Synthesis and Characterization of Four Metal-Organophosphonates with One-, Two-, and Three-Dimensional Structures
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- 作者：Sanjit Konar ; Jerzy Zo<img src="http ; //pubs.acs.org/images/entities/nacute.gif" border="0"> ; Andrey V. Prosvirin ; Kim R. Dunbar ; Abraham Clearfield
- 刊名：Inorganic Chemistry
- 出版年：2007
- 出版时间：June 25, 2007
- 年：2007
- 卷：46
- 期：13
- 页码：5229 - 5236
- 全文大小：595K
- 年卷期：v.46,no.13(June 25, 2007)
- ISSN：1520-510X
文摘
A series of metal-organic hybrid compounds were synthesized using two new phosphonic acids, pyridyl-4-phosphonicacid and p-xylylenediphosphonic acid (H2O3PCH2C6H4CH2PO3H2). The phosphonic acid ligands have been synthesizedfrom their corresponding bromides following two different types of reactions. The reaction of pyridyl-4-phosphonicacid with three different divalent metal salts results in the formation of molecular structures of different dimensionality.The reaction of Cu(II) with the phosphonic acid under hydrothermal conditions yields a three-dimensional (3D)open framework structure having the molecular formula [Cu4(NC5H4-PO3)4(H2O)10] (1). The reactions with Mn(II)and Zn(II) salts with the same phosphonic acid resulted in a two-dimensional layered and a dinuclear compoundwith molecular formulas [Mn3(NC5H4-PO3)4(H2O)6(ClO4)2] (2) and [Zn2(NHC5H4-PO3H)2Cl4] (3), respectively.Compound 1 crystallizes in the triclinic crystal system having space group P<IMG SRC="/images/entities/onemacr.gif"> with structural parameters a =7.4564(15) Å, b = 9.1845(19) Å, c = 11.582(2) Å, 
= 100.842(3)
, 
beta2.gif" BORDER=0 ALIGN="middle"> = 104.303(3), 
= 94.774(3), and Z= 1. Compound 2 crystallizes in the triclinic crystal system, space group P
, with structural parameters a =7.6871(14) Å, b = 10.576(2) Å, c = 14.470(3) Å, = 81.340(3), beta2.gif" BORDER=0 ALIGN="middle"> = 81.561(3), = 68.757(3), and Z = 2,whereas compound 3 crystallizes in a monoclinic crystal system with space group P2(1)/n. The structural parametersare as follows: a = 8.4969 (5) Å, b = 9.3911 (5) Å, c = 12.3779 (6) Å, beta2.gif" BORDER=0 ALIGN="middle"> = 90.860(17), and Z = 4. Thepyridylphosphonate ligand shows different ligation behavior toward the three divalent metal ions. On the otherhand, p-xylylenediphosphonic acid on reaction with Co(II) formed a 3D compound [Co2(O3PCH2C6H4CH2PO3)2(H2O)2] (4) with a layered and pillared structure. Compound 4 crystallizes in an orthorhombic crystal system withspace group Pnma. The structural parameters are a = 21.744(4) Å, b = 5.6744(10) Å, c = 4.7927(9) Å, and Z= 4.
= 100.842(3), beta2.gif" BORDER=0 ALIGN="middle"> = 104.303(3), = 94.774(3), and Z= 1. Compound 2 crystallizes in the triclinic crystal system, space group P, with structural parameters a =7.6871(14) Å, b = 10.576(2) Å, c = 14.470(3) Å, = 81.340(3), beta2.gif" BORDER=0 ALIGN="middle"> = 81.561(3), = 68.757(3), and Z = 2,whereas compound 3 crystallizes in a monoclinic crystal system with space group P2(1)/n. The structural parametersare as follows: a = 8.4969 (5) Å, b = 9.3911 (5) Å, c = 12.3779 (6) Å, beta2.gif" BORDER=0 ALIGN="middle"> = 90.860(17), and Z = 4. Thepyridylphosphonate ligand shows different ligation behavior toward the three divalent metal ions. On the otherhand, p-xylylenediphosphonic acid on reaction with Co(II) formed a 3D compound [Co2(O3PCH2C6H4CH2PO3)2(H2O)2] (4) with a layered and pillared structure. Compound 4 crystallizes in an orthorhombic crystal system withspace group Pnma. The structural parameters are a = 21.744(4) Å, b = 5.6744(10) Å, c = 4.7927(9) Å, and Z= 4.