TY - JOUR
T1 - Crystal structures of a family of silver cyanide complexes of thiourea and substituted thioureas
AU - Stocker, Fred B.
AU - Britton, Doyle
AU - Young, Victor G.
PY - 2000/8/7
Y1 - 2000/8/7
N2 - The syntheses and crystal structures of a family of silver cyanide complexes of thiourea and substituted thioureas are reported. The sulfur ligands include thiourea (tu), 1-methyl-2-thiourea (mtu), 1,3-dimethyl-2-thiourea (dmtu), 1,1,3,3-tetramethyl-2-thiourea (tmtu), and 2-imidazolidinethione (N,N'-ethylenethiourea, etu). Synthesis was effected by dissolving AgCN in an aqueous solution of ligand. Two different complexes were obtained by the reaction of AgCN with tu. Complex 1a: (AgCN)(tu), monoclinic, P21/c, a = 9.3851 (6) Å, b = 8.2782 (5) Å, c = 7.1178 (5) Å, β = 94.591 (1)°, and Z = 4. Complex 1b: (AgCN)(tu)2, triclinic, P1̄, a = 7.9485 (14) Å, b = 9.431 (2) Å, c = 12.771 (2) Å, α = 85.695 (3)°, β = 81.210 (4)°, γ = 77.987 (2)°, and Z = 4. Complex 2: (AgCN)(mtu), triclinic, P1̄, a = 4.113 (2) Å, b = 9.472 (4) Å, c = 9.679 (4) Å, α = 113.918 (5)°, β = 98.188 (6)°, γ = 97.725 (6)°, and Z = 2. Complex 3 (AgCN)2(dmtu)2, monoclinic, P21/m, a = 7.1482 (7) Å, b = 14.776 (2) Å, c = 7.3366 (7) Å, β = 92.418 (2)°, and Z = 2. Complex 4: (AgCN)(tmtu), orthorhombic, P212121, a = 8.823(6) Å, b = 10.209 (2) Å, c = 10.362 (2) Å, and Z = 4. Complex 5: (AgCN)2(etu)2, triclinic, P1̄, a = 6.8001 (2) Å, b = 8.6154 (1) Å, c = 13.4747 (3) Å, α = 71.720 (1)°, β = 79.906 (1)°, γ = 75.885 (2)°, and Z = 2. All of the structures involve either one- or two-dimensional polymeric arrays held together by bridging S and CN groups. There is, however, no similarity between any two of the arrays. Four of the five ligands used also form similar complexes with CuCN. For one ligand, tmtu, the structures are isomorphous. For the other three, not only are the structures not isomorphous, the m/n ratio in (MCN)(m)L(n) when M is Ag is different from that when M is Cu.
AB - The syntheses and crystal structures of a family of silver cyanide complexes of thiourea and substituted thioureas are reported. The sulfur ligands include thiourea (tu), 1-methyl-2-thiourea (mtu), 1,3-dimethyl-2-thiourea (dmtu), 1,1,3,3-tetramethyl-2-thiourea (tmtu), and 2-imidazolidinethione (N,N'-ethylenethiourea, etu). Synthesis was effected by dissolving AgCN in an aqueous solution of ligand. Two different complexes were obtained by the reaction of AgCN with tu. Complex 1a: (AgCN)(tu), monoclinic, P21/c, a = 9.3851 (6) Å, b = 8.2782 (5) Å, c = 7.1178 (5) Å, β = 94.591 (1)°, and Z = 4. Complex 1b: (AgCN)(tu)2, triclinic, P1̄, a = 7.9485 (14) Å, b = 9.431 (2) Å, c = 12.771 (2) Å, α = 85.695 (3)°, β = 81.210 (4)°, γ = 77.987 (2)°, and Z = 4. Complex 2: (AgCN)(mtu), triclinic, P1̄, a = 4.113 (2) Å, b = 9.472 (4) Å, c = 9.679 (4) Å, α = 113.918 (5)°, β = 98.188 (6)°, γ = 97.725 (6)°, and Z = 2. Complex 3 (AgCN)2(dmtu)2, monoclinic, P21/m, a = 7.1482 (7) Å, b = 14.776 (2) Å, c = 7.3366 (7) Å, β = 92.418 (2)°, and Z = 2. Complex 4: (AgCN)(tmtu), orthorhombic, P212121, a = 8.823(6) Å, b = 10.209 (2) Å, c = 10.362 (2) Å, and Z = 4. Complex 5: (AgCN)2(etu)2, triclinic, P1̄, a = 6.8001 (2) Å, b = 8.6154 (1) Å, c = 13.4747 (3) Å, α = 71.720 (1)°, β = 79.906 (1)°, γ = 75.885 (2)°, and Z = 2. All of the structures involve either one- or two-dimensional polymeric arrays held together by bridging S and CN groups. There is, however, no similarity between any two of the arrays. Four of the five ligands used also form similar complexes with CuCN. For one ligand, tmtu, the structures are isomorphous. For the other three, not only are the structures not isomorphous, the m/n ratio in (MCN)(m)L(n) when M is Ag is different from that when M is Cu.
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U2 - 10.1021/ic990859l
DO - 10.1021/ic990859l
M3 - Article
C2 - 11196805
AN - SCOPUS:0034617607
SN - 0020-1669
VL - 39
SP - 3479
EP - 3484
JO - Inorganic Chemistry
JF - Inorganic Chemistry
IS - 16
ER -