Studies on the halogen substituted β-amino acids and their Cu(II) coordination complexes in crystallography

Chunying Zheng; Qiming Qiu; Liang Hao; Hui Li

doi:10.1007/s40242-016-5333-1

Studies on the halogen substituted β-amino acids and their Cu(II) coordination complexes in crystallography

Chunying Zheng, Qiming Qiu, Liang Hao, Hui Li^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Beijing Institute of Technology

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

8 Citations (Scopus)

Abstract

Halogen substituted β-amino acids, D,L-3-amino-3-(4-fluoro)phenylpropionic acid(D,L-HL1, 1) and D,L-3-amino-3-(4-bromo)phenylpropionic acid(D,L-HL2, 2), as well as their Cu(II) coordination complexes [Cu(L1)₂(CH₃OH)₂]·2CH₃OH(3) and [Cu(L2)₂(CH₃OH)₂]·2CH₃OH(4) were investigated and their single crystal structures were discussed in details. Supramolecular helical chains were found in β-amino acids 1 and 2 while there was no helix in their coordination complexes 3 and 4. The formation of supramolecular helixes could be due to the hydrogen bonds between terminal ―NH₃ ⁺ and adjacent ―COO^– in β-amino acids 1 and 2. While, this kind of hydrogen bonds could not be observed in their Cu(II) coordination complexes 3 and 4, in which central-symmetrical dimers could be formed via coplanar coordinated bonds(N―Cu―O) between ―NH₂ and ―COO^–.

Original language	English
Pages (from-to)	1-7
Number of pages	7
Journal	Chemical Research in Chinese Universities
Volume	32
Issue number	1
DOIs	https://doi.org/10.1007/s40242-016-5333-1
Publication status	Published - 1 Feb 2016

Keywords

Copper
Crystal structure
H-Bonding
Halogen
β-Amino acid

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title = "Studies on the halogen substituted β-amino acids and their Cu(II) coordination complexes in crystallography",

abstract = "Halogen substituted β-amino acids, D,L-3-amino-3-(4-fluoro)phenylpropionic acid(D,L-HL1, 1) and D,L-3-amino-3-(4-bromo)phenylpropionic acid(D,L-HL2, 2), as well as their Cu(II) coordination complexes [Cu(L1)2(CH3OH)2]·2CH3OH(3) and [Cu(L2)2(CH3OH)2]·2CH3OH(4) were investigated and their single crystal structures were discussed in details. Supramolecular helical chains were found in β-amino acids 1 and 2 while there was no helix in their coordination complexes 3 and 4. The formation of supramolecular helixes could be due to the hydrogen bonds between terminal ―NH3 + and adjacent ―COO– in β-amino acids 1 and 2. While, this kind of hydrogen bonds could not be observed in their Cu(II) coordination complexes 3 and 4, in which central-symmetrical dimers could be formed via coplanar coordinated bonds(N―Cu―O) between ―NH2 and ―COO–.",

keywords = "Copper, Crystal structure, H-Bonding, Halogen, β-Amino acid",

author = "Chunying Zheng and Qiming Qiu and Liang Hao and Hui Li",

note = "Publisher Copyright: {\textcopyright} 2016, Jilin University, The Editorial Department of Chemical Research in Chinese Universities and Springer-Verlag GmbH.",

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T1 - Studies on the halogen substituted β-amino acids and their Cu(II) coordination complexes in crystallography

AU - Zheng, Chunying

AU - Qiu, Qiming

AU - Hao, Liang

AU - Li, Hui

PY - 2016/2/1

Y1 - 2016/2/1

N2 - Halogen substituted β-amino acids, D,L-3-amino-3-(4-fluoro)phenylpropionic acid(D,L-HL1, 1) and D,L-3-amino-3-(4-bromo)phenylpropionic acid(D,L-HL2, 2), as well as their Cu(II) coordination complexes [Cu(L1)2(CH3OH)2]·2CH3OH(3) and [Cu(L2)2(CH3OH)2]·2CH3OH(4) were investigated and their single crystal structures were discussed in details. Supramolecular helical chains were found in β-amino acids 1 and 2 while there was no helix in their coordination complexes 3 and 4. The formation of supramolecular helixes could be due to the hydrogen bonds between terminal ―NH3 + and adjacent ―COO– in β-amino acids 1 and 2. While, this kind of hydrogen bonds could not be observed in their Cu(II) coordination complexes 3 and 4, in which central-symmetrical dimers could be formed via coplanar coordinated bonds(N―Cu―O) between ―NH2 and ―COO–.

AB - Halogen substituted β-amino acids, D,L-3-amino-3-(4-fluoro)phenylpropionic acid(D,L-HL1, 1) and D,L-3-amino-3-(4-bromo)phenylpropionic acid(D,L-HL2, 2), as well as their Cu(II) coordination complexes [Cu(L1)2(CH3OH)2]·2CH3OH(3) and [Cu(L2)2(CH3OH)2]·2CH3OH(4) were investigated and their single crystal structures were discussed in details. Supramolecular helical chains were found in β-amino acids 1 and 2 while there was no helix in their coordination complexes 3 and 4. The formation of supramolecular helixes could be due to the hydrogen bonds between terminal ―NH3 + and adjacent ―COO– in β-amino acids 1 and 2. While, this kind of hydrogen bonds could not be observed in their Cu(II) coordination complexes 3 and 4, in which central-symmetrical dimers could be formed via coplanar coordinated bonds(N―Cu―O) between ―NH2 and ―COO–.

KW - Copper

KW - Crystal structure

KW - H-Bonding

KW - Halogen

KW - β-Amino acid

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U2 - 10.1007/s40242-016-5333-1

DO - 10.1007/s40242-016-5333-1

M3 - Article

AN - SCOPUS:84955608812

SN - 1005-9040

VL - 32

SP - 1

EP - 7

JO - Chemical Research in Chinese Universities

JF - Chemical Research in Chinese Universities

IS - 1

ER -

Studies on the halogen substituted β-amino acids and their Cu(II) coordination complexes in crystallography

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