doungmo

et al. 2018

Zeitschrift anorg allge chemie

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[Bis(acetylacetonato)manganese(II)] complexes are important precursors for the synthesis of catalytic MnO nanoparticles. However, the mechanism of the formation of these materials still remains unknown. In this work, a combination of ex situ and synchrotron‐based in situ powder X‐ray diffraction with in situ pH, conductivity, and turbidity measurements was applied to investigate the concentration‐dependent formation of [Mn(acac)2(H2O)2]; interestingly [Mn(acac)2(H2O)2] undergoes an expansion of the unit cell during the synthesis as well as upon heating. Increasing the temperature to 80 °C caused the conversion of solid [Mn(acac)2(H2O)2] to the trimer compound [Mn(acac)2]3, which occurs ex situ (in solid state), but is hindered in solution. [Mn(acac)2(H2O)2] emits light in the blue‐green spectral range with emission maximum at 520 nm, measured in situ under real reaction conditions during its formation due to the instability of this compound.

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Synthesis, Crystal Structures, and Properties of M(NCS)₂‐3‐aminomethylpyridine Coordination Compounds (M = Cd, Zn)

Cited by 14 publications

References 64 publications

Synthesis, crystal structure and thermal properties of poly[bis[μ₂-3-(aminomethyl)pyridine]bis(thiocyanato)cobalt(II)]

Synthesis, crystal structure and thermal properties of poly[bis[μ₂-3-(aminomethyl)pyridine]bis(thiocyanato)cobalt(II)]

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

In situ Monitoring of the Formation of [Bis(acetylacetonato)manganese(II)] Complexes

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Synthesis, Crystal Structures, and Properties of M(NCS)2‐3‐aminomethylpyridine Coordination Compounds (M = Cd, Zn)

Cited by 14 publications

References 64 publications

Synthesis, crystal structure and thermal properties of poly[bis[μ2-3-(aminomethyl)pyridine]bis(thiocyanato)cobalt(II)]

Synthesis, crystal structure and thermal properties of poly[bis[μ2-3-(aminomethyl)pyridine]bis(thiocyanato)cobalt(II)]

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

In situ Monitoring of the Formation of [Bis(acetylacetonato)manganese(II)] Complexes

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Synthesis, Crystal Structures, and Properties of M(NCS)₂‐3‐aminomethylpyridine Coordination Compounds (M = Cd, Zn)

Synthesis, crystal structure and thermal properties of poly[bis[μ₂-3-(aminomethyl)pyridine]bis(thiocyanato)cobalt(II)]

Synthesis, crystal structure and thermal properties of poly[bis[μ₂-3-(aminomethyl)pyridine]bis(thiocyanato)cobalt(II)]

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