The Experts below are selected from a list of 207 Experts worldwide ranked by ideXlab platform
Kenzi Hori - One of the best experts on this subject based on the ideXlab platform.
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control of the superexchange interaction through diphenyl Sulfide 4 4 diyl magnetic coupler by changing the oxidation state and conformation of the sulfur atom
Journal of the American Chemical Society, 1997Co-Authors: Kenji Matsuda, Takehiro Yamagata, Tomoo Seta, Hiizu Iwamura, Kenzi HoriAbstract:The exchange interaction between two triplet carbene centers through diphenyl Sulfide 4,4‘-diyl, its sulfoxide and sulfone analogs, and thiaxanthene 2,7-diyl coupling units was studied. These dicarbenes were generated by photolysis of the corresponding bisdiazo precursors in MTHF matrices at cryogenic temperatures. From the temperature dependence of the ESR signals it was found that the dicarbene jointed through the Sulfide Group has a quintet ground state; it serves as a ferromagnetic coupler. On the other hand, as the oxidation state or the geometry of the sulfur atom was changed to sulfoxide, sulfone, and thiaxanthene Groups, antiferromagnetic interaction was observed between the two diphenylcarbene units. The magnitude of the exchange interaction J/k was determined to be 11, −30, −92, and −21 K for diphenyl Sulfide, sulfoxide, sulfone 4,4‘-diyl, and thiaxanthene 2,7-diyl couplers, respectively. In the ESR spectra of sterically unconstrained Sulfide and its analogs the isolated triplet signals were rat...
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Control of the “Superexchange” Interaction through Diphenyl Sulfide 4,4‘-Diyl Magnetic Coupler by Changing the Oxidation State and Conformation of the Sulfur Atom
Journal of the American Chemical Society, 1997Co-Authors: Kenji Matsuda, Takehiro Yamagata, Tomoo Seta, Hiizu Iwamura, Kenzi HoriAbstract:The exchange interaction between two triplet carbene centers through diphenyl Sulfide 4,4‘-diyl, its sulfoxide and sulfone analogs, and thiaxanthene 2,7-diyl coupling units was studied. These dicarbenes were generated by photolysis of the corresponding bisdiazo precursors in MTHF matrices at cryogenic temperatures. From the temperature dependence of the ESR signals it was found that the dicarbene jointed through the Sulfide Group has a quintet ground state; it serves as a ferromagnetic coupler. On the other hand, as the oxidation state or the geometry of the sulfur atom was changed to sulfoxide, sulfone, and thiaxanthene Groups, antiferromagnetic interaction was observed between the two diphenylcarbene units. The magnitude of the exchange interaction J/k was determined to be 11, −30, −92, and −21 K for diphenyl Sulfide, sulfoxide, sulfone 4,4‘-diyl, and thiaxanthene 2,7-diyl couplers, respectively. In the ESR spectra of sterically unconstrained Sulfide and its analogs the isolated triplet signals were rat...
Kenji Matsuda - One of the best experts on this subject based on the ideXlab platform.
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control of the superexchange interaction through diphenyl Sulfide 4 4 diyl magnetic coupler by changing the oxidation state and conformation of the sulfur atom
Journal of the American Chemical Society, 1997Co-Authors: Kenji Matsuda, Takehiro Yamagata, Tomoo Seta, Hiizu Iwamura, Kenzi HoriAbstract:The exchange interaction between two triplet carbene centers through diphenyl Sulfide 4,4‘-diyl, its sulfoxide and sulfone analogs, and thiaxanthene 2,7-diyl coupling units was studied. These dicarbenes were generated by photolysis of the corresponding bisdiazo precursors in MTHF matrices at cryogenic temperatures. From the temperature dependence of the ESR signals it was found that the dicarbene jointed through the Sulfide Group has a quintet ground state; it serves as a ferromagnetic coupler. On the other hand, as the oxidation state or the geometry of the sulfur atom was changed to sulfoxide, sulfone, and thiaxanthene Groups, antiferromagnetic interaction was observed between the two diphenylcarbene units. The magnitude of the exchange interaction J/k was determined to be 11, −30, −92, and −21 K for diphenyl Sulfide, sulfoxide, sulfone 4,4‘-diyl, and thiaxanthene 2,7-diyl couplers, respectively. In the ESR spectra of sterically unconstrained Sulfide and its analogs the isolated triplet signals were rat...
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Control of the “Superexchange” Interaction through Diphenyl Sulfide 4,4‘-Diyl Magnetic Coupler by Changing the Oxidation State and Conformation of the Sulfur Atom
Journal of the American Chemical Society, 1997Co-Authors: Kenji Matsuda, Takehiro Yamagata, Tomoo Seta, Hiizu Iwamura, Kenzi HoriAbstract:The exchange interaction between two triplet carbene centers through diphenyl Sulfide 4,4‘-diyl, its sulfoxide and sulfone analogs, and thiaxanthene 2,7-diyl coupling units was studied. These dicarbenes were generated by photolysis of the corresponding bisdiazo precursors in MTHF matrices at cryogenic temperatures. From the temperature dependence of the ESR signals it was found that the dicarbene jointed through the Sulfide Group has a quintet ground state; it serves as a ferromagnetic coupler. On the other hand, as the oxidation state or the geometry of the sulfur atom was changed to sulfoxide, sulfone, and thiaxanthene Groups, antiferromagnetic interaction was observed between the two diphenylcarbene units. The magnitude of the exchange interaction J/k was determined to be 11, −30, −92, and −21 K for diphenyl Sulfide, sulfoxide, sulfone 4,4‘-diyl, and thiaxanthene 2,7-diyl couplers, respectively. In the ESR spectra of sterically unconstrained Sulfide and its analogs the isolated triplet signals were rat...
Hiizu Iwamura - One of the best experts on this subject based on the ideXlab platform.
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control of the superexchange interaction through diphenyl Sulfide 4 4 diyl magnetic coupler by changing the oxidation state and conformation of the sulfur atom
Journal of the American Chemical Society, 1997Co-Authors: Kenji Matsuda, Takehiro Yamagata, Tomoo Seta, Hiizu Iwamura, Kenzi HoriAbstract:The exchange interaction between two triplet carbene centers through diphenyl Sulfide 4,4‘-diyl, its sulfoxide and sulfone analogs, and thiaxanthene 2,7-diyl coupling units was studied. These dicarbenes were generated by photolysis of the corresponding bisdiazo precursors in MTHF matrices at cryogenic temperatures. From the temperature dependence of the ESR signals it was found that the dicarbene jointed through the Sulfide Group has a quintet ground state; it serves as a ferromagnetic coupler. On the other hand, as the oxidation state or the geometry of the sulfur atom was changed to sulfoxide, sulfone, and thiaxanthene Groups, antiferromagnetic interaction was observed between the two diphenylcarbene units. The magnitude of the exchange interaction J/k was determined to be 11, −30, −92, and −21 K for diphenyl Sulfide, sulfoxide, sulfone 4,4‘-diyl, and thiaxanthene 2,7-diyl couplers, respectively. In the ESR spectra of sterically unconstrained Sulfide and its analogs the isolated triplet signals were rat...
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Control of the “Superexchange” Interaction through Diphenyl Sulfide 4,4‘-Diyl Magnetic Coupler by Changing the Oxidation State and Conformation of the Sulfur Atom
Journal of the American Chemical Society, 1997Co-Authors: Kenji Matsuda, Takehiro Yamagata, Tomoo Seta, Hiizu Iwamura, Kenzi HoriAbstract:The exchange interaction between two triplet carbene centers through diphenyl Sulfide 4,4‘-diyl, its sulfoxide and sulfone analogs, and thiaxanthene 2,7-diyl coupling units was studied. These dicarbenes were generated by photolysis of the corresponding bisdiazo precursors in MTHF matrices at cryogenic temperatures. From the temperature dependence of the ESR signals it was found that the dicarbene jointed through the Sulfide Group has a quintet ground state; it serves as a ferromagnetic coupler. On the other hand, as the oxidation state or the geometry of the sulfur atom was changed to sulfoxide, sulfone, and thiaxanthene Groups, antiferromagnetic interaction was observed between the two diphenylcarbene units. The magnitude of the exchange interaction J/k was determined to be 11, −30, −92, and −21 K for diphenyl Sulfide, sulfoxide, sulfone 4,4‘-diyl, and thiaxanthene 2,7-diyl couplers, respectively. In the ESR spectra of sterically unconstrained Sulfide and its analogs the isolated triplet signals were rat...
Tomoo Seta - One of the best experts on this subject based on the ideXlab platform.
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control of the superexchange interaction through diphenyl Sulfide 4 4 diyl magnetic coupler by changing the oxidation state and conformation of the sulfur atom
Journal of the American Chemical Society, 1997Co-Authors: Kenji Matsuda, Takehiro Yamagata, Tomoo Seta, Hiizu Iwamura, Kenzi HoriAbstract:The exchange interaction between two triplet carbene centers through diphenyl Sulfide 4,4‘-diyl, its sulfoxide and sulfone analogs, and thiaxanthene 2,7-diyl coupling units was studied. These dicarbenes were generated by photolysis of the corresponding bisdiazo precursors in MTHF matrices at cryogenic temperatures. From the temperature dependence of the ESR signals it was found that the dicarbene jointed through the Sulfide Group has a quintet ground state; it serves as a ferromagnetic coupler. On the other hand, as the oxidation state or the geometry of the sulfur atom was changed to sulfoxide, sulfone, and thiaxanthene Groups, antiferromagnetic interaction was observed between the two diphenylcarbene units. The magnitude of the exchange interaction J/k was determined to be 11, −30, −92, and −21 K for diphenyl Sulfide, sulfoxide, sulfone 4,4‘-diyl, and thiaxanthene 2,7-diyl couplers, respectively. In the ESR spectra of sterically unconstrained Sulfide and its analogs the isolated triplet signals were rat...
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Control of the “Superexchange” Interaction through Diphenyl Sulfide 4,4‘-Diyl Magnetic Coupler by Changing the Oxidation State and Conformation of the Sulfur Atom
Journal of the American Chemical Society, 1997Co-Authors: Kenji Matsuda, Takehiro Yamagata, Tomoo Seta, Hiizu Iwamura, Kenzi HoriAbstract:The exchange interaction between two triplet carbene centers through diphenyl Sulfide 4,4‘-diyl, its sulfoxide and sulfone analogs, and thiaxanthene 2,7-diyl coupling units was studied. These dicarbenes were generated by photolysis of the corresponding bisdiazo precursors in MTHF matrices at cryogenic temperatures. From the temperature dependence of the ESR signals it was found that the dicarbene jointed through the Sulfide Group has a quintet ground state; it serves as a ferromagnetic coupler. On the other hand, as the oxidation state or the geometry of the sulfur atom was changed to sulfoxide, sulfone, and thiaxanthene Groups, antiferromagnetic interaction was observed between the two diphenylcarbene units. The magnitude of the exchange interaction J/k was determined to be 11, −30, −92, and −21 K for diphenyl Sulfide, sulfoxide, sulfone 4,4‘-diyl, and thiaxanthene 2,7-diyl couplers, respectively. In the ESR spectra of sterically unconstrained Sulfide and its analogs the isolated triplet signals were rat...
Takehiro Yamagata - One of the best experts on this subject based on the ideXlab platform.
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control of the superexchange interaction through diphenyl Sulfide 4 4 diyl magnetic coupler by changing the oxidation state and conformation of the sulfur atom
Journal of the American Chemical Society, 1997Co-Authors: Kenji Matsuda, Takehiro Yamagata, Tomoo Seta, Hiizu Iwamura, Kenzi HoriAbstract:The exchange interaction between two triplet carbene centers through diphenyl Sulfide 4,4‘-diyl, its sulfoxide and sulfone analogs, and thiaxanthene 2,7-diyl coupling units was studied. These dicarbenes were generated by photolysis of the corresponding bisdiazo precursors in MTHF matrices at cryogenic temperatures. From the temperature dependence of the ESR signals it was found that the dicarbene jointed through the Sulfide Group has a quintet ground state; it serves as a ferromagnetic coupler. On the other hand, as the oxidation state or the geometry of the sulfur atom was changed to sulfoxide, sulfone, and thiaxanthene Groups, antiferromagnetic interaction was observed between the two diphenylcarbene units. The magnitude of the exchange interaction J/k was determined to be 11, −30, −92, and −21 K for diphenyl Sulfide, sulfoxide, sulfone 4,4‘-diyl, and thiaxanthene 2,7-diyl couplers, respectively. In the ESR spectra of sterically unconstrained Sulfide and its analogs the isolated triplet signals were rat...
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Control of the “Superexchange” Interaction through Diphenyl Sulfide 4,4‘-Diyl Magnetic Coupler by Changing the Oxidation State and Conformation of the Sulfur Atom
Journal of the American Chemical Society, 1997Co-Authors: Kenji Matsuda, Takehiro Yamagata, Tomoo Seta, Hiizu Iwamura, Kenzi HoriAbstract:The exchange interaction between two triplet carbene centers through diphenyl Sulfide 4,4‘-diyl, its sulfoxide and sulfone analogs, and thiaxanthene 2,7-diyl coupling units was studied. These dicarbenes were generated by photolysis of the corresponding bisdiazo precursors in MTHF matrices at cryogenic temperatures. From the temperature dependence of the ESR signals it was found that the dicarbene jointed through the Sulfide Group has a quintet ground state; it serves as a ferromagnetic coupler. On the other hand, as the oxidation state or the geometry of the sulfur atom was changed to sulfoxide, sulfone, and thiaxanthene Groups, antiferromagnetic interaction was observed between the two diphenylcarbene units. The magnitude of the exchange interaction J/k was determined to be 11, −30, −92, and −21 K for diphenyl Sulfide, sulfoxide, sulfone 4,4‘-diyl, and thiaxanthene 2,7-diyl couplers, respectively. In the ESR spectra of sterically unconstrained Sulfide and its analogs the isolated triplet signals were rat...
