US5277789A
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US
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Metal, metal alloy, and metal oxide formation by electrodeposition of polymetalllic complexes
Assignee: Northeastern University
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Filing: 1992-06-29
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Granted: 1994-01-11
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Expires: 2012-06-29
Abstract
Abstract A novel method for making metals and homogeneous metal alloys comprises the steps of (a) providing a polymetallic complex of the general formula (μ.sub.4 -0)L.sub.4 M'M"M'"M""X.sub.n wherein L is a ligand selected from the group consisting of organic and inorganic ligands, wherein M', M", M'", and M"" are metal atoms two or more of which may be the same, wherein X is a halogen atom, and wherein n is an integer ranging from 4 to 6; and (b) electrochemically depositing at least one of the metals from said polymetallic complex.
Inventors
- 👤 Samuel P. Kounaves
- 👤 Albert Robbat, Jr.
- 👤 Geoffrey Davies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:33
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/56
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
92 words
A method of producing a metal or metal alloy comprising the steps of: (a) providing a polymetallic complex of the formula: (μ.sub.4 -O)L.sub.4 M'M"M'"M""X.sub.n wherein L is a ligand selected from the group consisting of organic ligands and inorganic ligands, wherein M', M", M'", and M"" are metal atoms, wherein X is a halide, and wherein n is an integer ranging from 4 to 6; and (b) then, applying an appropriate electric potential to said polymetallic complex to cause the electrochemical deposition of at least one of M', M", M'", and M"".
Claim 2
Independent Claim
92 words
A method of producing a metal or metal alloy comprising the steps of: (a) providing a polymetallic complex of the formula: (μ.sub.4 -O)L.sub.4 M'M"M'"M""X.sub.n wherein L is a ligand selected from the group consisting of organic ligands and inorganic ligands, wherein M', M", M'", and M"" are metal atoms, wherein X is a halide, and wherein n is an integer ranging from 4 to 6; and (b) then, applying an appropriate electric potential to said polymetallic complex to cause the electrochemical deposition of at least one of M', M", M'", and M"".
Claim 3
Dependent Claim
21 words
The method as claimed in claim 1 wherein L is a ligand selected from the group consisting of pyridine and N,N-diethylnicotinamide.
Claim 4
Dependent Claim
22 words
The method as claimed in claim 1 wherein X is a halide selected from the group consisting of chloride, bromide, and iodide.
Claim 5
Dependent Claim
22 words
The method as claimed in claim 1 wherein said polymetallic complex is of the formula: (μ.sub.4 -O)L.sub.4 Cu.sub.4-y Ni.sub.y X.sub.n wherein 0≦y≦4.
Claim 6
Dependent Claim
28 words
The method as claimed in claim 4 wherein L is selected from the group consisting of pyridine and N,N-diethylnicotinamide, wherein X is Cl, and wherein n is 6.
Claim 7
Dependent Claim
15 words
The method as claimed in claim 5 wherein L is N,N-diethylnicotinamide and y is 1-3.
Claim 8
Dependent Claim
47 words
The method as claimed in claim 1 wherein said polymetallic complex is of the formula: (μ.sub.4 -O)L.sub.4 Cu.sub.4-w-y-z Co.sub.w Ni.sub.y Zn.sub.z X.sub.n wherein w and y are each integers ranging from 0 to 4, wherein z is an integer ranging from 0 to 2, and wherein 0≦w+y+z≦4.
Claim 9
Dependent Claim
28 words
The method as claimed in claim 7 wherein L is selected from the group consisting of pyridine and N,N-diethylnicotinamide, wherein X is Cl, and wherein n is 6.
Claim 10
Dependent Claim
17 words
The method as claimed in claim 1 wherein said appropriate electric potential is a cycled electric potential.
Claim 11
Dependent Claim
27 words
The method as claimed in claim 9 wherein said cycled electric potential is cycled between +1800 mV and -950 mV at a scan rate of 500 mV/s.
Claim 12
Dependent Claim
17 words
The method as claimed in claim 1 wherein said appropriate electric potential is a constant electric potential.
Claim 13
Dependent Claim
27 words
The method as claimed in claim 1 wherein said appropriate electric potential is +1800 mV for 5 seconds and then +100 mV for an additional 5 seconds.
Claim 14
Dependent Claim
17 words
The method as claimed in claim 1 wherein step (b) is performed at or near room temperature.
Claim 15
Independent Claim
115 words
A method for synthesizing a metal or metal alloy comprising the steps of: a) providing a polymetallic complex of the formula: (μ.sub.4 -O)L.sub.4 M'M"M'"M""X.sub.n wherein L is a ligand selected from the group consisting of organic ligands and inorganic ligands, wherein M', M", M'", and M"" are metal atoms two or more of which may be the same, wherein X is a halide, and wherein n is an integer ranging from 4 to 6; b) dissolving said polymetallic complex in an appropriate solvent containing an appropriate conducting electrolyte; and c) then, applying a sufficient electric potential to electrochemically deposit at least one of the metal atoms from said polymetallic complex onto an appropriate working electrode.
Claim 16
Independent Claim
115 words
A method for synthesizing a metal or metal alloy comprising the steps of: a) providing a polymetallic complex of the formula: (μ.sub.4 -O)L.sub.4 M'M"M'"M""X.sub.n wherein L is a ligand selected from the group consisting of organic ligands and inorganic ligands, wherein M', M", M'", and M"" are metal atoms two or more of which may be the same, wherein X is a halide, and wherein n is an integer ranging from 4 to 6; b) dissolving said polymetallic complex in an appropriate solvent containing an appropriate conducting electrolyte; and c) then, applying a sufficient electric potential to electrochemically deposit at least one of the metal atoms from said polymetallic complex onto an appropriate working electrode.
Claim 17
Dependent Claim
21 words
The method as claimed in claim 14 wherein said solvent is selected from the group consisting of methylene chloride and acetonitrile.
Claim 18
Dependent Claim
25 words
The method as claimed in claim 14 wherein said conducting electrolyte is selected from the group consisting of tetraalkyl ammonium perchlorates and tetraalkyl ammonium tetrafluoroborates.
Claim 19
Dependent Claim
22 words
The method as claimed in claim 14 wherein said working electrode is selected from the group consisting of platinum and glassy carbon.
Claim 20
Independent Claim
99 words
A method for synthesizing a metal or metal alloy comprising the steps of: a) providing a polymetallic complex of the formula: (μ.sub.4 -O)L.sub.4 M'M"M'"M""X.sub.n wherein L is a ligand selected from the group consisting of organic ligands and inorganic ligands, wherein M', M", M'", and M"" are metal atoms two or more of which may be the same, wherein X is a halide, and wherein n is an integer ranging from 4 to 6; and b) then, electrochemically reducing said polymetallic complex so as to deposit at least one of M', M", M'", and M"" onto an appropriate substrate.
Claim 21
Independent Claim
99 words
A method for synthesizing a metal or metal alloy comprising the steps of: a) providing a polymetallic complex of the formula: (μ.sub.4 -O)L.sub.4 M'M"M'"M""X.sub.n wherein L is a ligand selected from the group consisting of organic ligands and inorganic ligands, wherein M', M", M'", and M"" are metal atoms two or more of which may be the same, wherein X is a halide, and wherein n is an integer ranging from 4 to 6; and b) then, electrochemically reducing said polymetallic complex so as to deposit at least one of M', M", M'", and M"" onto an appropriate substrate.
Claim 22
Independent Claim
108 words
A method for synthesizing a metal or metal alloy comprising the steps of: a) providing a polymetallic complex of the formula: (μ.sub.4 -O)L.sub.4 M'M"M'"M""X.sub.n wherein L is a ligand selected from the group consisting of organic ligands and inorganic ligands, wherein M', M", M'", and M"" are metal atoms two or more of which may be the same, wherein X is a halide, and wherein n is an integer ranging from 4 to 6; b) then, oxidizing said polymetallic complex to form an intermediate complex; and c) then, electrochemically reducing said intermediate complex to deposit at least one of M', M", M'", and M"" onto an appropriate substrate.
Claim 23
Independent Claim
108 words
A method for synthesizing a metal or metal alloy comprising the steps of: a) providing a polymetallic complex of the formula: (μ.sub.4 -O)L.sub.4 M'M"M'"M""X.sub.n wherein L is a ligand selected from the group consisting of organic ligands and inorganic ligands, wherein M', M", M'", and M"" are metal atoms two or more of which may be the same, wherein X is a halide, and wherein n is an integer ranging from 4 to 6; b) then, oxidizing said polymetallic complex to form an intermediate complex; and c) then, electrochemically reducing said intermediate complex to deposit at least one of M', M", M'", and M"" onto an appropriate substrate.
References Cited (Backward Citations)
US4933003A
Cited
US5061313A
Cited
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