Isolobal | Organomettalic Chemistry | CSIR NET DEC 2026 | Lec-4 | IFAS

Isolobal | Organometallic Chemistry explained with clear concepts and exam-focused approach. Master Metal-Metal Bond and Bridging Carbonyl for CSIR NET Dec 2026 success. This session covers key concepts, PYQs, tricks, and problem-solving for quick revision and high scores. 🔥Join India's Best Coaching for CSIR NET and GATE Exams: https://ifasonline.com/csir-net/chemi... 📞 Need Guidance? Call/WhatsApp: 9172266888 ━━━━━━━━━━━━━━━━━━━━━━━━━ ⏳ Lecture Timeline: [00:00:00] – Introduction: Isolobal | Organomettalic Chemistry [00:05:17] – Homoleptic vs Heteroleptic Carbonyls [00:07:18] – Lower Nuclear Carbonyl Clusters (LNC) [00:08:44] – Formula: Total M-M Bond = (18n - TVE)/2 [00:12:21] – Trick: M-M Bond for Two Metals [00:15:33] – Trick: M-M Bond for Three Metals [00:17:16] – Trick: M-M Bond for Four Metals [00:19:26] – Example: Mn₂(CO)₁₀ M-M Bond [00:20:11] – Trick: Per Metal M-M Bond [00:24:20] – Example: Co₄(CO)₁₂ M-M & Per Metal [00:26:47] – Important: Bridging CO Trends (Fe/Ru/Os) [00:36:36] – Bridging CO: Fe₃/Ru₃/Os₃ Clusters [00:40:23] – Co₂(CO)₈: Solid vs Solution [00:44:54] – Formula: Main Group M-M Bond = (8n - TVE)/2 [00:46:44] – Square Planar: 16e M-M Bond Formula [00:48:47] – Square Planar Metals: Ir⁺¹, Pd⁺², Pt⁺², Rh⁺¹ [00:51:04] – Question 1: Find z in Ni₃Cp₃(μ₃-CO)₂ [00:56:56] – Question 2: Find 3d Metal (Cr) [01:03:16] – Question 3: Find x in CpMn(CO)ₓ [01:09:48] – Question 4: Find n in Os Complex [01:13:05] – Structure: Os Complex with H Bridges [01:16:53] – Complete Session (Isolobal | Organomettalic Chemistry) ━━━━━━━━━━━━━━━━━━━━━━━━━ 📖 Topics Covered in This Lecture: • Metal-Metal Bond Calculation: Formula & Tricks • Homoleptic & Heteroleptic Carbonyl Complexes • Bridging vs Terminal CO: Concepts & Problems • 18-Electron Rule for Transition Metal Complexes • 16-Electron Rule for Square Planar Complexes • 8-Electron Rule for Main Group Elements • Determining Unknown Quantities in Metal Complexes • Structural Analysis of Famous Carbonyl Clusters ━━━━━━━━━━━━━━━━━━━━━━━━━ 📚 Lecture Summary: In this session, IFAS Expert Faculty focuses on the core of Organometallic Chemistry required for CSIR NET. The lecture covers metal-metal bond calculations, bridging carbonyl concepts, and electron counting rules with detailed problem-solving approaches. It also demystifies the Organometallic Chemistry of famous carbonyl clusters and unknown quantity determination, providing clear concepts, formulas, and exam-focused tricks. ━━━━━━━━━━━━━━━━━━━━━━━━━ 🎓 This lecture is highly beneficial for students preparing for: ✅ CSIR NET Chemical Science ✅ GATE Chemistry ✅ SET Chemistry ✅ TIFR Chemistry ✅ BARC / DRDO / ISRO Exams ✅ PhD Entrance Exams ━━━━━━━━━━━━━━━━━━━━━━━━━ 🏆 Why IFAS is India’s No. 1 Choice for CSIR NET & GATE Chemistry? (Our Results Speak): ✅ CSIR NET Dec 2025: 4000+ Selections (AIR 3, 8, 9.....) ✅ CSIR NET June 2025: 4200+ Selections (AIR 1, 2, 6, 10...) ✅ CSIR NET Dec 2024: 4000+ Selections (AIR 5, 6, 7, 8, 9...) ✅ CSIR NET June 2024: 2000+ Selections (AIR 3, 10, 13...) ✅ CSIR NET Dec 2023: 1200+ Selections (AIR 2, 4, 5...) 📄 View IFAS Result Sheet: 👉 https://drive.google.com/file/d/1THh6... ━━━━━━━━━━━━━━━━━━━━━━━━━ 🔗 Important Links: 🌍 Visit our Website: https://ifasonline.com 📞 Contact for Queries: 9172266888 📘 Free Counselling: https://ifasonline.com/csir-net/chemi... ━━━━━━━━━━━━━━━━━━━━━━━━━ 🔗 India's Best Online Classes and Books: 🔥CSIR NET Chemical Science Live & Recorded Course: https://ifasonline.com/csir-net/chemi... 🎯 GATE Chemistry Recorded Course: https://ifasonline.com/gate/chemistry... 📘CSIR NET Chemical Science Books: https://ifasonline.com/csir-net/chemi... ━━━━━━━━━━━━━━━━━━━━━━━━━ 📲 Download IFAS App: Android: https://play.google.com/store/apps/de... IOS: https://apps.apple.com/us/app/ifas/id... ━━━━━━━━━━━━━━━━━━━━━━━━━ Stay Updated Via Other Social Media: ✔Telegram: https://t.me/NET_GATE_SET_ChemistryDi... ✔Instagram:   / csir_net_chemical_science   #organometallicchemistry #isolobal #csirnetchemicalscience #gatechemistry #csirnetchemistry #csirnetdec2026 #csirnetlecture #ifaschemistry