Abstract
Hydrothermal reactions of lead(II) acetate with 5-sulfoisophthalic acid monosodium salt (NaH 2BTS) and N-(phosphonomethyl)- N-methylglycine, MeN(CH 2CO 2H)(CH 2PO 3H 2) (H 3L 1), or a new aminodiphosphonic acid, 3-Pyridyl-CH 2N(CH 2PO 3H 2) 2 (H 4L 2), afforded two novel lead(II) phosphonate–sulfonate hybrids, namely, Pb 3[L 1][BTS][H 2O]·H 2O 1 and Pb 2[HL 3][BTS]·H 2O 2 (H 2L 3=3-Pyridyl-CH 2(Me)N(CH 2PO 3H 2)). H 2L 3 was formed as a result of the decomposition of one phosphonate group in H 4L 2 during the reaction. Compound 1 crystallizes in the triclinic space group P 1 ̄ with a=9.9148(4) Å, b=10.4382(4) Å, c=10.6926(2) Å, α=96.495(2)°, β=110.599(2)°, γ=98.433(2)°, V=1008.31(6) Å 3, and Z=2. The structure of compound 1 features a 3D network built from the interconnection of hexanuclear Pb 6(L 1) 2 units and 1D double chains of lead(II) carboxylate–sulfonate. Compound 2 crystallizes in the monoclinic space group P2 1/ c with a=9.5403(7) Å, b=11.6170(8) Å, c=19.7351(15) Å, β=97.918(2)°, V=2166.4(3) Å 3, and Z=4. Compound 2 has a 3D network structure built by the cross-linkage of 1D double chains of lead(II) phosphonates and 2D layers of lead(II) carboxylate–sulfonate.
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