Syntheses and crystal structures of two cadmium coordination polymers [Cd(2-mBIM)(NCS)(SCN)] n and [Cd2(2-mBIM)2(NO3)2(C4H4O4)(H2O)5] n based on bis(2-methylimidazol-1-yl)methane

Two cadmium(II) coordination polymers, [Cd(2-mBIM)(NCS)(SCN)] n (1) and [Cd 2 (2-mBIM) 2 (NO 3 ) 2 (C 4 H 4 O 4 )(H 2 O) 5 ] n (2) (2-mBIM = bis(2-methylimidazo-1-yl)methane, C 4 H 4 O 4 = succinate), have been synthesized and characterized by X-ray diffraction. Complex 1 crystallizes in the triclin...

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Bibliographic Details
Published in:Journal of coordination chemistry 2010-07, Vol.63 (13), p.2296-2306
Main Authors: Xu, Ji-Jun, Zhu, Zhu, Shi, Shao-Min, Zhou, Juan, Jin, Chuan-Ming
Format: Article
Language:English
Subjects:
Anions
Bis(2-methylimidazol-1-yl)methane
Cadmium
Crystal structure
Diffraction
Helix chain
Hydrogen bonding
Mineralogy
Nitrogen
Oxygen
Thiocyanate bridges
X-ray diffraction
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Summary:Two cadmium(II) coordination polymers, [Cd(2-mBIM)(NCS)(SCN)] n (1) and [Cd 2 (2-mBIM) 2 (NO 3 ) 2 (C 4 H 4 O 4 )(H 2 O) 5 ] n (2) (2-mBIM = bis(2-methylimidazo-1-yl)methane, C 4 H 4 O 4 = succinate), have been synthesized and characterized by X-ray diffraction. Complex 1 crystallizes in the triclinic space group P 1 with a = 9.0770(5) Å, b = 9.4043(4) Å, c = 19.8720(9) Å, α = 101.551(1)°, β = 93.498(1)°, γ = 108.484(1)°, V = 1562.02(13) Å 3 , and Z = 2. Each Cd(II) is octahedrally coordinated and connected with two adjacent Cd(II)'s by double end-to-end thiocyanate bridges, resulting in the formation of 1-D zigzag chains, linked to each other via bridging 2-mBIM giving a 2-D supramolecular framework. Complex 2 crystallizes in the monoclinic space group P2(1)/n with a = 12.6543(6) Å, b = 7.7128(4) Å, c = 17.3089(9) Å, β = 109.3980(10)°, V = 1593.45(14) Å 3 , and Z = 2. Cd(II) is coordinated with oxygen and nitrogens from two independent 2-mBIM, in a cis-configuration to form a 1-D helical structure. A 3-D supramolecular network comprised of succinate anion bridged 1-D helical chains, and weak hydrogen bonds between dimer waters gave 2-D layers.
ISSN:0095-8972
1029-0389
DOI:10.1080/00958972.2010.500376