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Cristian Biagioni - One of the best experts on this subject based on the ideXlab platform.
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Comparative modular analysis of two complex Sulfosalt structures: sterryite, Cu(Ag,Cu)3Pb19(Sb,As)22(As-As)S56, and parasterryite, Ag4Pb20(Sb,As)24S58.
Acta Crystallographica Section B Structural Science, 2012Co-Authors: Yves Moelo, Catherine Guillot-deudon, Michel Evain, Paolo Orlandi, Cristian BiagioniAbstract:The crystal structures of two very close, but distinct complex minerals of the lead Sulfosalt Group have been solved: sterryite, Cu(Ag,Cu)(3)Pb(19)(Sb,As)(22)(As-As)S(56), and parasterryite, Ag(4)Pb(20)(Sb,As)(24)S(58). They are analyzed and compared according to modular analysis. The fundamental building block is a complex column centred on a Pb(6)S(12) triangular prismatic core, with two additional long and short arms. The main chemical and topological differences relate to the short arm, which induces a relative a/4 shift (~2 A along the elongation parameter) of the constitutive rod layers, as illustrated by distinct cell settings within the same space Group (P2(1)/n and P2(1)/c, respectively). Selection of the shortest (i.e. strongest) (Sb,As)-S bonds permitted to enhance the polymeric organization of (Sb,As) atoms with triangular pyramidal coordination. These two quasi-homeotypic structures are expanded derivatives of owyheeite, Ag(3)Pb(10)Sb(11)S(28). The hierarchy of organization levels from zero- to three-dimensional entities is subordinated to building operators, which appear as the driving force for the construction of such complex structures. Minor cations (Ag, Cu) or the As-As pair in sterryite secure the final locking, which favours the formation of one or the other compound.
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Comparative modular analysis of two complex Sulfosalt structures: sterryite, Cu(Ag,Cu)(3)Pb-19(Sb,As)(22)(As-As)S-56, and parasterryite, Ag4Pb20(Sb,As)(24)S-58
Acta Crystallographica Section B: Structural Science, 2012Co-Authors: Yves Moelo, Catherine Guillot-deudon, Michel Evain, Paolo Orlandi, Cristian BiagioniAbstract:The crystal structures of two very close, but distinct complex minerals of the lead Sulfosalt Group have been solved: sterryite, Cu(Ag,Cu)(3)Pb-19(Sb,As)(22)(As-As)S-56, and parasterryite, Ag4Pb20(Sb,As)(24)S-58. They are analyzed and compared according to modular analysis. The fundamental building block is a complex column centred on a Pb6S12 triangular prismatic core, with two additional long and short arms. The main chemical and topological differences relate to the short arm, which induces a relative a/4 shift (similar to 2 angstrom along the elongation parameter) of the constitutive rod layers, as illustrated by distinct cell settings within the same space Group (P2(1)/n and P2(1)/c, respectively). Selection of the shortest (i.e. strongest) (Sb,As)-S bonds permitted to enhance the polymeric organization of (Sb, As) atoms with triangular pyramidal coordination. These two quasi-homeotypic structures are expanded derivatives of owyheeite, Ag3Pb10Sb11S28. The hierarchy of organization levels from zero- to three-dimensional entities is subordinated to building operators, which appear as the driving force for the construction of such complex structures. Minor cations (Ag, Cu) or the As-As pair in sterryite secure the final locking, which favours the formation of one or the other compound.
Yves Moelo - One of the best experts on this subject based on the ideXlab platform.
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Comparative modular analysis of two complex Sulfosalt structures: sterryite, Cu(Ag,Cu)3Pb19(Sb,As)22(As-As)S56, and parasterryite, Ag4Pb20(Sb,As)24S58.
Acta Crystallographica Section B Structural Science, 2012Co-Authors: Yves Moelo, Catherine Guillot-deudon, Michel Evain, Paolo Orlandi, Cristian BiagioniAbstract:The crystal structures of two very close, but distinct complex minerals of the lead Sulfosalt Group have been solved: sterryite, Cu(Ag,Cu)(3)Pb(19)(Sb,As)(22)(As-As)S(56), and parasterryite, Ag(4)Pb(20)(Sb,As)(24)S(58). They are analyzed and compared according to modular analysis. The fundamental building block is a complex column centred on a Pb(6)S(12) triangular prismatic core, with two additional long and short arms. The main chemical and topological differences relate to the short arm, which induces a relative a/4 shift (~2 A along the elongation parameter) of the constitutive rod layers, as illustrated by distinct cell settings within the same space Group (P2(1)/n and P2(1)/c, respectively). Selection of the shortest (i.e. strongest) (Sb,As)-S bonds permitted to enhance the polymeric organization of (Sb,As) atoms with triangular pyramidal coordination. These two quasi-homeotypic structures are expanded derivatives of owyheeite, Ag(3)Pb(10)Sb(11)S(28). The hierarchy of organization levels from zero- to three-dimensional entities is subordinated to building operators, which appear as the driving force for the construction of such complex structures. Minor cations (Ag, Cu) or the As-As pair in sterryite secure the final locking, which favours the formation of one or the other compound.
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Comparative modular analysis of two complex Sulfosalt structures: sterryite, Cu(Ag,Cu)(3)Pb-19(Sb,As)(22)(As-As)S-56, and parasterryite, Ag4Pb20(Sb,As)(24)S-58
Acta Crystallographica Section B: Structural Science, 2012Co-Authors: Yves Moelo, Catherine Guillot-deudon, Michel Evain, Paolo Orlandi, Cristian BiagioniAbstract:The crystal structures of two very close, but distinct complex minerals of the lead Sulfosalt Group have been solved: sterryite, Cu(Ag,Cu)(3)Pb-19(Sb,As)(22)(As-As)S-56, and parasterryite, Ag4Pb20(Sb,As)(24)S-58. They are analyzed and compared according to modular analysis. The fundamental building block is a complex column centred on a Pb6S12 triangular prismatic core, with two additional long and short arms. The main chemical and topological differences relate to the short arm, which induces a relative a/4 shift (similar to 2 angstrom along the elongation parameter) of the constitutive rod layers, as illustrated by distinct cell settings within the same space Group (P2(1)/n and P2(1)/c, respectively). Selection of the shortest (i.e. strongest) (Sb,As)-S bonds permitted to enhance the polymeric organization of (Sb, As) atoms with triangular pyramidal coordination. These two quasi-homeotypic structures are expanded derivatives of owyheeite, Ag3Pb10Sb11S28. The hierarchy of organization levels from zero- to three-dimensional entities is subordinated to building operators, which appear as the driving force for the construction of such complex structures. Minor cations (Ag, Cu) or the As-As pair in sterryite secure the final locking, which favours the formation of one or the other compound.
Catherine Guillot-deudon - One of the best experts on this subject based on the ideXlab platform.
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Comparative modular analysis of two complex Sulfosalt structures: sterryite, Cu(Ag,Cu)3Pb19(Sb,As)22(As-As)S56, and parasterryite, Ag4Pb20(Sb,As)24S58.
Acta Crystallographica Section B Structural Science, 2012Co-Authors: Yves Moelo, Catherine Guillot-deudon, Michel Evain, Paolo Orlandi, Cristian BiagioniAbstract:The crystal structures of two very close, but distinct complex minerals of the lead Sulfosalt Group have been solved: sterryite, Cu(Ag,Cu)(3)Pb(19)(Sb,As)(22)(As-As)S(56), and parasterryite, Ag(4)Pb(20)(Sb,As)(24)S(58). They are analyzed and compared according to modular analysis. The fundamental building block is a complex column centred on a Pb(6)S(12) triangular prismatic core, with two additional long and short arms. The main chemical and topological differences relate to the short arm, which induces a relative a/4 shift (~2 A along the elongation parameter) of the constitutive rod layers, as illustrated by distinct cell settings within the same space Group (P2(1)/n and P2(1)/c, respectively). Selection of the shortest (i.e. strongest) (Sb,As)-S bonds permitted to enhance the polymeric organization of (Sb,As) atoms with triangular pyramidal coordination. These two quasi-homeotypic structures are expanded derivatives of owyheeite, Ag(3)Pb(10)Sb(11)S(28). The hierarchy of organization levels from zero- to three-dimensional entities is subordinated to building operators, which appear as the driving force for the construction of such complex structures. Minor cations (Ag, Cu) or the As-As pair in sterryite secure the final locking, which favours the formation of one or the other compound.
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Comparative modular analysis of two complex Sulfosalt structures: sterryite, Cu(Ag,Cu)(3)Pb-19(Sb,As)(22)(As-As)S-56, and parasterryite, Ag4Pb20(Sb,As)(24)S-58
Acta Crystallographica Section B: Structural Science, 2012Co-Authors: Yves Moelo, Catherine Guillot-deudon, Michel Evain, Paolo Orlandi, Cristian BiagioniAbstract:The crystal structures of two very close, but distinct complex minerals of the lead Sulfosalt Group have been solved: sterryite, Cu(Ag,Cu)(3)Pb-19(Sb,As)(22)(As-As)S-56, and parasterryite, Ag4Pb20(Sb,As)(24)S-58. They are analyzed and compared according to modular analysis. The fundamental building block is a complex column centred on a Pb6S12 triangular prismatic core, with two additional long and short arms. The main chemical and topological differences relate to the short arm, which induces a relative a/4 shift (similar to 2 angstrom along the elongation parameter) of the constitutive rod layers, as illustrated by distinct cell settings within the same space Group (P2(1)/n and P2(1)/c, respectively). Selection of the shortest (i.e. strongest) (Sb,As)-S bonds permitted to enhance the polymeric organization of (Sb, As) atoms with triangular pyramidal coordination. These two quasi-homeotypic structures are expanded derivatives of owyheeite, Ag3Pb10Sb11S28. The hierarchy of organization levels from zero- to three-dimensional entities is subordinated to building operators, which appear as the driving force for the construction of such complex structures. Minor cations (Ag, Cu) or the As-As pair in sterryite secure the final locking, which favours the formation of one or the other compound.
Michel Evain - One of the best experts on this subject based on the ideXlab platform.
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Comparative modular analysis of two complex Sulfosalt structures: sterryite, Cu(Ag,Cu)3Pb19(Sb,As)22(As-As)S56, and parasterryite, Ag4Pb20(Sb,As)24S58.
Acta Crystallographica Section B Structural Science, 2012Co-Authors: Yves Moelo, Catherine Guillot-deudon, Michel Evain, Paolo Orlandi, Cristian BiagioniAbstract:The crystal structures of two very close, but distinct complex minerals of the lead Sulfosalt Group have been solved: sterryite, Cu(Ag,Cu)(3)Pb(19)(Sb,As)(22)(As-As)S(56), and parasterryite, Ag(4)Pb(20)(Sb,As)(24)S(58). They are analyzed and compared according to modular analysis. The fundamental building block is a complex column centred on a Pb(6)S(12) triangular prismatic core, with two additional long and short arms. The main chemical and topological differences relate to the short arm, which induces a relative a/4 shift (~2 A along the elongation parameter) of the constitutive rod layers, as illustrated by distinct cell settings within the same space Group (P2(1)/n and P2(1)/c, respectively). Selection of the shortest (i.e. strongest) (Sb,As)-S bonds permitted to enhance the polymeric organization of (Sb,As) atoms with triangular pyramidal coordination. These two quasi-homeotypic structures are expanded derivatives of owyheeite, Ag(3)Pb(10)Sb(11)S(28). The hierarchy of organization levels from zero- to three-dimensional entities is subordinated to building operators, which appear as the driving force for the construction of such complex structures. Minor cations (Ag, Cu) or the As-As pair in sterryite secure the final locking, which favours the formation of one or the other compound.
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Comparative modular analysis of two complex Sulfosalt structures: sterryite, Cu(Ag,Cu)(3)Pb-19(Sb,As)(22)(As-As)S-56, and parasterryite, Ag4Pb20(Sb,As)(24)S-58
Acta Crystallographica Section B: Structural Science, 2012Co-Authors: Yves Moelo, Catherine Guillot-deudon, Michel Evain, Paolo Orlandi, Cristian BiagioniAbstract:The crystal structures of two very close, but distinct complex minerals of the lead Sulfosalt Group have been solved: sterryite, Cu(Ag,Cu)(3)Pb-19(Sb,As)(22)(As-As)S-56, and parasterryite, Ag4Pb20(Sb,As)(24)S-58. They are analyzed and compared according to modular analysis. The fundamental building block is a complex column centred on a Pb6S12 triangular prismatic core, with two additional long and short arms. The main chemical and topological differences relate to the short arm, which induces a relative a/4 shift (similar to 2 angstrom along the elongation parameter) of the constitutive rod layers, as illustrated by distinct cell settings within the same space Group (P2(1)/n and P2(1)/c, respectively). Selection of the shortest (i.e. strongest) (Sb,As)-S bonds permitted to enhance the polymeric organization of (Sb, As) atoms with triangular pyramidal coordination. These two quasi-homeotypic structures are expanded derivatives of owyheeite, Ag3Pb10Sb11S28. The hierarchy of organization levels from zero- to three-dimensional entities is subordinated to building operators, which appear as the driving force for the construction of such complex structures. Minor cations (Ag, Cu) or the As-As pair in sterryite secure the final locking, which favours the formation of one or the other compound.
Paolo Orlandi - One of the best experts on this subject based on the ideXlab platform.
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Comparative modular analysis of two complex Sulfosalt structures: sterryite, Cu(Ag,Cu)3Pb19(Sb,As)22(As-As)S56, and parasterryite, Ag4Pb20(Sb,As)24S58.
Acta Crystallographica Section B Structural Science, 2012Co-Authors: Yves Moelo, Catherine Guillot-deudon, Michel Evain, Paolo Orlandi, Cristian BiagioniAbstract:The crystal structures of two very close, but distinct complex minerals of the lead Sulfosalt Group have been solved: sterryite, Cu(Ag,Cu)(3)Pb(19)(Sb,As)(22)(As-As)S(56), and parasterryite, Ag(4)Pb(20)(Sb,As)(24)S(58). They are analyzed and compared according to modular analysis. The fundamental building block is a complex column centred on a Pb(6)S(12) triangular prismatic core, with two additional long and short arms. The main chemical and topological differences relate to the short arm, which induces a relative a/4 shift (~2 A along the elongation parameter) of the constitutive rod layers, as illustrated by distinct cell settings within the same space Group (P2(1)/n and P2(1)/c, respectively). Selection of the shortest (i.e. strongest) (Sb,As)-S bonds permitted to enhance the polymeric organization of (Sb,As) atoms with triangular pyramidal coordination. These two quasi-homeotypic structures are expanded derivatives of owyheeite, Ag(3)Pb(10)Sb(11)S(28). The hierarchy of organization levels from zero- to three-dimensional entities is subordinated to building operators, which appear as the driving force for the construction of such complex structures. Minor cations (Ag, Cu) or the As-As pair in sterryite secure the final locking, which favours the formation of one or the other compound.
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Comparative modular analysis of two complex Sulfosalt structures: sterryite, Cu(Ag,Cu)(3)Pb-19(Sb,As)(22)(As-As)S-56, and parasterryite, Ag4Pb20(Sb,As)(24)S-58
Acta Crystallographica Section B: Structural Science, 2012Co-Authors: Yves Moelo, Catherine Guillot-deudon, Michel Evain, Paolo Orlandi, Cristian BiagioniAbstract:The crystal structures of two very close, but distinct complex minerals of the lead Sulfosalt Group have been solved: sterryite, Cu(Ag,Cu)(3)Pb-19(Sb,As)(22)(As-As)S-56, and parasterryite, Ag4Pb20(Sb,As)(24)S-58. They are analyzed and compared according to modular analysis. The fundamental building block is a complex column centred on a Pb6S12 triangular prismatic core, with two additional long and short arms. The main chemical and topological differences relate to the short arm, which induces a relative a/4 shift (similar to 2 angstrom along the elongation parameter) of the constitutive rod layers, as illustrated by distinct cell settings within the same space Group (P2(1)/n and P2(1)/c, respectively). Selection of the shortest (i.e. strongest) (Sb,As)-S bonds permitted to enhance the polymeric organization of (Sb, As) atoms with triangular pyramidal coordination. These two quasi-homeotypic structures are expanded derivatives of owyheeite, Ag3Pb10Sb11S28. The hierarchy of organization levels from zero- to three-dimensional entities is subordinated to building operators, which appear as the driving force for the construction of such complex structures. Minor cations (Ag, Cu) or the As-As pair in sterryite secure the final locking, which favours the formation of one or the other compound.
