Chromium chains as polydentate fluoride ligands for lanthanides.
نویسندگان
چکیده
Hexametallic chromium(III) chains can act as fluoride donor ligands to lanthanide ions giving {(Cr(6))Ln(x)}(n) complexes; preliminary spectroscopic studies are reported.
منابع مشابه
cis-Difluoridobis(1,10-phenanthroline)chromium(III) perchlorate monohydrate
The title complex, [CrF(2)(C(12)H(8)N(2))(2)]ClO(4)·H(2)O, displays a slightly distorted octa-hedral coordination geometry around the central chromium(III) ion. The Cr environment is composed of a cis arrangement of two 1,10-phenanthroline [average Cr(III)-N = 2.0726 (10) Å] and two fluoride [average Cr(III)-F = 1.8533 (6) Å] ligands. The water molecule forms a hydrogen bond to fluorine in a ne...
متن کاملبررسی کارایی نانوذرات آلومینای اصلاح شده با لیگاند شیفباز در حذف کروم شش ظرفیتی از محلول آبی در شرایط اسیدی
Background: The heavy metals are the most important pollutants their concentration of which in the environment is increasing in connection with cities and industrials development. One of these metals is chromium which, in the trivalent and Hexavalent oxidation state, is used in industries such as electroplating, glass, ceramic, tannery and leather. Hexavalent Chromium has proven several healt...
متن کاملFully fluorinated imidodiphosphinate shells for visible- and NIR-emitting lanthanides: hitherto unexpected effects of sensitizer fluorination on lanthanide emission properties.
In this paper we demonstrate that the effect of aromatic C--F substitution in ligands does not always abide by conventional wisdom for ligand design to enhance sensitisation for visible lanthanide emission, in contrast with NIR emission for which the same effect coupled with shell formation leads to unprecedented long luminescence lifetimes. We have chosen an imidodiphosphinate ligand, N-{P,P-d...
متن کاملHeterometallic rings made from chromium stick together easily.
The idea that coordination complexes could be used in quantum information processing (QIP) was introduced by Leuenberger and Loss, and later developed by them and others. Our contribution has been to look at the S= =2 ground state {Cr7Ni} anti-ferromagnetically coupled rings, [4,5] including measuring spin coherence times. For QIP to work there is a need to link such rings into more sophisticat...
متن کاملIonic liquid mediated routes to polydentate oxygen-donor adducts of cerium(III) bromide.
The preparation of a series of CeBr(3) molecular adducts supported by the polydentate oxygen donor ligands diglyme, dimethoxyethane and tetraglyme is reported. The new complexes are characterized structurally by X-ray diffraction and optically by photoluminescence studies.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Chemical communications
دوره 47 22 شماره
صفحات -
تاریخ انتشار 2011