On the minerals, mainly zeolites, occurring in the basalt of Table Mountain, near Golden

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Abstract
Hydro/solvothermal synthesis and structures of new zinc phosphates of varying dimensionality. Natarajan S(1).O., Bangalore 560 064, India. raj@jncasr.ac.in Hydro/solvothermal reactions of ZnO, HCl, H(3)PO, 1,4-diazacycleheptane (homopiperazine), and H(2)O under a variety of conditions yielded three new organic-inorganic hybrid materials, [C(5)N(2)H(14)][Zn(HPO(4))(2)].xH(2)O (x = approximately 0.46), I, [C(5)N(2)H(14)][Zn(3)(H(2)O)(PO(4))(2)(HPO(4))], II, and [C(5)N(2)H(14)][Zn(2)(HPO(4))(3)].H(2)O, III. While I has a one-dimensional structure, II possesses a two-dimensional layered structure, and III has a three-dimensional structure closely related to the ABW zeolitic architecture. All the compounds consist of vertex linking of ZnO, PO, and HPO tetrahedral units. The fundamental building unit, single four-membered ring (S4R), is present in all the cases, and the observed differences in their structures result from variations in the connectivity between the S4R units. Thus I has a corner-shared S4R forming an infinite one-dimensional chain, II has two corner-shared chains fused through a 3-coordinated oxygen atom forming a strip and a layer with eight-membered apertures, and III has S4R units connected via oxygen atoms to give rise to channels bound by eight T atoms (T = Zn, P) in all crystallographic directions. Crystal data: I, monoclinic, space group = P2(1)/n (No. 14), a = 8.6053 A, b = 13.7129 A, c = 10.8184 A, beta = 97.946 degrees, V = 1264.35 A, Z = 4; II, monoclinic, space group = P2(1)/c (No. 14), a = 11.1029 A, b = 17.5531 A, c = 8.2651 A, beta = 97.922 degrees, V = 1595.42 A, Z = 4; III, monoclinic, space group = P2 (No. 4), a = 8.0310 A, b = 10.2475 A, c = 10.570 A, beta = 109.651 degrees, V = 819.24 A, Z = 2.
Reference Key
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Authors C. W. Cross, W. F. Hillebrand
Journal american journal of science
Year 1882
DOI
10.2475/ajs.s3-23.138.452
URL
https://doi.org/10.2475/ajs.s3-23.138.452
Keywords Keywords not found

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