Synthesis, structure and photoluminescence properties of naphthalene-based chiral zinc(II) complexes

Juhyun Cho; Jong Hwa Jeong; Hye Jin Shin; Kil Sik Min

doi:10.1016/j.poly.2020.114643

Synthesis, structure and photoluminescence properties of naphthalene-based chiral zinc(II) complexes

Juhyun Cho, Jong Hwa Jeong, Hye Jin Shin, Kil Sik Min

Department of Chemical Science Education

Kyungpook National University

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Two novel chiral zinc(II) complexes containing naphthalene moieties, namely [Zn(CMN)Cl₂] (1) and [Zn(CBN)Cl₂] (2), were obtained through the reaction of zinc(II) chloride with, respectively, (1R,2R)-N¹-(naphthalen-2-ylmethyl)cyclohexane-1,2-diamine (CMN) and (1R,2R)-N¹,N²-bis(naphthalen-2-ylmethyl)cyclohexane-1,2-diamine (CBN) in ethanol. The ligands CMN and CBN were characterized via infrared, nuclear magnetic resonance and absorption spectroscopic analyses. As regards to the two complexes, a comprehensive single crystal X-ray diffraction investigation showed that in both cases the zinc(II) ion is surrounded by two N atoms of CMN/CBN and two chloro groups, and has a distorted tetrahedral structure, though 2 also contains an additional naphthalene group. The photo-physical properties of 1 and 2 were examined based on their electronic absorption and photoluminescence spectra. Both complexes exhibited ultraviolet emissions (both at 335 nm in CHCl₃; 336 and 385 nm for 1 and 337 nm for 2 in their solid states) under 278–298 nm excitation.

Original language	English
Article number	114643
Journal	Polyhedron
Volume	187
DOIs	https://doi.org/10.1016/j.poly.2020.114643
State	Published - 1 Sep 2020

Keywords

Chirality
Circular dichroism
Coordination complex
Crystal structure
Photoluminescence

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@article{132ce151b19243de8f481e6204536833,

title = "Synthesis, structure and photoluminescence properties of naphthalene-based chiral zinc(II) complexes",

abstract = "Two novel chiral zinc(II) complexes containing naphthalene moieties, namely [Zn(CMN)Cl2] (1) and [Zn(CBN)Cl2] (2), were obtained through the reaction of zinc(II) chloride with, respectively, (1R,2R)-N1-(naphthalen-2-ylmethyl)cyclohexane-1,2-diamine (CMN) and (1R,2R)-N1,N2-bis(naphthalen-2-ylmethyl)cyclohexane-1,2-diamine (CBN) in ethanol. The ligands CMN and CBN were characterized via infrared, nuclear magnetic resonance and absorption spectroscopic analyses. As regards to the two complexes, a comprehensive single crystal X-ray diffraction investigation showed that in both cases the zinc(II) ion is surrounded by two N atoms of CMN/CBN and two chloro groups, and has a distorted tetrahedral structure, though 2 also contains an additional naphthalene group. The photo-physical properties of 1 and 2 were examined based on their electronic absorption and photoluminescence spectra. Both complexes exhibited ultraviolet emissions (both at 335 nm in CHCl3; 336 and 385 nm for 1 and 337 nm for 2 in their solid states) under 278–298 nm excitation.",

keywords = "Chirality, Circular dichroism, Coordination complex, Crystal structure, Photoluminescence",

author = "Juhyun Cho and Jeong, {Jong Hwa} and Shin, {Hye Jin} and Min, {Kil Sik}",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

month = sep,

day = "1",

doi = "10.1016/j.poly.2020.114643",

language = "English",

volume = "187",

journal = "Polyhedron",

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TY - JOUR

T1 - Synthesis, structure and photoluminescence properties of naphthalene-based chiral zinc(II) complexes

AU - Cho, Juhyun

AU - Jeong, Jong Hwa

AU - Shin, Hye Jin

AU - Min, Kil Sik

PY - 2020/9/1

Y1 - 2020/9/1

N2 - Two novel chiral zinc(II) complexes containing naphthalene moieties, namely [Zn(CMN)Cl2] (1) and [Zn(CBN)Cl2] (2), were obtained through the reaction of zinc(II) chloride with, respectively, (1R,2R)-N1-(naphthalen-2-ylmethyl)cyclohexane-1,2-diamine (CMN) and (1R,2R)-N1,N2-bis(naphthalen-2-ylmethyl)cyclohexane-1,2-diamine (CBN) in ethanol. The ligands CMN and CBN were characterized via infrared, nuclear magnetic resonance and absorption spectroscopic analyses. As regards to the two complexes, a comprehensive single crystal X-ray diffraction investigation showed that in both cases the zinc(II) ion is surrounded by two N atoms of CMN/CBN and two chloro groups, and has a distorted tetrahedral structure, though 2 also contains an additional naphthalene group. The photo-physical properties of 1 and 2 were examined based on their electronic absorption and photoluminescence spectra. Both complexes exhibited ultraviolet emissions (both at 335 nm in CHCl3; 336 and 385 nm for 1 and 337 nm for 2 in their solid states) under 278–298 nm excitation.

AB - Two novel chiral zinc(II) complexes containing naphthalene moieties, namely [Zn(CMN)Cl2] (1) and [Zn(CBN)Cl2] (2), were obtained through the reaction of zinc(II) chloride with, respectively, (1R,2R)-N1-(naphthalen-2-ylmethyl)cyclohexane-1,2-diamine (CMN) and (1R,2R)-N1,N2-bis(naphthalen-2-ylmethyl)cyclohexane-1,2-diamine (CBN) in ethanol. The ligands CMN and CBN were characterized via infrared, nuclear magnetic resonance and absorption spectroscopic analyses. As regards to the two complexes, a comprehensive single crystal X-ray diffraction investigation showed that in both cases the zinc(II) ion is surrounded by two N atoms of CMN/CBN and two chloro groups, and has a distorted tetrahedral structure, though 2 also contains an additional naphthalene group. The photo-physical properties of 1 and 2 were examined based on their electronic absorption and photoluminescence spectra. Both complexes exhibited ultraviolet emissions (both at 335 nm in CHCl3; 336 and 385 nm for 1 and 337 nm for 2 in their solid states) under 278–298 nm excitation.

KW - Chirality

KW - Circular dichroism

KW - Coordination complex

KW - Crystal structure

KW - Photoluminescence

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U2 - 10.1016/j.poly.2020.114643

DO - 10.1016/j.poly.2020.114643

M3 - Article

AN - SCOPUS:85086164668

SN - 0277-5387

VL - 187

JO - Polyhedron

JF - Polyhedron

M1 - 114643

ER -

Synthesis, structure and photoluminescence properties of naphthalene-based chiral zinc(II) complexes

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Keywords

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