Pilavadi Thangamuniyandi, Krishnan Soundararajan, Loganathan Nagarajan
School of Chemistry Bharathidasan University, Tiruchirappalli 620 024 Tamilnadu India.
Department of Chemistry, Periyar Maniammai Institute of Science and Technology, Vallam-613403, Thanjavur, Tamil Nadu, India.
IUCrdata. 2024 Aug 30;9(Pt 8):x240810. doi: 10.1107/S2414314624008101. eCollection 2024 Aug.
The title compound, [Ni(CHN)(CHO)(CHN)] or [Ni(-OOCCH)(2-PyPz)(MePzH)] () [2-PyPz = 3-(pyridin-2-yl) pyrazole; MePzH = 3,5-dimethyl pyrazole] was synthesized from Ni(OOCCH)·4HO, 2-PyPzH, MePzH and tri-ethyl-amine as a base. Compound {[Ni(CHNNiO)]} at 100 K has monoclinic (2/) symmetry and the mol-ecules have crystallographic inversion symmetry. Mol-ecules of comprise an almost planar dinuclear Ni core with an NO coordination environment. The equatorial plane consists of N,O coordination derived from one of the bidentate acetate O atoms and three of the N atoms of the chelating 2-PyPz ligand while the axial positions are occupied by neutral MePzH and the second O atom of the acetate unit. The Ni atoms are bridged by the nitro-gen atom of a deprotonated 2-PyPz ligand. Compound exhibits various inter- and intra-molecular C-H⋯O and N-H⋯O hydrogen bonds.
标题化合物[Ni(CHN)(CHO)(CHN)]或[Ni(-OOCCH)(2-PyPz)(MePzH)]（）[2-PyPz = 3-(吡啶-2-基)吡唑；MePzH = 3,5-二甲基吡唑]由Ni(OOCCH)·4HO、2-PyPzH、MePzH和作为碱的三乙胺合成。化合物{[Ni(CHNNiO)]}在100 K时具有单斜（2/）对称性，分子具有晶体学反演对称性。的分子包含一个几乎平面的双核Ni核，具有NO配位环境。赤道平面由来自一个双齿乙酸根O原子和螯合2-PyPz配体的三个N原子的N,O配位组成，而轴向位置由中性MePzH和乙酸根单元的第二个O原子占据。Ni原子由去质子化的2-PyPz配体的氮原子桥连。化合物表现出各种分子间和分子内的C-H⋯O和N-H⋯O氢键。
