A pyrazine-bridged linear pentanuclear copper(II) complex and related tri- and dinuclear complexes showing various coordination structures and magnetic couplings
摘要:
Sterically bulky pyrazines have been successfully utilized for the preparation of discrete oligo-nuclear TBP (trigonal bipyramidal), SqP (square pyramidal), and Oh (octahedral) copper(II) complexes. We have synthesized a unique linear pentanuclear complex [{Cu(hfac)(2)}(5)(mu-2-butyl-3-methylpyrazine)(4)]. The two terminal copper(II) ions have a SqP structure while the three inner ions have an Oh one. The solvent molecule was incorporated in the clearance of the lattice. From another reaction under harsh conditions, we separated [{Cu(hfac)(2)}(3)(mu-2-butyl-3-metllylpyrazine)(2)], which can be regarded as the central moiety of the pentanuclear one. We also prepared a dinuclear complex [{Cu(hfaC)(2)}(2)(mu-tetramethylpyrazine)], in which the pyrazine nitrogen atoms were located at TBP equatorial positions. Single-crystal EPR measurements supported its compressed TBP structure. The exchange coupling was antiferromagnetic with J(TBP-TBP)/k(B) = -3.6 K. The linear trinuclear [{Cu(hfac)(2)}(3)(mu-2,3,5-trimethylpyrazine)(2)], having two TBP Cu ions with an intervening Oh Cu ion, showed very weak antiferromagnetic coupling. DFT calculations on these compounds indicated that the sigma-type orbital overlap between the Cu and N atoms is essential for superexchange interactions. (C) 2008 Elsevier Ltd. All rights reserved.
Derivatives of 4-piperazin-1-yl-4-benzo[b]thiophene suitable for the treatment of cns disorders
申请人:Yamashita Hiroshi
公开号:US20090264404A1
公开(公告)日:2009-10-22
A heterocyclic compound or a salt thereof represented by the formula (1): where R
2
represents a hydrogen atom or a lower alkyl group; A represents a lower alkylene group or lower alkenylene group; and R
1
represents an aromatic group or a heterocyclic group. The compound of the present invention has a wide treatment spectrum for mental disorders including central nervous system disorders, no side effects and high safety.
DERIVATIVES OF 4-PIPERAZIN-1-YL-4-BENZO[B]THIOPHENE SUITABLE FOR THE TREATMENT OF CNS DISORDERS
申请人:YAMASHITA Hiroshi
公开号:US20120028920A1
公开(公告)日:2012-02-02
A heterocyclic compound or a salt thereof represented by the formula (1):
where R
2
represents a hydrogen atom or a lower alkyl group;
A represents a lower alkylene group or lower alkenylene group; and
R
1
represents an aromatic group or a heterocyclic group. The compound of the present invention has a wide treatment spectrum for mental disorders including central nervous system disorders, no side effects and high safety.
RESIN COMPOSITION, LAMINATE, RESIN COMPOSITION LAYER-ATTACHED SEMICONDUCTOR WAFER, SUBSTRATE FOR MOUNTING RESIN COMPOSITION LAYER-ATTACHED SEMICONDUCTOR, AND SEMICONDUCTOR DEVICE
申请人:MITSUBISHI GAS CHEMICAL COMPANY, INC.
公开号:EP3786200A1
公开(公告)日:2021-03-03
A resin composition that has excellent flux activity, flexibility and storage stability and that is suitable for a pre-applied underfill material is provided. The resin composition of the present invention contains a compound (A) having a phenolic hydroxy group, a metal ion trapping agent (B) and a radical polymerizable compound (C).
Devices, systems and methods for delivering coffee-derived volatiles
申请人:Moll Neto Jorge Neval
公开号:US10688275B2
公开(公告)日:2020-06-23
Devices, systems and methods are provided for delivering coffee-derived volatiles to a user, particularly for the treatment of addiction. The coffee volatiles are selected and delivered by devices and systems which allow for concentrated delivery to the olfactory system of the user in a controlled manner. The olfactory system is the part of the sensory system used for smelling or olfaction. Olfaction of such coffee volatiles in this prescribed fashion stimulates the reward system of the brain such that a specific desired outcome is achieved. In some embodiments, the desired outcome is a reduction in addiction symptoms or curbing of a sensation of addiction withdrawal.
申请人:Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V.
公开号:US10913710B2
公开(公告)日:2021-02-09
The present invention relates to novel substituted benzene disulfonamides, as well as pharmaceutical compositions containing at least one of these substituted benzene disulfonamides together with at least one pharmaceutically acceptable carrier, excipient and/or diluent. Said substituted benzene disulfonamides are binding to the prenyl binding pocket of PDE6δ and therefore, are useful for the prophylaxis and treatment of cancer by inhibition of the binding of PDE6δ to farnesylated Ras proteins and thereby, inhibition of oncogenic Ras signaling in cells.