Section 1: Product Identification Chemical Name: 1,5-Bis(di-t-butylphosphino)pentane, min. 97% CAS Registry Number: 65420-68-0 Formula: (C4H9)2P(CH2)5P(C4H9)2 EINECS Number: none Chemical Family: organophosphine ligand Synonym: 1,5-Bis-di-tert-butylphosphanyl-pentane Section 2: Composition and Information on Ingredients Ingredient CAS Number Percent ACGIH (TWA) OSHA (PEL) Title compound 65420-68-0 100% no data no data Section 3: Hazards Identification Emergency Overview: Irritating to skin, eyes and respiratory tract. Primary Routes of Exposure: Ingestion, inhalation, skin, eyes Eye Contact: Causes irritation to eyes Skin Contact: Causes irritation to skin Inhalation: Irritating to the nose, mucous membranes and respiratory tract. Ingestion: No information available on the physiological effects of ingestion. May be harmful if swallowed. Acute Health Affects: Irritating to skin, eyes and respiratory tract. Chronic Health Affects: No information on long-term chronic effects. NTP: No IARC: No OSHA: No SECTION 4: First Aid Measures Immediately flush the eyes with copious amounts of water for at least 10-15 minutes. A victim may need Eye Exposure: assistance in keeping their eye lids open. Get immediate medical attention. Wash the affected area with water. Remove contaminated clothes if necessary. Seek medical assistance if Skin Exposure: irritation persists. Remove the victim to fresh air. Closely monitor the victim for signs of respiratory problems, such as difficulty Inhalation: in breathing, coughing, wheezing, or pain. In such cases seek immediate medical assistance. Seek medical attention immediately. Keep the victim calm. Give the victim water (only if conscious). Induce Ingestion: vomiting only if directed by medical personnel. SECTION 5: Fire Fighting Measures Flash Point: none Autoignition Temperature: none Explosion Limits: none Extinguishing Medium: carbon dioxide, dry powder or foam If this product is involved in a fire, fire fighters should be equipped with a NIOSH approved positive pressure Special Fire Fighting Procedures: self-contained breathing apparatus and full protective clothing. Hazardous Combustion and If involved in a fire this material may emit irritating fumes. Decomposion Products: Unusual Fire or Explosion Hazards: No unususal fire or explosion hazards. SECTION 6: Accidental Release Measures Spill and Leak Procedures: Small spills can be mixed with vermiculite or sodium carbonate and swept up. SECTION 7: Handling and Storage Handling and Storage: Store in a tightly sealed container. Keep in a cool, dry, well ventilated place. SECTION 8: Exposure Controls and Personal Protection Eye Protection: Always wear approved safety glasses when handling a chemical substance in the laboratory. Skin Protection: Wear protective clothing and gloves. Ventilation: Handle the material in an efficient fume hood. If ventilation is not available a respirator should be worn. The use of respirators requires a Respirator Respirator: Protection Program to be in compliance with 29 CFR 1910.134. Ventilation: Handle the material in an efficient fume hood. Additional Protection: No additional protection required. SECTION 9: Physical and Chemical Properties Color and Form: colorless, viscous liquid Molecular Weight: 360.54 Melting Point: no data Boiling Point: no data Vapor Pressure: no data Specific Gravity: no data Odor: not determined Solubility in Water: insoluble SECTION 10: Stability and Reactivity Stability: air sensitive Hazardous Polymerization: no hazardous polymerization Conditions to Avoid: none Incompatibility: oxidizing agents, halogens Decomposition Products: carbon monoxide, carbon dioxide, phosphorus pentoxide, organic fumes SECTION 11: Toxicological Information RTECS Data: No information available in the RTECS files. Carcinogenic Effects: no data Mutagenic Effects: no data Tetratogenic Effects: no data SECTION 12: Ecological Information Ecological Information: No information available SECTION 13: Disposal Considerations Disposal: Dispose of according to local, state and federal regulations. SECTION 14: Transportation Shipping Name (CFR): Non-hazardous Hazard Class (CFR): NA Additional Hazard Class (CFR): NA Packaging Group (CFR): NA UN ID Number (CFR): NA Shipping Name (IATA): Non-hazardous Hazard Class (IATA): NA Additional Hazard Class (IATA): NA Packaging Group (IATA): NA UN ID Number (IATA): NA SECTION 15: Regulatory Information TSCA: Not listed in the TSCA inventory SARA (Title 313): Title compound not listed Second Ingredient: none
Isolation and X-ray structures of four Rh(PCP) complexes including a Rh(I) dioxygen complex with a short O–O bond
摘要:
The reaction of RhCl3 center dot H2O with (Bu2P)-Bu-t(CH2)(5)(PBu2)-Bu-t afforded several complexes including [Rh-III(H)Cl{(Bu2P)-Bu-t(CH2)(2)CH(CH2)(2)(PBu2)-Bu-t}] (1). [(RhHCl2)-H-III{(Bu2P)-Bu-t(CH2)(5)(PBu2)-Bu-t}](2) (2), [(RhCl)-Cl-I{(Bu2P)-Bu-t(CH2)(2)CH=(CHCH2PBu2)-Bu-t}] (3) and [(RhCl)-Cl-I{(Bu2PCH2C)-Bu-t(O)CH=(CHCH2PBu2)-Bu-t}] (4). X-ray crystal structures of 3 and 4 showed that the C=C bond on the C-5 unit of (Bu2P)-Bu-t(CH2)(5)(PBu2)-Bu-t is bound to Rh(I) in a eta(2) configuration. In 4, the Rh atom has a trigonal pyramidal coordination geometry. The X-ray crystal structure of 2 consists of two rhodium(III) centers bridged by two (Bu2P)-Bu-t(CH2)(5)(PBu2)-Bu-t ligands with two phosphorus atoms, one from each ligand, trans to one another. The crystal structure of the rhodium oxygen adduct with 1,3-bis(di-t-butyl-phosphinomethyl)benzene [RhO2{(Bu2PCH2)-Bu-t(C6H3)(CH2Bu2P)-Bu-t}] (5) was also investigated. In this species the O-2 is eta(2) coordinated to the Rh(l) center with asymmetric Rh-O bond lengths (2.087(7) and 1.998(8) angstrom). The O-O bond distance is short (1.337(11) angstrom) with v(o-o) of 990.5 cm(-1). DFT calculations on complex 5 yielded two eta(2)-O-2 structures that differed in energy by only 0.76 kcal/mol. The lower energy one (5a) had near C-2 symmetry, and had nearly equal Rh-O bond lengths, while the higher energy structure (5b) had near C-s symmetry and generally good agreement with the experimental structure. The calculated UV-Vis and IR spectra of complex 5 are in excellent agreement with experiment. (C) 2012 Elsevier Ltd. All rights reserved.
DYE, PHOTOELECTRIC CONVERSION ELEMENT USING THE SAME, PHOTOELECTROCHEMICAL CELL, AND METHOD OF PRODUCING DYE
申请人:Kobayashi Katsumi
公开号:US20110213144A1
公开(公告)日:2011-09-01
A dye, having a structure represented by formula (1A):
wherein A represents a group of atoms necessary for forming a ring together with the carbon-nitrogen bond; at least one of Y
1A
and Y
2A
represents an acidic group, in which when they each represent an acidic group, they may be the same as or different from each other, or when only one of them represents an acidic group, the other represents an electron-withdrawing group; D represents a group to give a dye; n represents an integer of 1 or greater; L represents a single bond or a divalent linking group; and Y
3A
represents an acidic group.
Less common modes of coordination in α,ω-bis(di-tert-butylphosphino)alkane and α,ω-bis(di-tert-butylphosphino) (poly)ether complexes of rhodium(I)
作者:Klaas Timmer、D. Harry M. W. Thewissen、Jan W. Marsman
DOI:10.1002/recl.19881070327
日期:——
α,ω-Bis(di-tert-butylphosphino)alkane and α,ω-bis(di-tert-butylphosphino) (poly)ether ligands are prepared in appreciable yields via reaction of the appropriate dihalide with two equivalents of Lip-t-Bu2. Reaction of [Rh(COD)(acetone)2][OTf] with the former ligands yields bridged complexes of the type [Rh(COD)(OTf)]2[μ-t-Bu2P(CH2)n,P-t-Bu2] (n = 5 and 8), containing coordinated triflate. With the ligand
The present disclosure provides processes for the preparation of a compound of formula:
which is useful as an antiviral agent. The disclosure also provides compounds that are synthetic intermediates.
Formation of large chelate rings and cyclometallated products from diphosphines of type Bu<sup>t</sup><sub>2</sub>P(CH<sub>2</sub>)<sub>n</sub>PBu<sup>t</sup><sub>2</sub>(n= 5–8) and Ph<sub>2</sub>P(CH<sub>2</sub>)<sub>5</sub>PPh<sub>2</sub>with palladium and platinum chlorides: factors affecting the stability and conformation of large chelate rings
作者:Najeeb A. Al-Salem、H. David Empsall、Richard Markham、Bernard L. Shaw、Brian Weeks
DOI:10.1039/dt9790001972
日期:——
31P n.m.r. spectroscopy the large-chelate mixed compounds described in this and previous papers, containing PBut2 groups in ‘corner’ positions, are shown to be stable in solution relative to open-chain structures. The complexes trans-[Pd2Cl4Ph2P(CH2)5PPh2}2] and cis-[Pt2Cl4Ph2P(CH2)5PPh2}2] are described. The literature on large-chelate-ring compounds is surveyed. Factors affecting the stability and
Syntheses and Reactivities of New PC<sub>s</sub><sub>p3</sub>P Pincer Complexes of Nickel
作者:Annie Castonguay、Christine Sui-Seng、Davit Zargarian、André L. Beauchamp
DOI:10.1021/om050844x
日期:2006.1.1
toward olefins, but react with PhSiH3 to give (PhSiH)n. The cationic complex 4 is also inert toward most olefins, but its reaction with excess acrylonitrile results in displacement of coordinated acetonitrile to give [(But2P(CH2)2)2CH}Ni(N⋮CCHCH2)][BPh4], 5. Complexes 1−5 have been characterized by NMR spectroscopy and, in the case of 1, 4, and 5, by X-ray crystallography.
将Ni(II)卤化物与1当量的Bu t 2 P(CH 2)5 PBu t 2加热,得到PC sp3 P钳形配合物[(Bu t 2 P(CH 2)2)2 CH} NiX](X = Cl,1a; Br,1b; I,1c)。这些化合物分别与MeMgCl或n- BuLi反应生成甲基Bu t 2 P(CH 2)2)2 CH} NiMe 2或氢化物Bu t 2P(CH 2)2)2 CH} NiH,3,同时与NaBPh 4在苯/乙腈的混合物中反应,得到阳离子物质[(Bu t 2 P(CH 2)2)2 CH} Ni(N⋮ CCH 3)] [BPh 4 ],4。配合物1 - 3是惰性朝向烯烃,但随着反应PhSiH 3,得到(PhSiH)ñ。阳离子络合物4对大多数烯烃也是惰性的,但它与过量的丙烯腈反应导致取代的乙腈生成[(Bu t 2 P(CH 2)2)2 CH} Ni(N⋮CCH CH 2)]