English

• 0.   Introduction

  The keen interest in the design and fabrication of coordination polymers (CPs) has flourished as an emerging area of research because of their impressive structural topologies and promising application in guest molecule inclusion, gas and vapor storage, chemical sensing, magnetism, heterogeneous catalysis, etc^[1-5].Over the past decades, numerous CPs have been successfully constructed, and crystal engineering has reached a relatively mature level that some CPs with specific topologies can be designed by the judicious selection of metal ions and organic ligands^[6-7]. In this regard, a very promising approach is the use of mixed ligands such as N-donor heterocyclic ligands together with polycarboxylate organic co-linkers in the same system^[8-11]. N-donor heterocyclic ligands, particularly pyrazole-based flexible or rigid linkers, are acclaimed for their high thermal stability and interesting structural topologies^[12-14].Aromatic polycarboxylates are used extensively as organic co-linkers since they often produce inherently rigid structures which have potential application in gas adsorption and storages^[15].Keeping this in mind, in this contribution, we report the syntheses and characterization of two new 2D isomorphic coordination polymers with 3-(1H-pyrazol-4-yl)-5-(pyridin-2-yl)-1, 2, 4-triazole and 1, 2, 4, 5-benze-netetracarboxylic acid (Scheme 1).The compounds are formulated as [Co(btec)_0.5(H₂L)]_n (1), [Cu(btec)_0.5(H₂L)]_n (2).

  Scheme 1

  

  图 Scheme 1  Coordination modes of H₂L and btec^4-

  Scheme 1.  Coordination modes of H₂L and btec^4-

  下载: 全尺寸图片 幻灯片

  1.   Experimental

  1.1   General

  All reagents used in the syntheses were of analytical grade.Elemental analyses for carbon, hydrogen and nitrogen were performed on a Vario EL Ⅲ elemental analyzer.The infrared spectra (4 000~600 cm^-1) were recorded by using KBr pellet on an Avatar^TM 360 E.S.P.IR spectrometer.The powder X-ray diffraction patterns (PXRDs) were recorded with a Bruker AXS D8 Advance diffractometer using mono-chromated Cu Kα radiation (λ=0.154 18 nm, 2θ=5°~50°), in which the X-ray tube was operated at 40 kV and 40 mA.Magnetic measurements were carried out with a Quantum Design MPMS XL-7 SQUID-VSM magnetometer.Pascal′s constants were used to determine the diamagnetic corrections.

  1.2   Preparation of compounds 1 and 2

  A mixture of Co(NO₃)₂·4H₂O (0.30 mmol, 87.3 mg), H₂L (0.1 mmol, 21.2 mg), and H₄btec (0.2 mmol, 50.8 mg) was dissolved in 8 mL mixed solvent of CH₃CN/H₂O (1:4, V/V), then sealed in a 25 mL Teflon-lined stainless steel vessel and heated at 160 ℃ for 72 h.After cooling to room temperature, the dark red block crystals were obtained and then washed with alcohol for several times and filtered to give pure crystals of 1. Anal. Calcd. for C₁₅H₉CoN₆O₄(%):C 45.47, H 2.29, N 21.21.Found(%):C 45.51, H 2.25, N 21.18.IR (KBr, cm^-1):2 973, 2 901, 2 352, 1 745, 1 694w, 1 551, 1 458, 1 361, 1 053, 884 808, 732, 673.Compound 2 was obtained by hydrothermal procedure as that for the preparation of compound 1 only using Cu(OAc)₂·H₂O (0.1 mmol, 19.9 mg), distilled water and 125 ℃ instead of Co(NO₃)₂·4H₂O, mixed solvent of CH₃CN/H₂O and 150 ℃.Green block crystals of 2 were collected.Anal.Calcd.for C₁₅H₉CuN₆O₄(%):C 44.95, H 2.26, N 20.96.Found(%):C 44.89, H 2.23, N 20.91.IR (KBr, cm^-1):2 985, 2 905, 2 366, 1 746, 1 709, 1 556, 1 513, 1 466, 1 350, 1 046, 883, 805, 733, 679.

  1.3   X-ray crystallography

  Diffraction intensity data of the single crystals of 1 and 2 were collected on a Rigaku oxford diffraction equipped with a graphite monochromated Mo Kα radiation (λ=0.071 073 nm) by using the X-scan technique at 293(2) K.The structures were solved by direct methods and refined on F² by full matrix least squares using SHELXTL^[16]. All non-hydrogen atoms were refined anisotropically.The hydrogen atoms were located by geometrically calculations, and their thermal parameters were fixed during the structure refinement.Crystallographic data and details of refinement for compounds 1 and 2 are reported in Table 1.Selected bond distances and angles are given in Table 2.

  表 1

  

  表 1  Crystal data and structure refinement for compounds 1 and 2

  Table 1.  Crystal data and structure refinement for compounds 1 and 2

  下载: 导出CSV

  Compound	1	2
  Empirical formula	C15H9CoN6O4	C15H9CuN6O4
  Formula weight	396.21	400.82
  Crystal system	Orthorhombic	Orthorhombic
  Space group	Pbca	Pbca
  a/nm	1.562 59(7)	1.547 75(6)
  b/ nm	1.162 10(5)	1.139 13(4)
  c/nm	1.724 75(7)	1.779 80(8)
  Volume/nm3	3.132 0(2)	3.137 9(2)
  Z	8	8
  Dc/(g·cm-3)	1.681	1.697
  Absorption coefficient/mm-1	1.133	1.429
  F(000)	1 600.0	1 616.0
  2θ range for data collection/(°)	6.714-50.984	6.764-50.992
  Index range	-18≤h ≤8, -15≤k≤13, -20≤l≤11	-18≤h ≤13, -13≤k≤13, -16≤l≤21
  Reflections collected	9 140	9 590
  Independent reflections	2 892 (RInt]0.026 7)	2 857 (RInt=0.028 3)
  Data, restraint, parameter	2 892, 0, 243	2 857, 0, 235
  Goodness-of-fit on/F2	1.038	1.084
  Final R indexes[I≥2σ(I)]	R1=0.033 6, wR2=0.074 8	R1=0.039 9, wR2=0.093 2
  Final R indexes (all data)	R1=0.043 4, wR2=0.078 4	R1=0.046 7, wR2=0.096 1
  Largest diff. peak and hole /(e·nm-3)	590 and -370	470 and -460

  表 2

  

  表 2  Seclected bond lengths (nm) and bond angles (°) for compounds 1 and 2

  Table 2.  Seclected bond lengths (nm) and bond angles (°) for compounds 1 and 2

  下载: 导出CSV

  1
  Co(1)-O(1)	0.204 06(16) Co(1)-N(1)	0.212 6(2)	O(4)-Co(1)#1	0.203 02(17)
  Co(1)-O(4)#1	0.203 03(17)	N(6)-Co(1)#1	0.212 1(2)
  O(4)#2-Co(1)-N(6)#1	133.91(7)	O(4)#2-Co(1)-O(1)	112.77(7)	O(4)#2-Co(1)-N(1)	91.77(8)
  N(6)#1-Co(1)-N(1)	96.99(8)	N(1)-Co(1)-N(3)#1	171.20(7)	O(4)#2-Co(1)-N(3)#1	87.27(8)
  O(1)-Co(1)-N(6)#1	109.69(7)	N(6)#1-Co(1)-N(3)#1	77.55(7)
  2
  Cu(1)-O(1)	0.200 7(2)	Cu(1)-N(1)	0.211 8(3)	Cu(1)-N(5)#2	0.199 4(3)
  Cu(1)-O(3)#1	0.218 1(2)	Cu(1)-N(2)	0.199 1(3)
  N(5)#2-Cu(1)-O(3)#1	98.07(10)	O(1)-Cu(1)-N(1)	135.76(10)	N(5)#2-Cu(1)-N(1)	94.16(11)
  N(2)-Cu(1)-N(5)#2	171.79(11) N(1)-Cu(1)-O(3)#1	108.09(10)	N(2)-Cu(1)-N(1)	79.89(10)
  N(5)#2-Cu(1)-O(1)	89.78(11)	N(2)-Cu(1)-O(1)	90.58(10)
  Symmetry codes:#1:1-x, -1/2+y, 3/2-z; #2:1-x, 1/2+y, 3/2-z for 1; #1:x, 3/2-y, -1/2+z; #2:1-x, -1/2+y, 1/2-z for 2.

  CCDC:1559405, 1; 1559419, 2.

  2.   Results and discussion

  2.1   Crystal structure description

  Single crystal X-ray analysis reveals that compounds 1 and 2 are isomorphic, and hence only the structure of 1 is given in the ensuing discussion.The asymmetry unit contains one Co(Ⅱ) ion, half btec^4- ligand, and one H₂L ligand (Fig. 1a).Each Co(Ⅱ) center is penta-coordinated by three N atoms from two different H₂L ligands (Co(1)-N(1) 0.212 6(2) nm, Co(1)-N(3)#2 0.216 50(19) nm, and Co(1)-N(6)#2 0.212 1(2) nm) and two O atoms from two different btec^4- ligands (Co(1)-O(1) 0.204 06(16) nm, Co(1)-O(4)#1 0.203 03(17) nm) showing a distorted trigonal bipyramid coordination geometry.The O-Co-N bond angles vary from 87.28(7)° to 133.90(7)°. The O-Co-O bond angle is 112.77(7)° matching those of previously reported cobalt(Ⅱ) compounds^[17].

  图 1

  

  图 1  (a) Coordination geometry of the Co(Ⅱ) ion in 1; (b) 2D layer [Co₄(btec)]⁴⁺ in 1; (c) 1D chain [Co(H₂L)]²⁺ in 1; (d) 2D network of 1

  Figure 1.  (a) Coordination geometry of the Co(Ⅱ) ion in 1; (b) 2D layer [Co₄(btec)]⁴⁺ in 1; (c) 1D chain [Co(H₂L)]²⁺ in 1; (d) 2D network of 1

  下载: 全尺寸图片 幻灯片

  It is noteworthy that the H₄btec is completely deprotonated in the formation of the compound 1.The four carboxyl groups of btec^4- ligand in compound 1 exhibit the same coordination modes (μ₁-η¹:η⁰, μ₁-η¹:η⁰, μ₁-η¹:η⁰, μ₁-η¹:η⁰) (Scheme 1b) and link neighboring four Co(Ⅱ) ions forming two-dimensional [Co₄(btec)]⁴⁺ structure with the Co…Co separations of 0.637 5 and 0.920 0 nm, respectively (Fig. 1b).On the other hand, H₂L ligands adopt the μ₃-bridging+chelating modes (Scheme 1a) to bind two Co(Ⅱ) ions forming 1D helix chain with the Co…Co separations of 0.637 5 nm (Fig. 1c).The H₂L ligands link the two-dimensional [Co₄(btec)]⁴⁺ plane through Co-N coordination interac-tions to give a two-dimensional network as illustrated in Fig. 1d.In the crystal packing, there are H-bonding interactions between triazole nitrogen atom and carboxyl groups of btec^4- ligand (N(2)-H(2)…O(2):d_H…O=0.172(3) nm, d_N…O=0.262 5(3) nm, ∠N-H…O=173(3)°; N(5)-H(5)…O(3)#1:d_H…O=0.199 nm, d_N…O=0.281 8(3) nm, ∠N-H…O=159.9°, Symmetry codes:#1:3/2-x, 1/2+y, z).Analysis of the crystal packing also reveals the presence of face to face π…π stacking contacts between the neighbouring 2D layers.The triazole ring (C4-N3-C5-N4-N5) and pyridyl ring (C6-C7-C8-C9-C10-N6) of the neighbouring layers are almost parallel to each other with the dihedral angle of 1.028°.The perpendicular distance between the involved pyridyl and coordinated triazole ring is 0.338 6 nm.The centroid-to-centroid distance between the involved pyridyl and coordinated triazole ring is 0.355 2 nm.As a result, these coordination layers are further extended along the c-axis via such secondary interactions to form a 3D supramolecular lattice.

  2.2   PXRD study

  Phase purities of the materials of 1 and 2 were confirmed by powder X-ray diffraction (PXRD) patterns (Fig. 2).The experimental and simulated PXRD patterns agree well with each other, confirming the good phase purity.The slight difference in intensity may arise from the preferred orientation of crystalline powder samples.

  图 2

  

  图 2  PXRD patterns of 1 and 2

  Figure 2.  PXRD patterns of 1 and 2

  下载: 全尺寸图片 幻灯片

  2.3   Magnetic properties of the compounds

  According to the structural data, compound 1 contains Co(Ⅱ) chain interlinked by the H₂L and btec^4- ligands.Considering the interchain Co…Co distance (0.637 5 nm) with Co-O-C-C-C-C-O-Co pathway, the system could be treated as magnetically isolated 1D chain.Variable-temperature magnetic susceptibility of 1 was carried out at 2 000 Oe and from 2.0 to 300 K on a polycrystalline sample.As shown in Fig. 3, the χ_MT value at 300 K is 1.86 cm³·moL^-1·K, which is slightly lower than the expected value (1.88 cm³·moL^-1 ·K) of one magnetically isolated spin-only Co(Ⅱ) ion.As T is lowered, χ_MT continuously increases and reaches a local maximum of 5.02 cm³·moL^-1·K at 14 K, and then dropping quickly to 1.69 cm³·moL^-1·K at 2.0 K.This behaviour may indicate the occurrence of a weak ferromagnetic interaction.

  图 3

  

  图 3  Plots of χ_MT(□) and χ_M(○) versus T for 1

  Figure 3.  Plots of χ_MT(□) and χ_M(○) versus T for 1

  下载: 全尺寸图片 幻灯片

  The magnetic susceptibility in the range of 21~300 K obeys the Curie-Weiss law with a Curie constant C=3.01 cm³·moL^-1·K, which is close to the experi-mental value 3.39 cm³·moL^-1·K for an octahedral Co(Ⅱ) ion, and a positive Weiss constant θ of 3.39 K.The Curie constant for spin-only Co(Ⅱ) ion is 1.875 cm³·moL^-1·K; the relatively bigger C value for 1 should arise from the significant spin-orbit coupling of Co(Ⅱ) ion.The positive θ value indicates dominating ferro-magnetic interactions between the neighbouring Co(Ⅱ) ions via the Co-O-C-C-C-C-O-Co pathway.In order to understand quantitatively the magnitude of magnetic interaction, a 1D chain model has been utilized to simulate the experimental magnetic behavior.Then the interaction (J) can be expressed by the spin Hamilto-nian H=-J∑S_iS_i+1.In the classical-spin approximation, the following expression (Eq.1) of magnetic susceptibi-lity was deduced by Fisher^[18].

  $ {\chi _{{\text{chain}}}} = \frac{{N{g^2}{\beta ^2}S\left( {S + 1} \right)}}{{3kT}}\left( {\frac{{1 + \mu }}{{1-\mu }}} \right) $

  where μ is the Langevin function, μ=coth[JS(S+1)/(kT)]-kT/[JS(S+1)], with S=3/2. The best simulation of the experimental data of 1 lead to J=0.72 cm^-1, g=1.99 with an agreement factor (defined as R=∑[(χ_M)_obs-(χ_M)_calc]²/∑(χ_M)_obs²) of 8.5×10^-3. The solid lines in Fig. 3 show that the data in the 21~300 K rang are accommodated by Eq.1.The result indicates that there is a weak ferromagnetic interaction between Co(Ⅱ) ions in 1.

  Similar to structural analysis of compound 1, there are 1D Cu(Ⅱ) chains with the Cu…Cu distance of 0.625 1 nm in compound 2.Magnetic susceptibility of 2 was measured at 2 000 Oe and from 2.0 to 300 K on a polycrystalline sample.As shown in Fig. 4, the χ_MT value at room temperature is 0.374 cm³·moL^-1·K, which is very close to the expected value for one uncoupled spin (C=0.374 cm³·moL^-1·K, S=1/2, g=2) of Cu(Ⅱ).As the temperature is lowered to 2 K, the χ_MT products decrease first slowly and then rapidly.This behavior suggests that antiferromagnetic interaction is operative in 2.To simulate the experimental magnetic interactions in the system, we used the analytical expression for a one-dimensional Heisenberg chain of classical spins (S=1/2)^[19]:

  $ {\chi _{\text{M}}} = \left[{N{g^2}{\beta ^2}/\left( {kT} \right)} \right]\left[{\left( {A + Bx + C{x^2}} \right)/\left( {1 + Dx + E{x^2} + F{x^3}} \right)} \right] $

  图 4

  

  图 4  Plots of χ_MT(□) and χ_M(○) versus T for 2

  Figure 4.  Plots of χ_MT(□) and χ_M(○) versus T for 2

  下载: 全尺寸图片 幻灯片

  Where χ_M denotes the susceptibility per Cu(Ⅱ) compo-und, x=|J|/(kT), A=0.25, B=0.149 95, C=0.300 94, D=1.986 2, E=0.688 54, and F=6.062 6.

  The least-squares analysis of the magnetic susce-ptibility data led to J=-0.23 cm^-1, g=2.00, and R=1.1 ×10^-3.The result indicates the typical feature of paramagnetic behavior in compound 2.

  3.   Conclusions

  In summary, two isomorphic compounds have been generated from mixed-ligands system of the 3-(1H-pyrazol-4-yl)-5-(pyridin-2-yl)-1, 2, 4-triazole and aromatic carboxylic acid ligands, which display the same 2D net.Aromatic carboxylic acids are introduced not only to balance the charge but also to coordinate with metal ions, with the aim of obtaining novel products.Accordingly, our present findings will further enrich the crystal engineering strategy and offer the possibility of controlling the formation of the desired network structures.Magnetic studies reveal weak ferromagnetic and paramagnetic behavior in 1 and 2, respectively.

• 1. [1]

     Cowan M G, Miller R G, Southon P D, et al. Inorg. Chem., 2014, 53:12076-12083 doi: 10.1021/ic501876m

  2. [2]

     Goswami S, Adhikary A, Jena H S, et al. Inorg. Chem., 2013, 52:12064-12069 doi: 10.1021/ic401886f

  3. [3]

     Zhang X, Sun M L, Huang Y Y, et al. Inorg. Chem. Commun., 201, 37:155-157

  4. [4]

     Feng X, Liu J, Chen J L, et al. Inorg. Chem. Commun., 2014, 50:42-47 http://pub.chinasciencejournal.com/article/getArticleRedirect.action?doiCode=10.3724/SP.J.1077.2012.12082

  5. [5]

     Feng X, Chen J L, Li R F, et al. Inorg. Chem. Commun., 2016, 66:41-46 doi: 10.1021/ja5017156

  6. [6]

     Huang Y M, Zhang B G, Duan J G, et al. Cryst. Growth Des., 2014, 14:2866-2872 doi: 10.1021/cg500175k

  7. [7]

     Ward M D, Raithby P R. Chem. Soc. Rev., 2013, 42:1619-1636 http://pubs.rsc.org/en/Content/ArticleLanding/2015/CC/C5CC02226F#!divAbstract

  8. [8]

     Du M, Li C P, Liu C S, et al. Coord. Chem. Rev., 2013, 257:1282-1305

  9. [9]

     唐辉, 郭艳红, 盛俊峰, 等.无机化学学报, 2017, 33(1):134-142 doi: 10.11862/CJIC.2017.012TANG Hui, GUO Yan-Hong, SHENG Jun-Feng, et al. Chinese J. Inorg. Chem., 2017, 33(1):134-142 doi: 10.11862/CJIC.2017.012

  10. [10]

      Wang Y F, Li S H, Ma L F, et al. Inorg. Chem. Commun., 2015, 62:42-46

  11. [11]

      Guo X G, Yang W, Wu X, et al. Dalton Trans., 2013, 42:15106-15112 doi: 10.1039/c3dt51574e

  12. [12]

      Colombo V, Galli S, Choi H J, et al. Chem. Sci., 2011, 2:1311-1319 doi: 10.1039/c1sc00136a

  13. [13]

      Ganguly S, Mondal R. Cryst. Growth Des., 2015, 15:2211-2222 doi: 10.1021/cg5018592

  14. [14]

      Ma L, Yu N Q, Chen S S, et al. CrystEngComm, 2013, 15:1352-1364 doi: 10.1039/c2ce26323h

  15. [15]

      Chen K J, Lin R B, Liao P Q, et al. Cryst. Growth Des., 2013, 13:2118-2123 doi: 10.1021/cg400183s

  16. [16]

      Sheldrick G M. Acta Crystallogr. Sect. A:Found. Crystallogr., 2008, A64:112-122 http://europepmc.org/articles/PMC2970122

  17. [17]

      Wang Y F, Li Z, Sun Y C, et al. Inorg. Chem. Commun., 2014, 44:25-28 doi: 10.1016/j.inoche.2014.02.043

  18. [18]

      Fisher M E. Am. J. Phys., 1964, 32:343-346 doi: 10.1119/1.1970340

  19. [19]

      Ma L F, Wang Y Y, Wang L Y, et al. Eur. J. Inorg. Chem., 2008:693-703 http://iopscience.iop.org/0953-8984/27/5/053201

• 

  Scheme 1  Coordination modes of H₂L and btec^4-

  下载: 全尺寸图片 幻灯片
  

  Figure 1  (a) Coordination geometry of the Co(Ⅱ) ion in 1; (b) 2D layer [Co₄(btec)]⁴⁺ in 1; (c) 1D chain [Co(H₂L)]²⁺ in 1; (d) 2D network of 1

  Symmetry codes:#1:1-x, -1/2+y, 3/2-z; #2:1-x, 1/2+y, 3/2-z; #3:1-x, -y, 1-z

  下载: 全尺寸图片 幻灯片
  

  Figure 2  PXRD patterns of 1 and 2

  下载: 全尺寸图片 幻灯片
  

  Figure 3  Plots of χ_MT(□) and χ_M(○) versus T for 1

  下载: 全尺寸图片 幻灯片
  

  Figure 4  Plots of χ_MT(□) and χ_M(○) versus T for 2

  下载: 全尺寸图片 幻灯片

  Table 1.  Crystal data and structure refinement for compounds 1 and 2

  Compound	1	2
  Empirical formula	C15H9CoN6O4	C15H9CuN6O4
  Formula weight	396.21	400.82
  Crystal system	Orthorhombic	Orthorhombic
  Space group	Pbca	Pbca
  a/nm	1.562 59(7)	1.547 75(6)
  b/ nm	1.162 10(5)	1.139 13(4)
  c/nm	1.724 75(7)	1.779 80(8)
  Volume/nm3	3.132 0(2)	3.137 9(2)
  Z	8	8
  Dc/(g·cm-3)	1.681	1.697
  Absorption coefficient/mm-1	1.133	1.429
  F(000)	1 600.0	1 616.0
  2θ range for data collection/(°)	6.714-50.984	6.764-50.992
  Index range	-18≤h ≤8, -15≤k≤13, -20≤l≤11	-18≤h ≤13, -13≤k≤13, -16≤l≤21
  Reflections collected	9 140	9 590
  Independent reflections	2 892 (RInt]0.026 7)	2 857 (RInt=0.028 3)
  Data, restraint, parameter	2 892, 0, 243	2 857, 0, 235
  Goodness-of-fit on/F2	1.038	1.084
  Final R indexes[I≥2σ(I)]	R1=0.033 6, wR2=0.074 8	R1=0.039 9, wR2=0.093 2
  Final R indexes (all data)	R1=0.043 4, wR2=0.078 4	R1=0.046 7, wR2=0.096 1
  Largest diff. peak and hole /(e·nm-3)	590 and -370	470 and -460

  下载: 导出CSV

  Table 2.  Seclected bond lengths (nm) and bond angles (°) for compounds 1 and 2

  1
  Co(1)-O(1)	0.204 06(16) Co(1)-N(1)	0.212 6(2)	O(4)-Co(1)#1	0.203 02(17)
  Co(1)-O(4)#1	0.203 03(17)	N(6)-Co(1)#1	0.212 1(2)
  O(4)#2-Co(1)-N(6)#1	133.91(7)	O(4)#2-Co(1)-O(1)	112.77(7)	O(4)#2-Co(1)-N(1)	91.77(8)
  N(6)#1-Co(1)-N(1)	96.99(8)	N(1)-Co(1)-N(3)#1	171.20(7)	O(4)#2-Co(1)-N(3)#1	87.27(8)
  O(1)-Co(1)-N(6)#1	109.69(7)	N(6)#1-Co(1)-N(3)#1	77.55(7)
  2
  Cu(1)-O(1)	0.200 7(2)	Cu(1)-N(1)	0.211 8(3)	Cu(1)-N(5)#2	0.199 4(3)
  Cu(1)-O(3)#1	0.218 1(2)	Cu(1)-N(2)	0.199 1(3)
  N(5)#2-Cu(1)-O(3)#1	98.07(10)	O(1)-Cu(1)-N(1)	135.76(10)	N(5)#2-Cu(1)-N(1)	94.16(11)
  N(2)-Cu(1)-N(5)#2	171.79(11) N(1)-Cu(1)-O(3)#1	108.09(10)	N(2)-Cu(1)-N(1)	79.89(10)
  N(5)#2-Cu(1)-O(1)	89.78(11)	N(2)-Cu(1)-O(1)	90.58(10)
  Symmetry codes:#1:1-x, -1/2+y, 3/2-z; #2:1-x, 1/2+y, 3/2-z for 1; #1:x, 3/2-y, -1/2+z; #2:1-x, -1/2+y, 1/2-z for 2.

  下载: 导出CSV
•