Synthesis and Characterization of Mono and Dinuclear Coordination Compounds of Nickel and Copper with 2,2'-Bipyrazine and 2,2'-Dipyridylamine Ligands

الموضوعات

علوم تطبيقية وتكنولوجية

الملخص

The crystal structure of [Cu(bpz)(OH)(ClO4)(H2O)]2.H2O(1), [Cu(dipyam)]2(ClO4)2 (2)and[Ni(bpz)3](ClO4)2 .H2O(3)have been synthesized and characterized by SingleCrystal X-ray diffractionanalysis(SCXRD),FTIR, UV-Vis spectroscopy and Thermal analysisby Differential Scanning Calorimetry(DSC). The 2,2'-bipyrazine ligand(bpz) hasbeensynthesized andcharacterized byFTIR, UV-Visspectroscopyand Single Crystal X-ray diffraction (SCXRD).The crystal of a new binuclear(1)are triclinic, with a = 7.9796(5), b = 8.0290(5), c= 10.5550(7)Å, α = 77.7120(1)°, β = 79.9150(1)°, γ = 84.7840(1)°, Z=1 and V= 649.526 A°3.The structure consists of discrete centrosymmetric di-μ-hydroxo-copper(II)dimer with 2,2'-bipyrazine as outer ligand and coordinated ClO4-anions and H2O solvent molecule. Intramolecular copper-copper distances is 2.824 Åand Cu–O–Cu angle 94.40° exhibiting ferromagnetic interactionwith smallest Cu–O–Cu angle and shortestCu....Cu distancereported so far. The coordination geometry around each copper ion is distorted elongated tetragonal octahedralwith the bridging hydroxo groups and two nitrogen atoms of the 2,2'-bipyrazine ligand comprising the basal plane, and the apical site occupied by two oxygen atom of the ClO4-and H2O groups.The packing structure shows the rings of the polypyrizyl ligands are interact through π----πinteractions.The DSC curve shows endothermic peaks at 272.45°C owing tomelting point.The compound (2), (dipyam = 2,2′-dipyridylamine) has beensynthesized and the crystal structure determined by a singleX-ray diffraction study, FTIR, UV-Vis spectroscopy ,and thermal analysis(DSC).The Cu(II) center is four-coordinated by the nitrogen donors of the pyridine rings of the ligand, 2,2′-dipyridylamine,by trans-trans mode.A distorted tetrahedral coordination geometry around copper ion.The crystal type monoclinic, with Space groupC2/cand the unit cell dimensions a = 9.416 (3), b = 12.955 (4), c= 19.748 (6)Å, α = 90.00°, β = 103.47°, γ = 90.00°, Z= 4and V= 2339.5 (11)A°3.The perchlorate anions link the complex cations to form a chain structure through C-H···O close contacts and N-H···O hydrogen bonds.The DSC curve shows endothermic peakat 308.65°C related to melting point.The novelmononuclear Ni(II) complex(3), where (bpz =2,2'-bipyrazine). X-ray structural analysesshows that the coordination geometry around the Ni(II) center is a ivtrigonaldistorted octahedral, and the crystal typemonoclinic, with Space groupP 21/cand the unit cell dimensions a = 17.2943(11), b = 9.8622(6), c= 17.9612(11)Å, α = 90.00°, β = 107.7010(1)°, γ = 90.00°, Z= 4and V= 2918.4(3)(11)A°3.A careful inspection of the packing patternin the lattice of complex(3)reveals the occurrence of C–H----π, C–H···N–Chydrogen bondsinteractions. The packing structure also showsthat the rings of the polypyrizyl ligands are interact through π----πinteractionsin two setsbetween bpz ligands in complex(3)with parallel displaced form interaction.TheDSC curve shows endothermic peakat 334.15°C related to melting point.

روابط وملفات

التعريف والنوع

رقم الوثيقة

09deed74-3409-4bd7-8e15-34d06014b48c

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

1696468_1.pdf

بيانات النشر

ترجمة العنوان

تحضير وتشخيص مركبات تناسقية احادية وثنائية النواة من النيكل ,(II) النحاس(II) مع 2,2'-bipyrazine ligand و 2,2?-Dipyridylamine

ألقاب المؤلفين

[{"name_ar":"حسين علقم","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"خالد عادل نائل","title_ar":"اعداد","title_en":"Preparation"}]

اللغة

English

المصدر والدورية

اسم المصدر

Synthesis and Characterization of Mono and Dinuclear Coordination Compounds of Nickel and Copper with 2,2'-Bipyrazine and 2,2'-Dipyridylamine Ligands

المحتوى والصفحات

عدد الصفحات

0

إشراف وإعداد

الإشراف

حسين علقم

الإعداد

خالد عادل نائل

الاقتباسات الببليوغرافية