Crystal engineering of the nbo metal-organic framework (MOF) platform MOF-505 with a custom-designed azamacrocycle ligand (1,4,7,10-tetrazazcyclododecane-N,N',N'',N'''-tetra-p-methylbenzoic acid) leads to a high density of well-oriented Lewis active sites within the cuboctahedral cage in MMCF-2, [Cu2(Cu-tactmb)(H2O)3(NO3)2]. This MOF demonstrates high catalytic activity for the chemical fixation of CO2 into cyclic carbonates at room temperature under 1 atm pressure.

No abstract

Crystal engineering of the nbo metal–organic framework (MOF) platform MOF‐505 with a custom‐designed azamacrocycle ligand (1,4,7,10‐tetrazazcyclododecane‐N,N′,N′′,N′′′‐tetra‐p‐methylbenzoic acid) leads to a high density of well‐oriented Lewis active sites within the cuboctahedral cage in MMCF‐2, [Cu2(Cu‐tactmb)(H2O)3(NO3)2]. This MOF demonstrates high catalytic activity for the chemical fixation of CO2 into cyclic carbonates at room temperature under 1 atm pressure.

Two rare indium-based porous metal-metalloporphyrin frameworks (MMPFs), MMPF-7 and MMPF-8, were constructed by self-assembly of In(III) and two custom-designed porphyrintetracarboxylate ligands. MMPF-7 and MMPF-8 possess the pts topology and exhibit interesting CO 2 adsorption properties.

No abstract

A series of prototypal metal-organic frameworks (MOFs) consisting of polyhedral cages with accessible Lewis-acid sites, have been systematically investigated for Friedländer annulation reaction, a straightforward approach to synthesizing quinoline and its derivatives. Amongst them MMCF-2 demonstrates significantly enhanced catalytic activity compared with the benchmark MOFs, HKUST-1 and MOF-505, as a result of a high-density of accessible Cu(II) Lewis acid sites and large window size in the cuboctahedral cage-based nanoreactor of MMCF-2.

zinc caused wines containing 25 mg. per liter of SO, to become turbid; but copper, lead, and nickel did not cause clouding when wines contained up to 450 mg. of SO, per liter. Searle, La Que, and Dohrow (1934) added various quantities of the citrate salts of aluminum, chromium, copper, iron, nickel, tin, and zinc t o win@ made from labrusca grapes grown in Canada and then observed them periodically for changes in taste and appearance. Small amounts of tin and iron caused turbidity, whereas even large quantities of nickel and zinc did not cause any perceptible changes. Copper and aluminum caused sIight changes in appearance, and chromium tended to cause the 'Now chemist for 3. Ribari & Sam, h e . Winery, Madrone, Calif.

Since the repeal of prohibition and subsequent revival of the wine industry, many different metals and alloys have been included in winery equipment used in contact with musts and wines. Relatively little information exists on the behavior of these metals when subjected to various conditions existing at different stages of wine making. Searle, La Que, and Dohrow (1934) conducted an extensive series of corrosion tests in an eastern winery. The grapes and methods used in the wine industry of eastern North America, however, are very different from those used in California, so their data cannot be applied to the California wine industry. In order to obtain corrosion data under California conditions, tests were conducted with 46 metals and alloys in three California wineries. EXPERIMENTAL PROCEDUREThe methods used were similar to those employed by Searle, La Que, and Dohrow. Tests were conducted in two wineries located at Lodi where large wineries predominate and one in the Livermore valley where the wineries are smaller and devoted to the production of dry wines. Crusher, sump, and fermenter tests were conducted in the Livermore winery and in one Lodi winery. All other tests were conducted in one or both of the Lodi wineries.The metals tested were similar to those commonly used or suggested for use in winery equipment. A n attempt was made to select metals representing as wide a range of properties as possible. In all instances test pieces were cut to a surface area of approximately four square inches, determined accurately for each piece by the use of micrometer calipers. Some of the stainless steels were cut and then welded together in order to determine the effect of welding on the resistance to corrosion. A list of metals used and their approximate compositions are given (Table 1).The test conditions were those actually existing iii the wineries. As the conditions in any particular operation usually varied during a given test period, an effort was made to obtain an accurate log of the changes during each period. This information was often difficult to Chemist, Pacific Brass Foundry of San Francisco. 439