Home Crystal structure of catena-poly[tetraaqua-(μ2-4,4′-bipyridine-k2N:N′)-bis(μ2-4′-methyl-[1,1′-biphenyl]-3,5-dicarboxylato-k4O,O′:O″,O′″)dicadmium(II)] dihydrate, C20H20NO7Cd
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Crystal structure of catena-poly[tetraaqua-(μ2-4,4′-bipyridine-k2N:N′)-bis(μ2-4′-methyl-[1,1′-biphenyl]-3,5-dicarboxylato-k4O,O′:O″,O′″)dicadmium(II)] dihydrate, C20H20NO7Cd

  • Shi-Jun Chen , Xin Cao , Xin-Dong Ma , Zhong-Chen Xi and Shi-Hui Li ORCID logo EMAIL logo
Published/Copyright: March 1, 2021

Abstract

C20H20NO7Cd, triclinic, P1 (no. 2), a = 9.9506(8) Å, b = 10.1867(11) Å, c = 11.2774(11) Å, α = 110.528(9)°, β = 93.830(7)°, γ = 107.307(8)°, V = 1003.18(17) Å3, Z = 2, Rgt(F) = 0.0775, wRref(F2) = 0.2051, T = 293(2) K.

Table 1 contains crystallographic data and Table 2 contains the list of the atoms including atomic coordinates and displacement parameters.

Table 1:

Data collection and handling.

Crystal:Colourless block
Size:0.42 × 0.32 × 0.25 mm
Wavelength:Mo Kα radiation (0.71073 Å)
μ:1.13 mm−1
Diffractometer, scan mode:SuperNova, ω
θmax, completeness:25.5°, >99%
N(hkl)measured, N(hkl)unique, Rint:9906, 3720, 0.065
Criterion for Iobs, N(hkl)gt:Iobs > 2 σ(Iobs), 2947
N(param)refined:264
Programs:CrysAlisPRO [1], SHELX [2], [, 3]
Table 2:

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2).

AtomxyzUiso*/Ueq
C10.8023 (13)−0.0773 (12)0.1803 (11)0.071 (2)
H10.7247−0.15410.18240.085*
C20.8571 (13)−0.0999 (13)0.0681 (12)0.076 (3)
H20.8168−0.1905−0.00210.091*
C30.9704 (11)0.0106 (11)0.0599 (10)0.0494 (19)
C41.0190 (11)0.1401 (11)0.1639 (10)0.0526 (19)
H41.09230.22090.16240.063*
C50.9589 (11)0.1531 (11)0.2744 (10)0.0532 (19)
H50.99660.24340.34530.064*
C60.6993 (10)0.3530 (10)0.5359 (9)0.0430 (14)
C70.6624 (10)0.4918 (10)0.5936 (9)0.0432 (14)
C80.7056 (10)0.6051 (10)0.5503 (9)0.0389 (14)
H80.75870.59650.48500.047*
C90.6700 (10)0.7325 (10)0.6039 (9)0.0422 (15)
C100.5913 (10)0.7447 (10)0.7018 (9)0.0429 (15)
H100.56780.83040.73740.052*
C110.5467 (10)0.6319 (10)0.7481 (9)0.0411 (14)
C120.5856 (10)0.5066 (10)0.6939 (9)0.0428 (14)
H120.55990.43110.72500.051*
C130.4547 (11)0.6418 (11)0.8476 (10)0.0466 (15)
C140.4272 (12)0.7655 (12)0.9140 (11)0.0623 (18)
H140.47360.85190.90120.075*
C150.3348 (12)0.7736 (13)1.0000 (11)0.0660 (19)
H150.31950.86321.04060.079*
C160.2674 (12)0.6564 (12)1.0260 (11)0.0580 (18)
C170.2869 (12)0.5279 (13)0.9586 (11)0.0632 (18)
H170.24030.44260.97290.076*
C180.3759 (12)0.5197 (12)0.8675 (11)0.0602 (17)
H180.38140.42730.81850.072*
C190.7116 (10)0.8543 (10)0.5566 (9)0.0417 (15)
C200.1659 (13)0.6633 (15)1.1205 (12)0.077 (3)
H20A0.12700.74031.12540.115*
H20B0.21710.68491.20420.115*
H20C0.08940.56901.09180.115*
Cd10.76026 (7)0.08605 (6)0.46903 (6)0.0344 (3)
N10.8543 (9)0.0482 (8)0.2853 (7)0.0441 (19)
O10.0710 (9)0.5222 (9)0.6983 (8)0.076 (2)
H1A0.07900.55500.63840.114*
H1B0.05050.42810.66610.114*
O20.5388 (7)−0.0679 (7)0.3311 (6)0.0482 (16)
H2A0.4823−0.14390.36320.072*
H2B0.4569−0.02020.34980.072*
O30.9828 (7)0.2177 (7)0.5981 (7)0.0528 (17)
H3A0.97360.26310.67490.079*
H3B1.02670.28760.57470.079*
O40.6516 (7)0.2497 (6)0.5741 (7)0.0472 (16)
O50.7754 (8)0.3414 (7)0.4523 (7)0.0521 (17)
O60.7745 (7)0.8417 (7)0.4609 (7)0.0470 (16)
O70.6852 (7)0.9726 (7)0.6131 (7)0.0453 (16)

Source of material

A mixture of Cd(NO3)2⋅2H2O (0.1 mmol, 0.0272 g), 4′-methyl-[1,1′-biphenyl]-3,5-dicarboxylic acid (0.1 mmol, 0.0256 g) (H2mbdc), 4,4′-bipyridine (0.1 mmol, 0.0156 g), and distilled water (10 mL) was heated in a 25 mL stainless steel reactor with a Teflon liner at 443 K for 26 h, followed by slow cooling to room temperature. Colourless crystals of the compound formed.

Experimental details

Coordinates of hydrogen atoms were refined without any constraints or restraints. Their Uiso values were set to 1.2Ueq of the parent atoms.

Comment

In the last two decades, a large number of mixed ligands metal-organic frameworks (MOFs) and coordination polymers (CPs) have been reported in the literature. Mixed ligands–MOFs and CPs can be constructed from metal ions and carboxylic acid and nitrogen-containing ligands. N-containing ligands normally coordinate as neutral tectons [4], [, 5]. Among organic aromatic multicarboxylates like the 4′-methyl-[1,1′-biphenyl]-3,5-dicarboxylato can yield predetermined networks [6], [7], [8], [9], [10]. Additionally, 4,4′-bipyridine serves as bridging ligand [11], [12], [13], [14], [15].

In the title complex, there are one Cd(II) ion, two coordinated water molecules one mbdc ligand, and one half of the 4,4′-bipyridine ligand, and finally one uncoordinated water molecule in the asymmetric unit (see the Figure). The cadmium atom Cd1 is seven-coordinated by four O atoms from the mbdc ligands, two water ligands, and one N atom from the 4,4′-bipyridine ligand from the axial positions (see the Figure). The Cd–N bond length is 2.287(7) Å and the Cd–O ones are in the range of 2.283(6) to 2.634(6) Å.


Corresponding author: Shi-Hui Li, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, Henan471934, P. R. China, E-mail:

Funding source: Key Scientific Research Project for Universities of Henan Province

Award Identifier / Grant number: 21A413001, 20A150028

Funding source: Science and Technology Research Project of Henan Province

Award Identifier / Grant number: 212102310991

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: This research was funded by Key Scientific Research Project for Universities of Henan Province (No. 21A413001; No. 20A150028) and Science and Technology Research Project of Henan Province (No. 212102310991).

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2021-01-23
Accepted: 2021-02-11
Published Online: 2021-03-01
Published in Print: 2021-05-26

© 2021 Shi-Jun Chen et al., published by De Gruyter, Berlin/Boston

This work is licensed under the Creative Commons Attribution 4.0 International License.

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