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- W1984153907 abstract "The X-ray structure analysis of bis(chloromercuri)methane CH 2 (HgCl) 2 has been performed. CH 2 (HgCl) 2 crystallizes in Prnma with a = 713.7(4) pm, b - 643.6(4) pm, c = 1221.7(8) pm, Z = 4; the isotypic CH 2 (HgBr) 2 has a = 731.1(3) pm, b = 668.6(1) pm, c - 1260.1(4) pm. The CH 2 (HgCl) 2 molecules (site symmetry m) contain asymmetric CHg 2 entities with bond lengths R(C-Hg(l)) = 203.9(17) pm and R(C-Hg(2)) = 212.2(18) pm, respectively, whereas the two independent Hg-Cl bonds are almost the same (average (Hg-Cl) = 233.3(5) pm). The bond angles Hg-C-Hg (111.6(3)°) and C-Hg-Cl (average 177.8(5)°) fall into the expected range. The molecules are held together by two independent systems of short van der Waals contacts Cl →···Hg forming zig-zag chains along the 6-axis, and a wide variety of van der Waals interactions Cl →···Hg in planes parallel to (010). The arrangements in these planes produce maximum density molecular layers with coordination number six; including the molecules of two adjacent layers each molecule reaches a total coordination number of fourteen. Depending on the van der Waals radius assumed for mercury a packing coefficient 0.663 ≤ k ≤ 0.733 comparable to that of close-packing of spheres results." @default.
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- W1984153907 date "1981-02-01" @default.
- W1984153907 modified "2023-09-24" @default.
- W1984153907 title "Metallomethane, IV [1] Molekül-und Kristallstruktur von Bis(chloroquecksilber)metlian CH<sub>2</sub>(HgCl)<sub>2</sub> / Metallomethanes, IV [1] Molecular and Crystal Structure of Bis(chloromercuri)methane CH<sub>2</sub>(HgCl)<sub>2</sub>" @default.
- W1984153907 doi "https://doi.org/10.1515/znb-1981-0212" @default.
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