A feasibility study on Introducing the Reference Fuel(Gasoline) for Testing Vehicles in South Korea

Synthesis of Macrocyclic Nickel(II) Complexes Bearing N,N‐Disubstituted Amidine Pendant Arms: Metal‐induced CN Bond Cleavage of the Amidine Group Involving a 14‐Membered Tetraaza Macrocycle

“…A DMSO solution (20 mL) of [NiL 1 ](ClO 4 ) 2 (2.0 g, 3.0 mmol) 15 and diethylamine (0.9 mL, 9.0 mmol) was stirred at room temperature for 30 min. During the reaction, the orange-red solution turned purple.…”

“…10 This trend is in contrast to those reported for most other related trans octahedral macrocyclic nickel(II) complexes bearing axially coordinated functional pendant arms, such as N CH 2 CONH 2 , N CH 2 CH 2 NH 2 , N CH 2 −C( NH) OCH 3 , and N CH 2 CH 2 OH. [15][16][17][18] The relatively short axial Ni(1)−N distances of [NiL 2 ](ClO 4 ) 2 and [NiL 4 ](ClO 4 ) 2 indicates the strong coordination ability of the amidine groups. 10 The C(20)−N(5) distance (1.34 (2) Å) is significantly longer than the C N (1.287 (5) The bond distances and angles (Table 3) of cation 2 are comparable to those of cation 1.…”