[NiL<sub>2</sub>(NCS) <sub>2</sub>]•H<sub>2</sub>O (1) and [NiL<sub>2</sub>(NCS) <sub>2</sub>] (2) (L = N, N′-diethyl-1, 2-ethanediamine) have been synthesized from solution. The species 1 on deaquation transforms to [NiL<sub>2</sub>(NCS) <sub>2</sub>] (1a) which subsequently undergoes an irreversible exothermic phase transition (118–142°C; ΔH = −3.8kJ mol<sup>−1</sup>) accompanied by a pinkish-blue to blue thermochromism producing an isomer [NiL<sub>2</sub>(NCS) <sub>2</sub>] (1b). The pinkish-blue species 2 on heating shows an endotherm (82–120°C; ΔH = kJ mol<sup>−1</sup>) yielding the species 1b. Single crystal X-ray structure analyses of 1 and 2 have been carried out. The metal atoms in both the complexes, lying at crystallogr...
Complexes [NiL2]X2•nH2O (L = diethylenetriamine; n = O when X = CF3CO2 or CCl2CO2; n = 1 when X = Cl...
[NiL3]X2•2H2O (X is Cl−, Br− and ClO−4; L is N-propylethane-1,2-diamine), [NiL2(H2O)2](ClO4)2, [NiL2...
The violet-coloured compound [NiII(opda)2(NCS)2] (1) undergoes colour change to straw-yellow colour ...
The complex [Ni(MeNHCH2CH2NHMe) 2 (NCS) 2] (1) has been synthesised and characterised by X-ray cryst...
[NiL<sub>3</sub>]C<sub>4</sub>O<sub>4</sub> [L = 1,2-ethanediamine (en) and 1,2-N,N′-dimethylethaned...
Reactions of nickel(II) salts with substituted ethane-1,2-diamine where one of the amine nitrogens i...
Reactions of nickel(II) salts with substituted ethane-1,2-diamine where one of the amine nitrogens i...
Complexes [NiL2(H2O)X]X•nH2O (L = N,N-dimethyl-1,2-ethanediamine; n = 0 when X = BF4; n = 1 when X =...
Two isomers, (1) and (1a), of [NiL<sub>2</sub>(NCS) <sub>2</sub>](L = N-methylpropane-1,3-diamine) h...
Two isomers, (1) and (1a), of [NiL<sub>2</sub>(NCS) <sub>2</sub>](L = N-methylpropane-1,3-diamine) h...
[NiL3]X2H2O(L = Nmethyl-1,2-ethanediamine; X− = Cl− and Br−), [NiL3]X2 (X− = NO3− and BF4−) and [NiL...
[NiL2X2] (L = N,N′-dimethyl-1,2-ethanediamine; X = Cl−, CF3CO2−, CC13CO2− and CBr3CO2−), [NiL2C2O4] ...
The octahedral cis and trans isomers of [NiL<sub>2</sub>(NO<sub>3</sub>)<sub>2</sub>]•nH<sub>2</sub>...
The 1:1 condensation of N-methyl-1,3-diaminopropane and N,N-diethyl-1,2-diminoethane with 2-acetylpy...
The complexes [NiL<sub>3</sub>](NO<sub>2</sub>)<sub>2</sub>•2H<sub>2</sub>O (violet, 1) and cis-[NiL...
Complexes [NiL2]X2•nH2O (L = diethylenetriamine; n = O when X = CF3CO2 or CCl2CO2; n = 1 when X = Cl...
[NiL3]X2•2H2O (X is Cl−, Br− and ClO−4; L is N-propylethane-1,2-diamine), [NiL2(H2O)2](ClO4)2, [NiL2...
The violet-coloured compound [NiII(opda)2(NCS)2] (1) undergoes colour change to straw-yellow colour ...
The complex [Ni(MeNHCH2CH2NHMe) 2 (NCS) 2] (1) has been synthesised and characterised by X-ray cryst...
[NiL<sub>3</sub>]C<sub>4</sub>O<sub>4</sub> [L = 1,2-ethanediamine (en) and 1,2-N,N′-dimethylethaned...
Reactions of nickel(II) salts with substituted ethane-1,2-diamine where one of the amine nitrogens i...
Reactions of nickel(II) salts with substituted ethane-1,2-diamine where one of the amine nitrogens i...
Complexes [NiL2(H2O)X]X•nH2O (L = N,N-dimethyl-1,2-ethanediamine; n = 0 when X = BF4; n = 1 when X =...
Two isomers, (1) and (1a), of [NiL<sub>2</sub>(NCS) <sub>2</sub>](L = N-methylpropane-1,3-diamine) h...
Two isomers, (1) and (1a), of [NiL<sub>2</sub>(NCS) <sub>2</sub>](L = N-methylpropane-1,3-diamine) h...
[NiL3]X2H2O(L = Nmethyl-1,2-ethanediamine; X− = Cl− and Br−), [NiL3]X2 (X− = NO3− and BF4−) and [NiL...
[NiL2X2] (L = N,N′-dimethyl-1,2-ethanediamine; X = Cl−, CF3CO2−, CC13CO2− and CBr3CO2−), [NiL2C2O4] ...
The octahedral cis and trans isomers of [NiL<sub>2</sub>(NO<sub>3</sub>)<sub>2</sub>]•nH<sub>2</sub>...
The 1:1 condensation of N-methyl-1,3-diaminopropane and N,N-diethyl-1,2-diminoethane with 2-acetylpy...
The complexes [NiL<sub>3</sub>](NO<sub>2</sub>)<sub>2</sub>•2H<sub>2</sub>O (violet, 1) and cis-[NiL...
Complexes [NiL2]X2•nH2O (L = diethylenetriamine; n = O when X = CF3CO2 or CCl2CO2; n = 1 when X = Cl...
[NiL3]X2•2H2O (X is Cl−, Br− and ClO−4; L is N-propylethane-1,2-diamine), [NiL2(H2O)2](ClO4)2, [NiL2...
The violet-coloured compound [NiII(opda)2(NCS)2] (1) undergoes colour change to straw-yellow colour ...