The Experts below are selected from a list of 288 Experts worldwide ranked by ideXlab platform
Hubert Schmidbaur - One of the best experts on this subject based on the ideXlab platform.
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change of coordination from tetrahedral gold ammonium to square pyramidal gold arsonium cations
Nature, 1991Co-Authors: Edgar Zeller, Holger Beruda, Andreas Kolb, Peter Bissinger, Jurgen Riede, Hubert SchmidbaurAbstract:RECENT work1–5 has shown that gold-based ligands in Compounds of carbon and nitrogen can induce novel molecular structures with coordination numbers at C and N as high as 5 and 6. These phenomena must be ascribed to metal–metal interactions (Au…Au), which can overrule bonding in classical configurations. Here we describe a study of the molecular structures of tetra(auro)ammonium ((LAu)4N+) and tetra(auro)arsonium ((LAu)4As+) cations (where L is a ligand). We find that the classical tetrahedral structure in these four-coordinate Compounds is abandoned in favour of a square-pyramidal geometry once the radius of the central element is too large to allow for metal–metal bonding in a tetrahedral geometry. Thus, whereas the nitrogen Compounds adopt a tetrahedral structure, for the larger arsenic atom an arsenic-capped square of gold atoms represents a more favourable core geometry. We have not yet been able to prepare the intermediate Phosphorus Compound, but we expect it also to have the square-pyramidal structure.
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Change of coordination from tetrahedral gold–ammonium to square-pyramidal gold–arsonium cations
Nature, 1991Co-Authors: Edgar Zeller, Holger Beruda, Andreas Kolb, Peter Bissinger, Jurgen Riede, Hubert SchmidbaurAbstract:RECENT work1–5 has shown that gold-based ligands in Compounds of carbon and nitrogen can induce novel molecular structures with coordination numbers at C and N as high as 5 and 6. These phenomena must be ascribed to metal–metal interactions (Au…Au), which can overrule bonding in classical configurations. Here we describe a study of the molecular structures of tetra(auro)ammonium ((LAu)4N+) and tetra(auro)arsonium ((LAu)4As+) cations (where L is a ligand). We find that the classical tetrahedral structure in these four-coordinate Compounds is abandoned in favour of a square-pyramidal geometry once the radius of the central element is too large to allow for metal–metal bonding in a tetrahedral geometry. Thus, whereas the nitrogen Compounds adopt a tetrahedral structure, for the larger arsenic atom an arsenic-capped square of gold atoms represents a more favourable core geometry. We have not yet been able to prepare the intermediate Phosphorus Compound, but we expect it also to have the square-pyramidal structure.
Edgar Zeller - One of the best experts on this subject based on the ideXlab platform.
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change of coordination from tetrahedral gold ammonium to square pyramidal gold arsonium cations
Nature, 1991Co-Authors: Edgar Zeller, Holger Beruda, Andreas Kolb, Peter Bissinger, Jurgen Riede, Hubert SchmidbaurAbstract:RECENT work1–5 has shown that gold-based ligands in Compounds of carbon and nitrogen can induce novel molecular structures with coordination numbers at C and N as high as 5 and 6. These phenomena must be ascribed to metal–metal interactions (Au…Au), which can overrule bonding in classical configurations. Here we describe a study of the molecular structures of tetra(auro)ammonium ((LAu)4N+) and tetra(auro)arsonium ((LAu)4As+) cations (where L is a ligand). We find that the classical tetrahedral structure in these four-coordinate Compounds is abandoned in favour of a square-pyramidal geometry once the radius of the central element is too large to allow for metal–metal bonding in a tetrahedral geometry. Thus, whereas the nitrogen Compounds adopt a tetrahedral structure, for the larger arsenic atom an arsenic-capped square of gold atoms represents a more favourable core geometry. We have not yet been able to prepare the intermediate Phosphorus Compound, but we expect it also to have the square-pyramidal structure.
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Change of coordination from tetrahedral gold–ammonium to square-pyramidal gold–arsonium cations
Nature, 1991Co-Authors: Edgar Zeller, Holger Beruda, Andreas Kolb, Peter Bissinger, Jurgen Riede, Hubert SchmidbaurAbstract:RECENT work1–5 has shown that gold-based ligands in Compounds of carbon and nitrogen can induce novel molecular structures with coordination numbers at C and N as high as 5 and 6. These phenomena must be ascribed to metal–metal interactions (Au…Au), which can overrule bonding in classical configurations. Here we describe a study of the molecular structures of tetra(auro)ammonium ((LAu)4N+) and tetra(auro)arsonium ((LAu)4As+) cations (where L is a ligand). We find that the classical tetrahedral structure in these four-coordinate Compounds is abandoned in favour of a square-pyramidal geometry once the radius of the central element is too large to allow for metal–metal bonding in a tetrahedral geometry. Thus, whereas the nitrogen Compounds adopt a tetrahedral structure, for the larger arsenic atom an arsenic-capped square of gold atoms represents a more favourable core geometry. We have not yet been able to prepare the intermediate Phosphorus Compound, but we expect it also to have the square-pyramidal structure.
Jurgen Riede - One of the best experts on this subject based on the ideXlab platform.
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change of coordination from tetrahedral gold ammonium to square pyramidal gold arsonium cations
Nature, 1991Co-Authors: Edgar Zeller, Holger Beruda, Andreas Kolb, Peter Bissinger, Jurgen Riede, Hubert SchmidbaurAbstract:RECENT work1–5 has shown that gold-based ligands in Compounds of carbon and nitrogen can induce novel molecular structures with coordination numbers at C and N as high as 5 and 6. These phenomena must be ascribed to metal–metal interactions (Au…Au), which can overrule bonding in classical configurations. Here we describe a study of the molecular structures of tetra(auro)ammonium ((LAu)4N+) and tetra(auro)arsonium ((LAu)4As+) cations (where L is a ligand). We find that the classical tetrahedral structure in these four-coordinate Compounds is abandoned in favour of a square-pyramidal geometry once the radius of the central element is too large to allow for metal–metal bonding in a tetrahedral geometry. Thus, whereas the nitrogen Compounds adopt a tetrahedral structure, for the larger arsenic atom an arsenic-capped square of gold atoms represents a more favourable core geometry. We have not yet been able to prepare the intermediate Phosphorus Compound, but we expect it also to have the square-pyramidal structure.
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Change of coordination from tetrahedral gold–ammonium to square-pyramidal gold–arsonium cations
Nature, 1991Co-Authors: Edgar Zeller, Holger Beruda, Andreas Kolb, Peter Bissinger, Jurgen Riede, Hubert SchmidbaurAbstract:RECENT work1–5 has shown that gold-based ligands in Compounds of carbon and nitrogen can induce novel molecular structures with coordination numbers at C and N as high as 5 and 6. These phenomena must be ascribed to metal–metal interactions (Au…Au), which can overrule bonding in classical configurations. Here we describe a study of the molecular structures of tetra(auro)ammonium ((LAu)4N+) and tetra(auro)arsonium ((LAu)4As+) cations (where L is a ligand). We find that the classical tetrahedral structure in these four-coordinate Compounds is abandoned in favour of a square-pyramidal geometry once the radius of the central element is too large to allow for metal–metal bonding in a tetrahedral geometry. Thus, whereas the nitrogen Compounds adopt a tetrahedral structure, for the larger arsenic atom an arsenic-capped square of gold atoms represents a more favourable core geometry. We have not yet been able to prepare the intermediate Phosphorus Compound, but we expect it also to have the square-pyramidal structure.
Peter Bissinger - One of the best experts on this subject based on the ideXlab platform.
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change of coordination from tetrahedral gold ammonium to square pyramidal gold arsonium cations
Nature, 1991Co-Authors: Edgar Zeller, Holger Beruda, Andreas Kolb, Peter Bissinger, Jurgen Riede, Hubert SchmidbaurAbstract:RECENT work1–5 has shown that gold-based ligands in Compounds of carbon and nitrogen can induce novel molecular structures with coordination numbers at C and N as high as 5 and 6. These phenomena must be ascribed to metal–metal interactions (Au…Au), which can overrule bonding in classical configurations. Here we describe a study of the molecular structures of tetra(auro)ammonium ((LAu)4N+) and tetra(auro)arsonium ((LAu)4As+) cations (where L is a ligand). We find that the classical tetrahedral structure in these four-coordinate Compounds is abandoned in favour of a square-pyramidal geometry once the radius of the central element is too large to allow for metal–metal bonding in a tetrahedral geometry. Thus, whereas the nitrogen Compounds adopt a tetrahedral structure, for the larger arsenic atom an arsenic-capped square of gold atoms represents a more favourable core geometry. We have not yet been able to prepare the intermediate Phosphorus Compound, but we expect it also to have the square-pyramidal structure.
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Change of coordination from tetrahedral gold–ammonium to square-pyramidal gold–arsonium cations
Nature, 1991Co-Authors: Edgar Zeller, Holger Beruda, Andreas Kolb, Peter Bissinger, Jurgen Riede, Hubert SchmidbaurAbstract:RECENT work1–5 has shown that gold-based ligands in Compounds of carbon and nitrogen can induce novel molecular structures with coordination numbers at C and N as high as 5 and 6. These phenomena must be ascribed to metal–metal interactions (Au…Au), which can overrule bonding in classical configurations. Here we describe a study of the molecular structures of tetra(auro)ammonium ((LAu)4N+) and tetra(auro)arsonium ((LAu)4As+) cations (where L is a ligand). We find that the classical tetrahedral structure in these four-coordinate Compounds is abandoned in favour of a square-pyramidal geometry once the radius of the central element is too large to allow for metal–metal bonding in a tetrahedral geometry. Thus, whereas the nitrogen Compounds adopt a tetrahedral structure, for the larger arsenic atom an arsenic-capped square of gold atoms represents a more favourable core geometry. We have not yet been able to prepare the intermediate Phosphorus Compound, but we expect it also to have the square-pyramidal structure.
Andreas Kolb - One of the best experts on this subject based on the ideXlab platform.
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change of coordination from tetrahedral gold ammonium to square pyramidal gold arsonium cations
Nature, 1991Co-Authors: Edgar Zeller, Holger Beruda, Andreas Kolb, Peter Bissinger, Jurgen Riede, Hubert SchmidbaurAbstract:RECENT work1–5 has shown that gold-based ligands in Compounds of carbon and nitrogen can induce novel molecular structures with coordination numbers at C and N as high as 5 and 6. These phenomena must be ascribed to metal–metal interactions (Au…Au), which can overrule bonding in classical configurations. Here we describe a study of the molecular structures of tetra(auro)ammonium ((LAu)4N+) and tetra(auro)arsonium ((LAu)4As+) cations (where L is a ligand). We find that the classical tetrahedral structure in these four-coordinate Compounds is abandoned in favour of a square-pyramidal geometry once the radius of the central element is too large to allow for metal–metal bonding in a tetrahedral geometry. Thus, whereas the nitrogen Compounds adopt a tetrahedral structure, for the larger arsenic atom an arsenic-capped square of gold atoms represents a more favourable core geometry. We have not yet been able to prepare the intermediate Phosphorus Compound, but we expect it also to have the square-pyramidal structure.
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Change of coordination from tetrahedral gold–ammonium to square-pyramidal gold–arsonium cations
Nature, 1991Co-Authors: Edgar Zeller, Holger Beruda, Andreas Kolb, Peter Bissinger, Jurgen Riede, Hubert SchmidbaurAbstract:RECENT work1–5 has shown that gold-based ligands in Compounds of carbon and nitrogen can induce novel molecular structures with coordination numbers at C and N as high as 5 and 6. These phenomena must be ascribed to metal–metal interactions (Au…Au), which can overrule bonding in classical configurations. Here we describe a study of the molecular structures of tetra(auro)ammonium ((LAu)4N+) and tetra(auro)arsonium ((LAu)4As+) cations (where L is a ligand). We find that the classical tetrahedral structure in these four-coordinate Compounds is abandoned in favour of a square-pyramidal geometry once the radius of the central element is too large to allow for metal–metal bonding in a tetrahedral geometry. Thus, whereas the nitrogen Compounds adopt a tetrahedral structure, for the larger arsenic atom an arsenic-capped square of gold atoms represents a more favourable core geometry. We have not yet been able to prepare the intermediate Phosphorus Compound, but we expect it also to have the square-pyramidal structure.