Proton chemical shift values Sample Clauses

Proton chemical shift values. (ppm) for the complex [{Ru(apy)(tpy)}2{µ-H2N(CH2)6NH2}](ClO4)4 (1g) taken in DMSO-d6 at 298 K. The proton labels are indicated in Fig.4.2. 6A 3A 3T 3T´ 4A 5A 4T´ 4T 6A´ 4A´ 5T 5A´ 6T 3A´ NH2 (CH2)a (CH2)b (CH2)c 9.34 9.00 8.62 8.52 8.30 8.14 7.78 7.73 7.46 7.30 6.98 4.92 1.64 1.10 0.66 Interaction between ruthenium polypyridyl complexes and 9-ethylguanine A previous 1H NMR study of the interaction between each of the complexes 1a-c ([Ru(apy)(tpy)L2](2-n)+, where L = Cl-, H2O and CH3CN, respectively) and 9-EtGua42 was described in chapter 3. This study proved that these three complexes are capable of binding to the DNA model base in water at 310 K and pH = 7, albeit to a limited extent and with different kinetics in each case. Carrying out a kinetic study of these reactions was only possible for complexes 1b and 1c, while the low water-solubility of complex 1a allowed only for qualitative observations to be made. This previous study analyzed the influence of the respective leaving ligands (Cl-, H2O and CH3CN) on the reaction rate of each complex with 9-ethylguanine. In the present study a possible relationship between structure and activity is sought. For this purpose, a whole series of related compounds, which have different didentate ligands, as well as a dinuclear analogue, are taken into account. The above-mentioned 1H NMR study was carried out involving 9-ethylguanine and the complexes [Ru(azpy)(tpy)Cl]+ (1e) and [Ru(impy)(tpy)Cl]+ (1f), respectively. The hydrolysis of these complexes in the same experimental conditions and absence of the DNA model base was also followed by 1H NMR. Comparison of the spectra indicated that both compounds 1e and 1f undergo two reactions, as it had previously been reported for the case of 1c.42 The major reaction is hydrolysis. Each complex also reacts with 9-EtGua to form a ruthenium-model base adduct. The reaction between 1e and 9-EtGua is estimated to reach its maximum in about 2 hours, with an approximate conversion of 25%, while the complex 1f yields as much as a 60% conversion, in a longer reaction that proceeds for about 9 hours (see Fig.4.3 and Table 4.2). The maximum conversions observed in the cases of complexes 1b and 1c were reported to be 20% in 5 hours and 30% in 18 hours, respectively.42 H8(free 9-EtGua) H8(free 9-EtGua) H8(1e-model-base adduct) 6A(1e-model-base adduct) H8(1f-model-base adduct) 6A(1f-model-base adduct) 6A(hydrated 1f) 6A(hydrated 1e) 6A(1e) 6A(1f)
Sample 1Sample 2Sample 3
AutoNDA by SimpleDocs

Related to Proton chemical shift values

  • Target Population The Grantee shall ensure that diversion programs and services provided under this grant are designed to serve juvenile offenders who are at risk of commitment to Department.

  • Transfer and Seniority Outside Bargaining Unit No employee shall be transferred to a position outside the bargaining unit without his consent. If an employee is transferred to a position outside of the bargaining unit, he shall retain his seniority accumulated up to the date of leaving the unit, but will not accumulate any further seniority. If such an employee returns to the bargaining unit within twelve (12) months, he shall be placed in a job consistent with his seniority. Such return shall not result in the layoff or bumping of an employee holding greater seniority.

  • Evaluation Cycle: Annual Orientation A) At the start of each school year, the superintendent, principal or designee shall conduct a meeting for Educators and Evaluators focused substantially on educator evaluation. The superintendent, principal or designee shall:

  • C1 Contract Price C1.1 In consideration of the Contractor’s performance of its obligations under the Contract, the Authority shall pay the Contract Price in accordance with clause C2 (Payment and VAT).

  • Unbundled Channelization (Multiplexing) 5.7.1 To the extent NewPhone is purchasing DS1 or DS3 or STS-1 Dedicated Transport pursuant to this Agreement, Unbundled Channelization (UC) provides the optional multiplexing capability that will allow a DS1 (1.544 Mbps) or DS3 (44.736 Mbps) or STS-1 (51.84 Mbps) Network Elements to be multiplexed or channelized at a BellSouth central office. Channelization can be accomplished through the use of a multiplexer or a digital cross-connect system at the discretion of BellSouth. Once UC has been installed, NewPhone may request channel activation on a channelized facility and BellSouth shall connect the requested facilities via COCIs. The COCI must be compatible with the lower capacity facility and ordered with the lower capacity facility. This service is available as defined in NECA 4.

  • SUB-CONTRACTING 31.1. The Authority approves the appointment of the sub-contractors specified in Schedule 10 (Approved Sub-contractors) in respect of the obligations specified in that Schedule.

  • Transfers and Seniority Outside Bargaining Unit No employee shall be transferred to a position outside the bargaining unit without the employee's consent. If an employee is transferred to a position outside of the bargaining unit, the employee shall retain seniority acquired at the date of leaving the unit, but will not accumulate any further seniority. If such an employee later returns to the bargaining unit, the employee shall be placed in a job consistent with the employee's seniority. Such return shall not result in the layoff or bumping of an employee holding greater seniority.

  • Transfer and Seniority Outside the Bargaining Unit (a) It is understood that an employee shall not be transferred by the Hospital to a position outside the bargaining unit without his consent except in the case of temporary assignments not exceeding six (6) months. Such employees on temporary assignments shall remain members of the bargaining unit.

  • Earned Value Management System ‌ An earned value management system (EVMS) means a project management tool that effectively integrates the project scope of work with cost, schedule and performance elements for optimum project planning and control. The qualities and operating characteristics of EVMS are described in American National Standards Institute /Electronics Industries Alliance (ANSI/EIA) Standard-748. An EVMS is not mandatory; however, Contractors are encouraged to have an EVMS ANSI/EIA Standard-748 during the entire term of OASIS. The Contractor shall notify the OASIS CO, in writing, if there are any changes in the status of their EVMS and provide the reasons for the change and copies of audits by the Defense Contract Management Agency (DCMA) or other cognizant Government administration office, as applicable. If only part of a Contractor’s organization is EVMS ANSI/EIA Standard-748 certified, the Contractor shall make the distinction between which business units or sites and geographic locations have been certified.

  • List of Operator’s Subprocessors [Box 26] [Box 27] [Box 28] [Box 29]

Time is Money Join Law Insider Premium to draft better contracts faster.